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Generalbent, deformed or strange habits of crystals

1st Jan 2014 02:53 GMTTony Charlton

0428023001388447697.jpg
while looking at the best minerals- Tourmaline I noticed a couple of bent crystals. have always had an affection for this type of specimens.so thought to try a new string for the new year..... odd balls of the mineral world. if you have a bent, deformed or unusual crystal - lets see it.

to start this thread I have selected the strangest Quartz I have seen.

think it is a good example of a cubic habit. it is fully terminated and only damage is a small chip on one edge.




click on photo for more views

1st Jan 2014 12:01 GMTMaggie Wilson Expert

0918687001354906105.jpg
Hi Tony - Happy New Year!


My contribution for today - a brookite that from the front appears not too bad, but from the side, you can see where it was once broken and then rehealed.


Locality: Kharan, Balochistan (Baluchistan), Pakistan

Dimensions: 3 cm x 2 cm x 0.5 cm

1st Jan 2014 13:39 GMTDavid Baldwin

0027242001357559281.jpg
Here's my contribution. A self-collected baryte crystal from a septarian nodule. The crystal has been cracked during formation by further expansion of the nodule, which pulls the interior apart, and then self-repaired as it continued to grow.


1st Jan 2014 15:14 GMTReiner Mielke Expert

Here is a galena crystal I found back in the 1960's http://www.mindat.org/photo-299466.html

1st Jan 2014 15:17 GMTBob Harman

Aragonite crystal cluster, 3.5 cm, with a 1.0 cm "cloud" of tiny quartz crystals all on quartz and ferroan dolomite from an Indiana geode. CHEERS……BOB

1st Jan 2014 16:05 GMTAnonymous User

This may only qualify as out of the ordinary for me, but here is a 2.9 x 2.4 x 3.3 cm gem clear quartz crystal that I found several years ago from Missouri Ridge in Chaffee County Colorado that was broken and rehealed making for a somewhat unusual termination.

http://www.pbase.com/bjorn_b/image/153695506/original.jpg

1st Jan 2014 16:07 GMTAdam Berluti

A beryl 'worm' in smoky quartz matrix. Many of the beryls I found from this pegmatite are rehealed in quartz matrix, making them impossible to remove in one piece. Collected Sept of 2013. Size of specimen is 3cm x 2cm.


Happy New Year!

1st Jan 2014 16:24 GMTOlav Revheim Manager

0508776001251143727.jpg
One of my favourite garnets, self collected from the Steli Quarry, Iveland, Norway. It is 3 cm x 3 cm x 3 mm in sixe. It's composition is intermediate between almandine and spessartine, with a slightly higher almandine component




Olav

1st Jan 2014 20:47 GMTDean Allum Expert

Tony,

This is a fun and interesting topic. Crystals are not supposed to be curved. It is difficult to have symmetry that way.


All the lavender 'tourmalines' on this lepidolite pseudomorph are curved, giving them the appearance of tree branches



Several intergrown cyrtolites appear bloated with their curved surfaces.




-Dean Allum

1st Jan 2014 22:14 GMTChris Rayburn

Here are two different views of a bent smoky quartz crystal on fluorite that I found near Lake George, Colorado several years ago. The smoky is approximately 11.5 cm long.

1st Jan 2014 23:17 GMTTony Charlton

to all:)-D

great looking oddities!!(tu):-D


Maggie, does the small crystal on the front of your Brookite show any damage?


David, the deformed termination on your Quartz looks like something blocked the growth, possible a penetration twin (minus the penetrated part).could you post different angle pictures?


here is another odd Quartz that resembles a sky-scraper with a rhomboidal cross section and four split levals.the base shows a twinning scar, otherwise a perfect crystal
more views available>

.

2nd Jan 2014 00:46 GMTDaniel Levesque




Happy New Year Tony,


Here's my contribution to your 'bent' thread. This is a 40mm schorl I collected in 2009 from the Maine Feldspar Quarry, Mt. Apatite, Auburn, Maine.

2nd Jan 2014 01:49 GMTGlenn Rhein

A broken and rehealed Magnesiohastingsite crystal 3.75 cm

2nd Jan 2014 02:01 GMTMaggie Wilson Expert

Hey... The smaller crystal does not have damage where it intersects the main crystal. I assume, therefore it grew after the healing.

2nd Jan 2014 02:45 GMTDoug Daniels

So, the healing properties of crystals are real???? (sorry, couldn't resist)

2nd Jan 2014 03:03 GMTAnonymous User

Some terrific specimens!


Here are a top down and up through the polished bottom view of the one I posted above. It does look like the growth was blocked with a possible penetration twin. I hadn't previously noticed the neat parallel silver metallic thread inclusions seen in the bottom view through about 3cm of quartz. Looks like another one I need to add to my need to ID list.

http://www.pbase.com/bjorn_b/image/153988811/original.jpg

http://www.pbase.com/bjorn_b/image/153988813/original.jpg

2nd Jan 2014 12:25 GMTTony Charlton

Hey all,:)-D

Thanks for the wonderful samples. This is the most oddities that i have seen.(tu):-D(tu)


I have to wonder if a misaligned atom or molecule. in the first stage of the crystals growth, could pass the deformation along throughout the whole growth. Thus causing a crystal like Maggie's Brookite with an apparent break, that has an undamaged crystal across the deformation.


to Doug--- there are a lot of properties that can be scientifically proven---piezoelectric phosphorescence,....ect. So all I can say is " crystal heal thy self ";-)
PS I am not a mete crystal mambo jumbo type.

3rd Jan 2014 13:28 GMTTony Charlton

Found this in a faulted Paleozoic volcanic ash (the central sierra nevada crest, Ebbits pass area) . The crystallization only accrued on one side of the broken pieces of the seam. They appeared to grow from the upper surfaces, hanging into the voids .


The Crystals were very fragile and none made it back home, although this one did get to my truck.

The reason this one is in the string --- it was the only one that looked like a palm tree in a hurricane The others of its type were all needle tips or grew into the adjoining rock on their terminations, It was about 1.5 cm tall.

Have no ideal as to the identity of the crystal(s).


this pic. shows the typical crystals and their orientation within the seam. the chunks of ash are still attached to each other in this pic.

(they were removed from the seam and set on a nearby boulder and the pic was rotated 90 degrees.)

3rd Jan 2014 16:25 GMTGerhard Niklasch Expert

0039193001094418757.jpg
Copyright © Peter Haas
This image is copyrighted. Unauthorized reproduction prohibited.
Watch out kids - this is what continental drift'll do to you when you're in the wrong place at the right time:





The curving, partially fractured and healed main crystal is about 85mm long.

(This specimen came into my collection in 2010, some years after the above picture had been taken and uploaded.)


Enjoy,

Gerhard

3rd Jan 2014 17:16 GMTGrzegorz Słowik

This is my favourite:


Quartzine, Chalcedony and Quartz from Barros Cassal, Rio Grande do Sul, Brazil, 73 mm.
http://www.mindat.org/photos/0960373001376045853.jpg

and this:

schorl from DSS Piława Górna, Dolny Śląsk, Poland, crystal size: 35 mm
http://www.mindat.org/photos/0767990001373217835.jpg

3rd Jan 2014 19:16 GMTPaul Pohwat

In reference to the term rehealed - should we not be using healed instead? Rehealed implies that the crystal was broken twice.

3rd Jan 2014 20:50 GMTStephen Rose Expert

Quartz from the CK Claim (aka Happy Claim), Bottomly Prospect area, North Trinity Range, Pershing County, Nevada. curved crystal 3.4x1x1 cm.




Cheers!


Steve

3rd Jan 2014 22:42 GMTMichael Otto

This smoky quartz I collected always struck me as strange and deformed as were several that came out of the same pocket.

4th Jan 2014 00:35 GMTMickey Marks

Here is a curved quartz from Altoona, Washington. It would be about 9mm long if straightened.

4th Jan 2014 01:49 GMTDan Fountain

Not bent, but definitely a strange habit. Schorl (or some other black tourmaline - blacker than the photo looks...) 35 mm long overall. Ex Harry Dryer specimen, origin unknown. Not sure if there was once another crystal growing from the pit or ???

4th Jan 2014 03:20 GMTWayne Corwin

Dan


Thats a contact mark, from quartz or garnet i suppect.

4th Jan 2014 08:34 GMTPierre Rondelez

Hi all:


here !s my contribution: want to talk about bent?

This is really bent (curled) : Malachite fibrous crystals from the Clara mine, Oberwolfach, Germany.

FOV: 2 cm.

Self collected in 1999.

Photo P.Rondelez

4th Jan 2014 10:19 GMTGrzegorz Słowik

Dan Fountain Wrote:

-------------------------------------------------------

> Not bent, but definitely a strange habit. Schorl

> (or some other black tourmaline - blacker than the

> photo looks...) 35 mm long overall. Ex Harry

> Dryer specimen, origin unknown. Not sure if there

> was once another crystal growing from the pit or

> ???

>



I agree with Wayne. In that place was garnet.

4th Jan 2014 15:13 GMTTony Charlton

to All :)-D and (tu)(tu)(tu)

realy loving the response to this thread!


Michael-- could you post a side view or two?


the hole in Dan's Tourmaline has 8 sided symmetry and probably was not Quartz. could be Garnite or another tourmaline?


Pierre--- could the Malachite be psyedomorphed after Silver?

4th Jan 2014 15:25 GMTMaggie Wilson Expert

some subtly bending fluorapatite from the Keeley-Frontier Mine, Silver Centre, near Cobalt, Ontario

4th Jan 2014 16:45 GMTMario Pauwels

09285520015054811802028.jpg
A curved 'Blue cap' Tourmaline from the Sapo Mine (13,7cm x 2,8cm).





Best regards,

Mario Pauwels

4th Jan 2014 19:58 GMTRonald J. Pellar Expert

Here is a twisted realgar from china (realgar gwindel?)

5th Jan 2014 14:17 GMTMichael Otto

Tony Charlton Wrote:

-------------------------------------------------------

> to All :)-D and (tu)(tu)(tu)

> realy loving the response to this thread!

>

> Michael-- could you post a side view or two?

>

> the hole in Dan's Tourmaline has 8 sided symmetry

> and probably is not Quartz. could be Garnite or

> another tourmaline?

>

> Pierre--- could the Malachite be psyedomorphed

> after Silver?








Tony, First pic is from the back of crystal(s) 2nd is from side and last another odd 9cm crystal from the same pocket with a similar look.

5th Jan 2014 17:52 GMTRui Nunes Expert

A tourmaline from Pirineus claim, MG, Brazil

6th Jan 2014 04:33 GMTDr. Paul Bordovsky

Great Sapo Bluecap, Mario........and interesting bends in your Brazilian tourmaline, Rui.


Here is a bent elbaite from Pech, Afghanistan.

6th Jan 2014 07:19 GMTAM Mizunaka Expert

0497632001388992186.jpg
Bent quartz crystal from Brazil. 10.5 x 10.4 cm.



High Resolution Version Bent Quartz


Etched quartz from Brazil. 15.1 x 3.3 cm.



High Resolution Version Etched Quartz

6th Jan 2014 13:52 GMTKarel Bal

0862240001368012838.jpg
Curved faden quartz from Dara Ismael Khan District, Pakistan. 143 x 63 x 46mm. / minID: 9RW-1J5

6th Jan 2014 14:12 GMTKarel Bal

0837288001356874006.jpg
Rehealed, bent elbaite crystal of 121mm. long from Stak Nala, Gilgit-Baltistan, Pakistan. 121 x 41 x 31mm. / minID: TV5-RC1

6th Jan 2014 14:21 GMTKarel Bal

0515545001355579432.jpg
This epidote cluster is bent into two different directions due to tectonic movements during the growth stage of the crystals. Alchuri Alpine Vein, Gilgit-Baltistan, Pakistan.

97 x 35 x 14mm. / minID: UFN-5RN

6th Jan 2014 14:29 GMTKarel Bal

0159408001352907682.jpg
Deformed, slightly curved, doubly terminated faden quartz crystal to 85mm. in length from the Zard Mtn, Kharan District, Pakistan. 148 x 69 x 47mm. / minID: TK2-H0D

6th Jan 2014 14:44 GMTKarel Bal

0622948001347810295.jpg
Curved, doubly terminated quartz crystal to 70mm. with moss-like inclusions of chlorite from the Zard Mtn, Kharan District, Pakistan. 92 x 78 x 55mm. / minID: 8QG-ELT

6th Jan 2014 14:55 GMTKarel Bal

0361549001327931027.jpg
Well-formed "ram's horn" selenite cluster, formed by thin curved, parallel crystals. This kind of formation occurs when one side of the crystal grows more rapidly than the other.

Touissit, Oujda-Angad Prov., Morocco. 112 x 119 x 77mm. / minID: JHD-3PD

6th Jan 2014 15:00 GMTKarel Bal

0136407001349092945.jpg
Curved, elongated actinolite crystals embedded in talc matrix from the Altermark talc mine, Rana, Norway. 143 x 82 x 62mm. / minID: YX2-KAH

6th Jan 2014 15:11 GMTKarel Bal

0593099001378815284.jpg
Intergrown, doubly terminated, curved faden quartz cluster from the quartz outcrops close to the village of Alnif. Izizauen, Alnif, Er Rachidia Prov., Morocco. 111 x 37 x 31mm. / minID: 5HG-T9C

6th Jan 2014 15:42 GMTKarel Bal

0942124001351695713.jpg
A fluorite pseudomorph after scalenohedral calcite with very nice scepter quartz crystals to 10mm. in length. Carmen Mine, West Camp, Santa Eulalia District, Mexico. 165 x 102 x 67mm. / minID: EV3-ELL


6th Jan 2014 16:00 GMTKarel Bal

0389638001331311790.jpg
Etched biterminated quartz crystal with cleavelandite, shows a surface pattern with dents and grooves. Shigar Valley, Skardu District, Pakistan. 80 x 30 x 28mm. / minID: ETQ-X9T

6th Jan 2014 18:36 GMTGrzegorz Słowik

Two more specimens from me:


Unusual Herkimer Diamond from Hekimer Co. NY, 15 mm ( http://www.mindat.org/photo-550634.html ):
http://www.mindat.org/photos/0434519001375477563.jpg
http://www.mindat.org/photos/0493507001375477697.jpg


Very unusual single crystal of quartz from Strzegom, Dolny Śląsk, Poland. Crystal is also complete and undamaged. Dimensions: 27 mm x 22 mm x 6 mm ( http://www.mindat.org/photo-581525.html )
http://www.mindat.org/photos/0311610001387904451.jpg
http://www.mindat.org/photos/0912317001387904600.jpg

7th Jan 2014 22:35 GMTTony Charlton

0312979001389130442.jpg
HEY ALL :)-D

really nice pieces being posted,


Maggie -- do the other Fuorapatite crystals in the specimen show deformations. if so do they alligne with the main bent one?


Mario --beautiful tourmaline!


Ronald --wonderful realgar!


Micheal --thanks for extra pic's.


Rui --outrageous double bend!!


Paul --another wonderful tourmaline!!


AM --that is the largest angle bend I have seen, wow!!!


Karel --must have taken a while to put such a good collections together! very nice!!!


Grzegorz --nice Quartz, neat unusual habits.


again thanks to all contributors. loving it!!!



here is My latest contribution to the thread.

this is a Quartz that shows two growth interruptions created by other types of minerals.

.


check out the child pics.

7th Jan 2014 23:51 GMTMickey Marks

Gypsum "flower" from the Ute Mountain Indian Reservation, Mancos Canyon , Colorado. Collected in September 1990.

8th Jan 2014 01:36 GMTClifford Trebilcock

08617040015658959398204.jpg
Here is a photo of some interesting Quartz crystals I found at Hermit Island in Phippsburg,Maine near my home.

Hexagonal plates on stems in some spots. Specimen FOV is about 3 CM. I managed to get a few samples

from this seam but have never found any others.




Cliff

8th Jan 2014 07:23 GMTHarjo Neutkens Manager

0236076001308249097.jpg
"bent, deformed, strange"......you talking 'bout me? ;-)


A particularly nice bent quartz crystal, 10cm tall. From pocket I found in 2010 in Belgium.


8th Jan 2014 10:26 GMTRock Currier Expert

Will someone please step forward and create a Best Minerals article entitled bent crystals?

8th Jan 2014 11:46 GMTMaggie Wilson Expert

Hi Tony


To answer your question, "Do the other Fluorapatite crystals in the specimen show deformations? If so do they align with the main bent one?"


Sort of... How's that for scientific?


I know longer have the piece but have some photos - Here's another view -

8th Jan 2014 14:24 GMTTony Charlton

0178712001389188724.jpg
HEY ALL(tu):)-D

They are all looking GREAT


Mickey --looks like a shadow puppet.


Clifford --strange one for sure.


Harjo --do they have tornado's there?:-D


Maggie --that is to bad, it is a nice piece.


another bent Quartz --not as bent as some previous post but it is what I have.

8th Jan 2014 22:36 GMTNorbert Fuchs

Hallo,


von mir ein interessantes Stück aus Deutschland.

Fluorit-Oktaeder mit gekrümmten Flächen. Deutsche Sammler nennen diese Varietät des Fluorits "Ochsenaugen".


Der genaue Fundort ist Schönbrunn,Vogtland ,Sachsen.

9th Jan 2014 05:08 GMTMarc Miterman (2)

HI Everyone,

What a cool topic.

I love odd and etched crystals and it is refreshing to see everyone's weird specimens.

It is amazing to see what nature can create.

Some are so different

you just have to love them.

Here is a strange a and severely curved Schorl crystal I have had in my collection for many years.

It has a very pronounced curve and is complete all around and terminated.


Tourmaline var Schorl

Shigar Valley

Skardu District

Baltistan

Gilgit-Baltistan

Pakistan

10 cm x 1.4 cm

9th Jan 2014 08:20 GMTAnonymous User

Awesome thread!!!

9th Jan 2014 18:49 GMTMickey Marks

This is a curved lepidolite "stack" from the Strickland Quarry in Portland, Connecticut, which was collected in 1985, before the site was closed.

10th Jan 2014 14:33 GMTKarel Bal

0787602001331230913.jpg
Hey guys, it's cool to see so many interest for such a topic, therefore I will add some more pictures.


A treelike aggregate of white curved strontianite crystals surrounded by calcite crystals.

Readymix quarry, Beckum, Münsterland, Germany. 118 x 83 x 66mm. / minID: FA8-2M0


10th Jan 2014 14:55 GMTKarel Bal

0746598001389281183.jpg
A well-terminated spray of metallic long prismatic stibnite crystals, showing interesting curvatures.

Xikuangshan Sb deposit, Hunan Prov., China. 130 x 50 x 35mm. / minID: 03J-2X1




FOV: 40 x 25 mm.

10th Jan 2014 15:10 GMTKarel Bal

0002087001352280449.jpg
An unusual combination of fluorite with curved "ram's horn" selenite crystals inside.

Hamman-Zriba Mine, Zaghouan Gov. Tunisia. 132 x 83 x 80mm. / minID: GL1-DXT

10th Jan 2014 15:23 GMTKarel Bal

0667849001333204832.jpg
Bizarre-looking milky quartz specimen, partially coated with chlorite from the Kuhlenberg quarry, Winterberg, Sauerland, Germany. 100 x 50 x 22mm. / minID: YKE-RUV

10th Jan 2014 15:34 GMTKarel Bal

0145672001333373148.jpg
Aragonite needles up to 17mm. with black-brownish, featherlike todorokite crystals. Maria Alm, Saalfelden, Austria. 107 x 46 x 41mm. / minID: 2WD-8KV

10th Jan 2014 15:48 GMTKarel Bal

0481521001354374050.jpg
Bizarre looking glassy chalcedony pseudostalactites on a botryoidal pink-yellow matrix. Sidi Rahal, Marrakech-Tensift-El Haouz Reg., Morocco. 139 x 89 x 39mm. / minID: RW1-153

10th Jan 2014 16:02 GMTKarel Bal

0297232001347097677.jpg
A curved, doubly terminated green elbaite crystal of 70mm. atop on a matrix of cleavelandite. Stak Nala, Gilgit-Baltistan, Pakistan. 97 x 80 x 55mm. / minID: WP0-TER

10th Jan 2014 16:13 GMTKarel Bal

0513543001333552212.jpg
A lustrous, Alpine smoky quartz crystal with adularia. Lower Weid Alp, Habach valley, Austria. 120 x 62 x 30mm. / minID: 3DR-JYW

10th Jan 2014 16:30 GMTKarel Bal

0003869001389279391.jpg
A slightly curved quartz crystal of 40mm. with hübnerite. Mundo Nuevo, Sanchez Carrion Prov., Peru. 110 x 76 x 50mm. / minID: DCP-UK6

10th Jan 2014 16:46 GMTKarel Bal

0734194001329500857.jpg
Broken and (re) healed scepter amethyst crystal of 8mm. from Osilo, Sassari Prov. Italy. 105 x 82 x 70mm. / minID: QPY-MG1

10th Jan 2014 17:00 GMTKarel Bal

0113550001347958186.jpg
A showy dark green epidote crystal of 32mm. with numerous smaller at the base. Alchuri Alpine Vein, Gilgit-Baltistan, Pakistan. 52 x 32 x 26mm. / minID: RFC-LM4

10th Jan 2014 17:20 GMTKarel Bal

0931607001350564102.jpg
A very nicely fossilized sponge that has been totally replaced by elongated, sometimes curved pyrite crystals. Cap Blanc-Nez, Nord-Pas-de-Calais, France. 70 x 59 x 56mm. / minID: 0WG-UCH







That's all Folks !!!

10th Jan 2014 18:35 GMTStephanie Martin

Karel, that thing is amazing!


Cool thread with more than a few curves!


regards,

stephanie :-)

10th Jan 2014 19:36 GMTTony Charlton

To ALL--- great pics!!!!


Here is another growth interruption example.

a 2.54 cm Quartz. the termination was covered with chlorite and the only area that continued to grow was along 3 edges of the termination.

this formed a "wall" along those edges. does not show well but the "wall" has a lot of terminations.





this crystal has a complete termination with no chips.

11th Jan 2014 12:45 GMTTony Charlton

This post is of crystals that are not in My collection , but they fit the string so well.

The subjects of the post are in a Marble cavern next to an old (for California) gold rush mine town called Valcainoville. The Black Chasm cavern is a small hole that was opened as a "park" about 10 years ago. It was first explored by the 1849 miners, but they did not get past the "chasm" . In the late 1990's the property was acquired by the state, and a stair was installed.

fov 3 meters
fov 5 meters
fov 4 meters

11th Jan 2014 13:01 GMTTony Charlton

Some more Helectites from the Black Chasm caverns. The guides claim that this cave has more Helectites than any other known cavern. Some of them are half a meter long!
fov t2b aprox. 3 meters
close-up of "the dragon"
different view shows "the dragon" is several crystals.


I do not know if it is the most helectites in a cave, but there are a lot of them in this cavern. Some walls in the cave are covered with the helectites for 15 meters!

11th Jan 2014 13:05 GMTTony Charlton

One more of the Black Chasm.


Just so You know that the cave is watching You while Your there!:-D

17th Jan 2014 19:22 GMTTony Charlton

Hey All :)-D

So far there have been a lot of wonderful specimens (tu) posted, please keep them coming.

Here is another bent Quartz from My collection. ( except for the Helectites all of the crystals that I have shown here are self collected..)


28th Jan 2014 00:06 GMTTony Charlton

Hello again folks,:)-D

I can not believe this is all the mindat community has--please, lets see some more of the bent, deformed or strange habits.

Here is My new post of a bent Quartz, size is about 3 cm. long.




I think this is a Faden Quartz, but am not sure.

.

28th Jan 2014 02:51 GMTMickey Marks

This is a bent tourmaline, var. dravite, from Codfish Hill in Bethel, Connecticut, collected in the 1970s.

28th Jan 2014 12:30 GMTNorman King Expert

0336943001390912082.jpg
This specimen just came in and I photographed it a few days ago. It looks like the muscovite formed on the spodumene crystal, weighing it down and causing it to sag. (I know–we don’t know what orientation it had when forming, but it’s a cute story!)


28th Jan 2014 20:30 GMTEd Clopton Expert




The upper crystal is a string of parallel-growth calcite crystals 6.5 cm long from Charcas, San Luis Potosi, Mexico with a shorter similar string crossing one end at an angle. I believe the lower crystal is diopside from Bancroft, Ontario, Canada, tectonically disrupted along parting planes. It was labeled as apatite, which it clearly isn't, was represented as being unrepaired, which it was, and uncoated (to improve luster), which it also was--but it's a neat specimen all the same.


Here is a quartz crystal 11.6 cm tall from Galileia, Minas Gerais, Brazil. Despite being odd-looking, it is complete with the usual faces all around: six prism faces (two very wide and four very narrow), and six rhombohedron faces on each termination. Point of attachment is along the left side in the upper photo.

29th Jan 2014 01:06 GMTMartin Rich Expert

0961048001356295504.jpg
Pyrite has isometric systeme (m3), so kubes are the most comon shape. I collected some years ago a very elongated crystal. This one has a length of 12 mm and a diameter of 0.1 mm; this is a ratio of 120:1!


4th Feb 2014 20:48 GMTTony Charlton

Hey All, :)-D

Those are some great deformities!!!!

This is My next post for this string....
A bent Rutile crystal 0.7 cm long.

The color is shifted to the blue side, it is really black.

5th Feb 2014 11:02 GMTKarel Bal

Tony,


Cool topic !!! (tu)

Thanks for sharing the nice photos, keep them coming.


Regards,

Karel :)-D

6th Feb 2014 23:17 GMTTony Charlton

(tu) to All the posts, there are truly neat deformed crystals being shown and I love it!!!:-D

Please keep them coming !!!

Here is another strangel habit Quartz from My collection...




There is only one s/r--face on the termination, all the other faces are x/z (?) faces.
Notice the angle of the top of the m faces, along the edge with the termination.

7th Feb 2014 19:17 GMTMatt Ciranni

^^your Millerites look like cordless drill bits. If the hardness was sufficient, I would almost wonder if they could be used for that(?) Very interesting specimen. I cant recall any mineral that forms spiralling crystals, unless you consider asbestos fibers.

10th Feb 2014 00:53 GMTAM Mizunaka Expert

0554363001391992913.jpg
Unusual tub shaped amethyst crystal. 12.2 x 9.0 cm. India.



10th Feb 2014 08:14 GMTBoris Erjavc

Hi, I sure like good: curved, bent or strange habit crystals.


Heulandite, Maharashtra, India.


Calcite, Vodole Tunnel, Maribor, Slovenija.


Windshieldite(Ice).

10th Feb 2014 19:55 GMTMatt Ciranni

har har, Windshieldite...my least favorate mineral this time of year. I was late to work today because of it.

17th Feb 2014 15:36 GMTTony Charlton

To all the "Bent, Deformed and Strange": followers. :)-D

To the posts (tu) :-D < keep them coming please>

Here is an Anatase on Quartz that is not bent but does fit the other two,





This crystal also has some Hematite crystal plates included in the 1 cm.Quartz. crystal.

It was found on Big X mountain, El Dorado co., California.

17th Feb 2014 16:54 GMTJyrki Autio

0399007001391946095.jpg
Rhombic (spiraling?) growth layers in pyrite.

17th Feb 2014 21:54 GMTMickey Marks

Some call this "nail-head" calcite. It could also be called "alligator skin" calcite. It was collected at the "new" Route 25 road-cut in Trumbull, CT in 1977, and measures approx. 7.5 cm long. Also shown is a closeup view.

18th Feb 2014 01:04 GMTVolkmar Stingl

A gypsum capricorn seen at the Changsha Show last year.


Volkmar

18th Feb 2014 01:09 GMTVolkmar Stingl

A fossilized woman? :-D Also from the Changsha Show.

18th Feb 2014 09:11 GMTVolkmar Stingl

A strange amethyst stalactite from Brazil...




...and weird malachite stalactites from Congo.

23rd Feb 2014 20:12 GMTMatt Ciranni

Does anyone else like flattened Gatorade-colored quartz?

Eh, me neither, but this guy's actually grown on me since I picked him up near the Nevada/California border a few summers ago.


At the local rock and gem show yesterday they had these pretty cool flat quartz crystals like this, I didn't get a picture of them but they were called, um I forget the term actually, but they were strange looking. They were not greenish yellow, though.

3rd Mar 2014 14:26 GMTTony Charlton

Hey all :)-D


Jerki-- Is the bulging side appearance of the Pyrite natural or camera distortion ? Neat calcite!


Volkmar-- UM- ya;-)


Matt-- I do like the unusual shaped crystals. Can we see side or back view? ( Quite often the rocks that were found near the surface in the eastern sierra's have a moss / algae surface coating that can infiltrate the cracks in the Quartz crystals. This will often give them a "green / yellow " color. )


Having trouble getting good pics of the bends I want to show, but will post some more later.


Please keep showing the great oddities of the mineral world!

3rd Mar 2014 22:51 GMTKenO James

I found this at The Beryl Pit in Quadeville Ontario. The schorl is 3cm long.

3rd Mar 2014 23:36 GMTTony Charlton

0079392001393888110.jpg
Hey again Folks :)-D


Ken--

That is a nice Schorl.


Here is my latest entry.


see child photos for a better view of the bend.

4th Mar 2014 23:44 GMTGlenn Rhein

A lot of bent and deformed stuff here in Amity including my broken pinky finger.




4th Mar 2014 23:59 GMTMatt Ciranni

ouch! looks painful.


What type of crystals are those? corundum, or apatite?

5th Mar 2014 11:36 GMTGlenn Rhein

Matt



I wish they were corundum but they are Apatite

5th Mar 2014 19:52 GMTWayne Corwin

Glenn


Maybe your finger would be safer in a museum :-D

8th Mar 2014 15:51 GMTDana Morong

There is an article "Curvature in Crystals" by L. J. Spencer, in Mineralogical Magazine, December 1921, in volume 19, pages 263-274. This I found I can locate by an internet search using the title in quotes, and the author's last name, and the name of the journal, and year. It is in pdf format. It is an interesting article and has some illustrations at the end of it.

8th Mar 2014 17:45 GMTOlav Revheim Manager

I have bookmarked the archive of Mineralogical Magazine in my webbrowser. Here is the link link. That may be an even easier way to find this article, either by looking up the article in the archive directly or by using the search option at the bottom.


There is a wealth of interesting stuff in this archive!


Olav

8th Mar 2014 21:44 GMTDennis McCoy

Thanks for the link Olav.

9th Mar 2014 00:38 GMTJake Harper Expert

Ditto - thank you for the link! Found many very interesting articles in no time at all.

10th Mar 2014 16:20 GMTKarel Bal

0184771001394371566.jpg
Hey guys some new ones:


Two specimens of highly lustrous, curved books of baryte crystals, completely pseudomorph by calcite. From a new find that was done in Jan.2014 at the Precaución Mine, Cartagena, Spain. 105 x 82 x 57 mm. / 90 x 80 x 55 mm.





*********************************************************************************************************************************************************************************************************

10th Mar 2014 16:46 GMTKarel Bal

0519802001394370318.jpg
This specimen doesn't has a bent, deformed shape or strange habit, but I want to show it to you.

From the Kamariza Mines, Lavrion, Greece, an unusual specimen of a goethite perimorph after gypsum. A long prismatic gypsum crystal has been coated by goethite and minor gypsum and then completely dissolved, leaving behind the hollow shape of the original crystal. 125 x 31 x 22 mm.


11th Mar 2014 03:21 GMTLawrie Berthelsen (2)

Great topics folks, it is one dear to my heart -


Bent Quartz, 57.3 mm, location unknown



Bent Kyanite, 47 mm, self-found, Entia Valley, Harts Range, Northern Territory, Australia



Bent Epidote, variety Arendalite, 111.4 mm, Entia Valley, Harts Range, Northern Territory, Australia



Cheers, Lawrie.

11th Mar 2014 03:26 GMTLawrie Berthelsen (2)

And a few more.....


Bent Tourmaline, location unknown



Bent Stibnite, Hillgrove Mine, Hillgrove, New South Wales, Australia



Bent Diopside, Pakistan

11th Mar 2014 08:26 GMTKarel Bal

Lawrie,


Very nice specimens, thanks for sharing them! (tu)


Regards,

Karel

11th Mar 2014 13:19 GMTMichel Ambroise

Dan Fountain écrivait:

-------------------------------------------------------

> Not bent, but definitely a strange habit. Schorl

> (or some other black tourmaline - blacker than the

> photo looks...) 35 mm long overall. Ex Harry

> Dryer specimen, origin unknown. Not sure if there

> was once another crystal growing from the pit or

> ???

>



Quartz

13th Mar 2014 21:23 GMTTony Charlton

0883997001394744621.jpg
Hey all- :)-D

There are some truly awesome crystals shown here, thanks to all that have contributed.(tu)

Here is another bent Quartz-


15th Mar 2014 23:17 GMTReiner Mielke Expert

Bent strontianite crystals. Anyone have any idea why this happens? you get bent ones mixed in with unbent ones.

16th Mar 2014 02:09 GMTTony Charlton

Reiner :)-D ,

Cool bends on those.

I believe the bends can be caused by a miss alignment of the molecules during the crystals growth. The crystals that You posted seem to be a good example of this. There are other ways that crystals can be deformed as well.

16th Mar 2014 05:42 GMTJake Harper Expert

Lawrie, Your self collected kyanite and Harts Range epidote are really something! Thanks for sharing.


Jake

27th Mar 2014 13:57 GMTTony Charlton

This is not a bent crystal, but I think it is a strange habit for a.....



Quartz.

good digging to all.

27th Mar 2014 17:43 GMTTony Charlton

Hey All :)-D

Here is a bent ( broken and healed ) Quartz crystal (7 cm) that a friend asked me to post. It was found in the area of Goergetown, El Dorado co., California





It is a full termination tabular that has several stress fractures in it, otherwise a very nice crystal.

8th Apr 2014 01:23 BSTTony Charlton

0361886001396912217.jpg
To all that have contributed to this thread, THANK YOU!

I am really enjoying all the odd specimens that are being shown! Hope that y'all are too!

Here is another contribution from Me.

The mane crystal is a nice little smokey Quartz with a smaller crystal on the side.

The smaller crystal has some inclusions of Hematite and a bent micro Quartz.






15th May 2014 09:35 BSTKarel Bal

0221847001399995708.jpg
Quartz, Muscovite: (Var: Sericite) 96 x 79 x 45mm. / Cerro Quesgar, Ancash Department, Peru.


This quartz floater specimen exhibits a curious, arrowhead-shaped flat quartz crystal of 21x13x4mm at the back side.

1st Sep 2014 20:28 BSTTony Charlton

Hay all :)-D,

The POD today made Me think about this thread - which seems to have lost its following- so I thought I would bring it up again.

There must be more oddities out there..... and I can not get enough of them! So please post if You have some Bent,Deformed or Strange Habit crystals.

Good digging to all and to all a good night.:-)

1st Sep 2014 21:33 BSTBob Harman

Inside an all quartz INDIANA GEODE , these several double terminated quartz crystals, up to 1 cm in size, are loosely attached and horizontally stacked upon each other. Three are easily visible, but a fourth is just out of sight. CHEERS…..BOB

2nd Sep 2014 00:10 BSTTony Peterson Expert

All of these examples represent minerals growing in an active tectonic/faulting environment, which produces some pretty weird-looking things. But that explanation won't fit a strange helical stibnite in my collection, which I presume is a result of an unusual stacking disorder:


http://www.mindat.org/photo-186195.html


I'd love to read of an explanation for it.


Tony P.

2nd Sep 2014 05:41 BSTTony Charlton

Hey Bob:)-D,

Neat looking stacks;-).


Hey Tony':)-D

Nice twisted Stibanites.(tu)

See my post five posts up- this bend was caused by misaligned atoms in the growth of the crystal. This could be caused by a foreign molecule in the lattice structure of SiO2.. I suspect that the twists that appear in several of the crystals posted on this thread( including Yours) are caused by the same thing.

(This is the opinion of Me and does not reflect the opinion of the management:-D.)

4th Sep 2014 01:23 BSTMatt Ciranni

Been wanting to share this ever since I found it last weekend...I saw it and thought of this thread.

Its more than likely grossular, found in a pegmatite with feldspar and lots and lots of mica, in the mountains about 20 miles north of Boise. It looks like a crystal turned inside out, and almost like a latticework.

6th Sep 2014 02:34 BSTWayne Corwin

matt


you need better lighting, i can't see any detail :-S

6th Sep 2014 21:19 BSTJosé Zendrera Expert

0975055001408900243.jpg
Although it is not uncommon to see bended kyanite specimens, never ceases to amaze me:

6th Sep 2014 23:54 BSTJohn Montgomery Expert

0381842001386944086.jpg
FLUORAPATITE 6.5 cm x 6 cm x 4.5 cm

11th Sep 2014 12:56 BSTMichael Otto




This floater smoky quartz looks common until you look on the other side.

11th Sep 2014 15:25 BSTRonnie Van Dommelen

Michael,

Are you implying those are two photos of the same crystal, both sides? It doesn't seem possible. The dimensions and outline are different.

11th Sep 2014 15:32 BSTRichard Gunter Expert




The crystal terminated toward the viewer is a twisted and bent crystal from Val da Mulin, Graubunden, Switzerland. As is the case with the Brazilian crystal there is only one bent and twisted crystal among several normal crystals. Are there any theories as to how that happens?

11th Sep 2014 16:12 BSTTony Charlton

Hay All,:)-D

Good pieces !!


Hey Matt,

Is that Gossulare in a cubic form?


Hey Jose,

Neat lazy s on the Kyanite.


Hey John,

That is one gnarly Apatite there.


Hey Micheal,

Can You post Photos from other angles? Top, bottom and other sides.


Hey Richard,

Nice piece ! My guess would be that it was on the edge of a micro-fault that missed the other crystals on the plate. We find them like that hear in central California.


Here is a Schorl bloom from Rays Mica mine, spruce pine district NC. several of the crystals are bent- but the photo does not doe them justice.


13th Sep 2014 19:35 BSTMichael Otto

Ronnie Van Dommelen Wrote:

-------------------------------------------------------

> Michael,

> Are you implying those are two photos of the same

> crystal, both sides? It doesn't seem possible. The

> dimensions and outline are different.



Ronnie, Being the crystal is a floater that broke of when the pocket collapsed and healed I should have called that the bottom. Photos should explain. The first photo is with the crystal laying on the "normal" face I originally posted and the bottom of the specimen is the other photo I posted as "the other side." In the second photo the lower right side is the bottom of the first photo. The last photo shows a side view with the extreme right hand face being the forward face of the original pic of the "normal" looking side.

21st Sep 2014 06:05 BSTAM Mizunaka Expert

0106349001411275484.jpg
Cumberland style quartz cluster. Dalnegorsk. 14.2 x 14.4 cm



21st Sep 2014 13:49 BSTTony Charlton

Hey All,

Michael -Thanks for the additional photos- neat oddity there!

AM- That is something else, wow!! ( do you know what the accessory mineral on the Quartz is?)

Tony

21st Sep 2014 18:44 BSTAM Mizunaka Expert

Tony,


I don't know what the other mineral is on the quartz.


AM

26th Sep 2014 17:30 BSTJames Pool

At the recent Colorado School of Mines Geology Museum open house during the minerals shows going on that week I came across this curved crystal display in one of the new cases. It is Microcline with curved crystal growth habit from the Pikes Peak Batholith area in Teller County Colorado. The empty casts are from removed or resorbed quartz.

20th Oct 2014 08:09 BSTAM Mizunaka Expert

0235292001413788482.jpg
Quartz with hematite. Jinlong Hill, China. 8.1 x 3.5 x 7.0 cm



20th Oct 2014 08:35 BSTRob Woodside Manager

That's some c face quartz the smaller xl is growing on!

20th Oct 2014 18:18 BSTRonald J. Pellar Expert

Glued on? Sure looks like it!

20th Oct 2014 20:40 BSTAM Mizunaka Expert

No it is not glued on. The base of the protruding crystal has a tiny gap which appears to be due from etching. You can see the remaining core of the crystal.

20th Oct 2014 23:11 BSTGreg Dainty

Stibnite crystal, Hillgrove, NSW Australia. 60mm long

This specimen has a hole right thru the center. ......Greg

http://i58.tinypic.com/wjhy1k.jpg

28th Oct 2014 12:33 GMTJamison K. Brizendine Expert

0490111001248366104.jpg
Copyright © 2009 Matthew Lambert
This image is copyrighted. Unauthorized reproduction prohibited.
In my structural geology class (many moons ago) we learned about ductile deformation of the Earth’s crust. When ductile shear zones occur, the internal mineral grains (porphyroblasts) are subjected to rotation while the schist is still hot. One of the few minerals that preserve evidence of rotation is garnet. As rotation occurs, bits of garnet form S-shapes and “tails” (Van Der Plujim and Marshak 2004).


This rotation can be simulated very easily: Take a ball bearing and place it on your palm. Place your other palm on top of the ball bearing and move your top palm. The rotation of the ball bearing is directly related to the motion of your hands. Therefore, the amount of rotation is proportional to the relative displacement of your hands (in the case of the garnet, the amount of shear displacement).


This specimen isn't mine, it was collected by Matthew Lambert in 2004 and then he uploaded the picture (2009) to the database. This “Snowball Almandine” comes from Windham County, Vermont. I thought that it would be a good candidate for this thread, since I don't own one myself.




References Cited:


Lambert, M., 2009, Almandine: http://www.mindat.org/photo-242698.html


Van Der Plujim, B., and S. Marshak, 2003, Structural Geology: W. W. Norton & Company, 672 p

28th Oct 2014 13:06 GMTTony Charlton

Hey Y'all, :)-D

Jamison-- That is an excellent explanation of bent forms.(tu) Also great Almanidine!! Thanks for posting here.:-)


All other posters -- I am at a loss for any more adjectives to describe the wonderfully outrageous oddities of the crystal world that have been posted here!!!!:-D(tu)(tu)(tu)

Please keep them coming.


THANK YOU ALL,

7th Nov 2014 22:44 GMTTony Charlton

Hey All, :)-D

We have not had many strange habit crystals posted so had to show this one.

Was in North Carolina in October and went to Little Pine Garnet Mine where I dug for Almandine in the tailing.

Found these that I think of as a strange habit for a garnet.The large one is 4.5 cm. long.


7th Nov 2014 23:15 GMTPeter Szarka

removed

10th Nov 2014 21:10 GMTPeter Haas Expert

Baryte with calcite from Castle Hill Quarry, Cannington, Somerset, England.

The specimen is 8 cm wide.


Note the blades at the bottom that cut at almost right angle through the bulk of the other blades:

10th Nov 2014 22:13 GMTPeter Szarka

removed

19th Nov 2014 16:40 GMTJason Ferguson

Crazy stuff! I am now going to be on the hunt for those unusual crystals!

27th Dec 2014 15:02 GMTTony Charlton

Hi All,:)-D

It has been almost a year since the start of this thread and I am truly astounded by the things that have been shown!!(tu):-)

Thanks again to all the contributions !

Here is another faulted bend "rose" Quartz from My collection--





Happy new Year to all!

27th Dec 2014 18:41 GMTStephen Rose Expert

A little (about 7 cm) curved quartz from the North Trinity Range, Pershing County, Nevada.




Cheers!


Steve

27th Dec 2014 21:15 GMTRonald J. Pellar Expert

0691403001417733572.jpg
Here's one from Dal'negorsk with apparent growth interference.






and another from Liliana Mine Mexico





with a crown of secondary quartz!


Ron

28th Dec 2014 02:08 GMTTony Charlton

Steve,

Very nice Amethyst with a neat twist!


Ronald,

Definitely a growth interference piece . Real cool piece!

And I love the "crown" also.


Thanks for the posts.

29th Dec 2014 03:36 GMTStephen Rose Expert

Another from the same hole, North Trinity Range, Pershing County, Nevada. About 7-8 cm.




Cheers!


Steve

29th Dec 2014 13:27 GMTTony Charlton

Hey Steve,

Another awesome bent crystal-- but I like the earlier post of amethyst better-- probably because of the color.

( I have not found a good amethyst crystal yet )

29th Dec 2014 14:53 GMTRolf Luetcke Expert




This one looks to me like the photos of double image taken of a scene in water but it is the complete crystal. This one was a gift from a fellow who collected it. Comes from the J-R mine in Arizona.

29th Dec 2014 14:58 GMTRolf Luetcke Expert



Found this one by accident. The specimen is a fluorite from the Tombstone location. On the bottom was this tiny crystal. It had done a lot of alteration from what it had once been. Loved the way the quartz grew in a number of stages.

29th Dec 2014 15:09 GMTTony Charlton

Rolf,

Wow !!:-D:-S those are really strange examples of the oddities of the mineral world.

Thanks for adding them to this string!!!!!!!!!!!!!!!!

3rd Jan 2015 00:18 GMTTony Charlton

Hey All,

:)-D and a Happy New year!


I want to thank All who have made this a great thread and I hope that others like it as much as I do.;-)


This is a 2.57 cm fully terminated "fadden" Quartz from Big X Mountain El Dorado county, California.

7th Jan 2015 16:06 GMTJamison K. Brizendine Expert

0505528001353163839.jpg
Uploaded by Jyrki Autio
This image has been released to the public domain and may be used freely.
@ Tony Charlton


Those garnets are bizarre to say the least.


@ Stephen Rose


I really like the bent quartz too.


@ Ron Pellar


That is a very aesthetic “crown quartz”, a neat example.


While looking at various specimens on Mindat, I was intrigued by Jyrki Autio’s beryl specimen (2010) from the Haapaluoma Pegmatite, Seinäjoki, Western and Inner Finland Region, Finland. He collected this specimen in 2010 and the bent beryl is approximately 10 cm. This is one of my favorites in his collection.




Autio, J., 2010, Beryl, tourmaline: http://www.mindat.org/photo-315955.html

11th May 2015 04:57 BSTTony Charlton

Hey Jamison,

That is a neat looking beryl crystal. Thank You for posting it here.


I went to My favorite place to look for crystals and I found a nice bent Quartz crystal today, it will take some time to take a photo and post it here, but when I get the chance I will get it up here.

Tony

11th May 2015 21:41 BSTScott Rider

0752988001432673105.jpg
Here is my contribution to this neat forum!


It is a quartz crystal from Purple Hope #4 claim, Green Ridge, King County, Washington, found and purchased from Scepter Guy/Cascade Scepters.


The crystal appears to have formed into the "ceiling" of the pocket or into another quartz crystal pointing the opposite direction. It then moved or fell from that position to an open part of the pocket to allow it to recrystallize and "heal" the damage! This created a concave region where its termination should be, but then if you look under magnification, you would see the recrystallized terminations all of the top and even at its base! Very unique material!!


6 cm x 4cm

EDIT -- Cascade Scepters photographs

08179470015659139048152.jpg

03659380015659139066156.jpg

12th May 2015 00:06 BSTTony Charlton

Hey Scott,

That is a very nice "growth interruption" crystal. Thanks for sharing it with Us.

10th Jul 2015 14:57 BSTJamison K. Brizendine Expert

00063680014340499606965.jpg
It has been awhile since I posted a specimen on here, and for once it is one in my collection:


At the Cuyahoga Falls Mineral/Fossil/Gem show in April 2015, I saw this awesome gypsum specimen that I absolutely had to have (even though I prefer fluorites, celestines and dioptase). It shows a distinctive S-bend and it is from Hanksville, Wayne County, Utah, United States.


The specimen is approximately 16.2 x 2.1 x 1 cm





11th Jul 2015 13:17 BSTJerry Cone Expert

04697420014366165257341.jpg



I found this boomerang-shaped hematite crystal on 7/8/15 at the Beryllium Virgin claim in Paramount Canyon, Sierra County, New Mexico. The FOV is 6 mm in width.

15th Jul 2015 21:58 BSTMichael Otto

03716700015659108013583.jpg
These pale smoky quartz from Morris, Ct are pretty unusual looking. Pretty common for that locale as most of the pockets have collapsed and a lot of "healing" went on after the interuptions.

15th Jul 2015 22:08 BSTMichael Otto

04883710015659108138293.jpg
One more smoky collected from the floor of a large pocket, terminated on all sides.

16th Jul 2015 01:11 BSTGeoff Sterling

03777500015659108636361.jpg
Vivianite I collected at an operating gold mine in Nevada in 2008, this was the only crystal exhibiting the spiral/curved growth habit.


08216130015659139069985.jpg

00274200015659139079944.jpg

16th Jul 2015 12:51 BSTNorman King Expert

0852660001415495330.jpg
After all this development of the thread, no one has posted wire crystals (or maybe there are some, but I haven’t opened many of the non-Mindat gallery photos). Here are some copper wires. Well, at least I think wires are strange.


16th Jul 2015 13:29 BSTWayne Corwin

But Norman,,,,, bent, deformed or strange habits of crystals is normal for wires, not unusual ;-)


Nice wires BTW !

16th Jul 2015 20:17 BSTTony Charlton

It is still a bent crystal, and that fits this string!

16th Jul 2015 22:26 BSTNorman King Expert

And those are rather elongated for isometric crystals, wouldn't you say?

17th Jul 2015 03:26 BSTJeff Weissman Expert

0697994001326834978.jpg
Haven't measured the aspect ratio of this millerite crystal, but it took three images to make a single composite panoramic image. The crystal has only one point of attachment, on the left side.


17th Jul 2015 07:32 BSTReinhardt van Vuuren

Jeff Weissman Wrote:

-------------------------------------------------------

> Haven't measured the aspect ratio of this

> millerite crystal, but it took three images to

> make a single composite panoramic image. The

> crystal has only one point of attachment, on the

> left side.

>

>


That is an awesome shot wow :D I have a similar specimen that I collected but what blows my mind further is the fact that about half way up this crystal there is a small white cluster which looks like it could be a quartz crystal but at 40x it is still too small for me to see if it is on not, I unfortunately have no means of photographing it unfortunately.

19th Jul 2015 19:09 BSTMichael Otto

09195220015659111976811.jpg
Bent Aquamarine crystal collected at Case Quarry in Connecticut.

26th Jul 2015 10:15 BSTJay I. G. Roland

09516850015659115535223.jpg
My contribution is a couple of shots of bent bismuthinite crystals from South Crofty Mine (Cornwall). One resembles a fishing hook and the other barbed wire!

04125490015659139072182.jpg



Regards from a very rainy Cornwall.

4th Aug 2015 18:49 BSTKristi Hugs

06600320015659121318852.jpg



This piece was broken and then began growing in a different direction. Would this be considered bent? or because it fractured first, it is not considered a natural bend?

5th Aug 2015 01:46 BSTTony Charlton

That is definitely a bent crystal. That type is called a "faden" (where it broke and healed.).

Tony

21st Feb 2016 04:57 GMTRyan Allen

[URL=http://s864.photobucket.com/user/billycap4u/media/kyanite%202014/20160220_145506.jpg.html][IMG]http://i864.photobucket.com/albums/ab209/billycap4u/kyanite%202014/20160220_145506.jpg[/IMG][/URL]


[URL=http://s864.photobucket.com/user/billycap4u/media/kyanite%202014/20160220_144304.jpg.html][IMG]http://i864.photobucket.com/albums/ab209/billycap4u/kyanite%202014/20160220_144304.jpg[/IMG][/URL]


Some bent kyanite from near Canoe River BC

22nd Feb 2016 21:08 GMTDan Costian

06301100015659288836713.jpg
I discovered by chance your string (a friend sent me the link) and am very happy about it.

Awesome specimens. Congratulations to Tony for creating the string and to all contributors.

I would like to share with you some of my bent and other odd-shaped crystals.


A quartz cluster from China 9 cm tall



A bent and twisted quartz scepter from Jinkouhe, Leshan Prefecture, Sichuan Province, China


http://www.mindat.org/photo-597833.html
06154350015659591749509.jpg



Golden twist etched calcite from Dongpo ore field, Yizhang Co., Chenzhou Prefecture, Hunan Province, China (see the child photo, too)

http://www.mindat.org/photo-721124.html


Bent aragonite scepter from Santa Eulalia, Chihuahua, Mexico

http://www.mindat.org/photo-630661.html


Twisted selenite from Morocco

http://www.mindat.org/photo-645230.html


More oddities to follow.

23rd Feb 2016 03:03 GMTDan Costian

More oddities (2)


Bent chalcanthite from Planet Mine, Arizona.

http://www.mindat.org/photo-664077.html


Bent vivianite from Huanuni Mine, Oruro, Bolivia (see also the children photos).

http://www.mindat.org/photo-711859.html


Bent hematite (aka needle ore) from Tilden Mine, Bessemer, Gogebic Range, Upper Peninsula, MI.(better seen in the child photo).

http://www.mindat.org/photo-577135.html


Bent and twisted helectite (cave calcite) from Southwest Mine, Bisbee, Cochise Co., AZ

http://www.mindat.org/photo-628807.html


Bent and branched helectite (cave calcite) from Guilin Prefecture, Guangxi Zhuang Autonomous Region, China

http://www.mindat.org/photo-728990.html


Bent, fractured and self-repaired tabular quartz from Miram Shah Tribal Area, North Waziristan, FATA, Pakistan

http://www.mindat.org/photo-725397.html

23rd Feb 2016 05:25 GMTReinhardt van Vuuren

I'm always so lazy to follow links to photos. Those quartz scepters are interesting though.

23rd Feb 2016 14:59 GMTDan Costian

Thank you Reinhardt. Actually it's a single scepter seen under various angles.

23rd Feb 2016 16:27 GMTDan Costian

09916680015659289232573.jpg
More oddities (3)


Curved crystals of charoite from Murunskii Mts, Chara River, Alda, Rusiia



http://www.mindat.org/photo-596807.html


Not bent but an oddity: twin crystals of elbaite under a common pink and yellow envelope. From Palelni Mine, Momeik, Shan State, Burma.
09291430015659591744599.jpg


http://www.mindat.org/photo-723619.html


Bent elbaite from Paprok Mine, Kamdesh District, Nuristan Province, Pakistan.

http://www.mindat.org/photo-617660.html


Another oddity: brecciated/etched elbaite from Barra de Salinas Mining District, Coronel Murta, Minas Gerais, Brazil

http://www.mindat.org/photo-638050.html


Elbaite mushroom with curved needles from Lat Pan Mine, Mogok Township, Pyin-Oo-Lwin District, Mandalay Division, Burma

http://www.mindat.org/photo-578408.html


One-of-a-kind loop-shaped intergrown demantoid crystals from Antetezambato Demantoid-Topazolite Mine, Ambanja District, Diana Region, Antsiranana Province, Madagascar

http://www.mindat.org/photo-640828.html


Curved hair of millerite from Kaser Quarry, Ollie, Keokuk Co., Iowa

http://www.mindat.org/photo-579775.html

23rd Feb 2016 19:03 GMTDoug Schonewald

05482600015659289551295.jpg
Dan


I have seen, own, and have found quite a few quartz crystals that were 'bent' or 'curved'. Most of them were actually broken and 'healed' like the ones you've shown. This one is curved in a very nice parabola and has never been broken that I can see. All of the faces are nice and pristine. It is like it was pliable and bent into this shape. Terrible photo, but you can see what I mean. I find these crystal anomolies interesting and usually keep these specimens because I like them. This one came from the Mount Spokane area in Washington state. I also like the way shape of the cavity at the point ghosts the crystal. Almost like an external phantom.


23rd Feb 2016 20:16 GMTDan Costian

Douglas,

Your bent quartz is absolutely stunning. Wonderful specimen.

I have from Spokane a nice bubbly hyalite opal, which I used as a logo to my mindat page..

24th Feb 2016 20:56 GMTPascal Chollet Expert

08078970015659290739903.jpg
Found this one on a market.

Seller said "Brazil" with no further indications.



Pascal

25th Feb 2016 03:50 GMTDan Costian

Pascal,

I saw a bent kyanite from Barra do Salinas, Minas Gerais, Brazil

http://www.mineral-forum.com/message-board/viewtopic.php?p=189

29th Feb 2016 19:17 GMTDan Costian

Bent smoky quartz from Lechang Mine, Shaoguan Prefecture, Guangdong Province, China.


http://www.mindat.org/photo-593675.html

10th Mar 2016 00:14 GMTDan Costian

Here is the Viking Helmet, a symmetrical native silver with two curved "horns" from El Mochito Mine, Honduras.

http://www.mindat.org/photo-577685.html

11th Mar 2016 19:51 GMTDan Costian

Nicely bent crystal of schorl from the Ambatosoratra pegmatite in Madagascar.

http://www.mindat.org/photo-736359.html


P.S. I wonder if the constant visitors of this wonderful thread have lost interest in new contributions :-(

14th Mar 2016 22:33 GMTTony Charlton

Dan Costian Wrote:

-------------------------------------------------------


> P.S. I wonder if the constant visitors of this

> wonderful thread have lost interest in new

> contributions :-(


Hey Dan,

wonderful pieces that You have been sharing!! Thanks for posting them.(tu)

I am still watching, but have not been posting because of too many insults from some of the other members of this site.:-(

I have a thick skin, but do not like to be thrown in the ditch-- unless there are crystals in the bottom of it.

Tony

14th Mar 2016 23:16 GMTDan Costian

Dear Tony,


You have had such a wonderful idea and did such a great job creating this trend that no insults can shake you.

You also were always encouraging contributors to this, with nice words.

Again and again congrats!


Dan

20th Mar 2016 21:04 GMTjeff yadunno

[URL=http://s253.photobucket.com/user/subsonicdrone/media/IMG_9806_zps13khj1v1.jpg.html][IMG]http://i253.photobucket.com/albums/hh57/subsonicdrone/IMG_9806_zps13khj1v1.jpg[/IMG][/URL]


[URL=http://s253.photobucket.com/user/subsonicdrone/media/IMG_9804_zpsleoewig0.jpg.html][IMG]http://i253.photobucket.com/albums/hh57/subsonicdrone/IMG_9804_zpsleoewig0.jpg[/IMG][/URL]

21st Mar 2016 03:32 GMTTony Charlton

jeff yadunno Wrote:

-------------------------------------------------------

> http://i253.photobucket.com/albums/hh57/subsonicdr

> one/IMG_9806_zps13khj1v1.jpg

>

> http://i253.photobucket.com/albums/hh57/subsonicdr

> one/IMG_9804_zpsleoewig0.jpg



Nice bent crystal Jeff!

What is it?

21st Mar 2016 12:05 GMTjeff yadunno

my guess

biotite


from Miller property, Sebastopol

22nd Mar 2016 18:24 GMTDan Costian

Bent pyrite pseudomorph after a spear-like (stalactite-like) marcasite consisting of stacked crystals: From Ross County, Ohio.

http://www.mindat.org/photo-737844.html

27th Mar 2016 03:52 BSTDan Costian

Strongly curved (saddle) platy crystals of rhodochrosite resembling curly rose petals. From the Cavnic Mine, Romania.

http://www.mindat.org/photo-631963.html

27th Mar 2016 14:39 BSTJoel Dyer

01580690015659325229652.jpg
Here are some tourmaline crystals from Chile that started to "slow down", ponder a bit at the intersection, then took a fairly shape turn in another direction. Hard to photograph due to the strange growth habit.


Matrix is pale smoky quartz and FOV is about 1mm: transmitted cross-polarised illumination.





Edit: one of the crystals at least seems to be a "triple-chained-crystal"; how interesting :-). FOV in this second picture is about 2,5mm. Ran out of "fine focus range" here, so had to just turn the rough knob by hand, using a very dim live view, half-guessing the rough, irregular steps.

04101700015659591759237.jpg



Cheers,

27th Mar 2016 14:47 BSTReiner Mielke Expert

They look like fuses that have burnt through, very strange.

27th Mar 2016 14:57 BSTJoel Dyer

Now that's a great comment, Reiner: I didn't think about it that way. So, you think that the tourmaline almost "blew it's top then, eh? ;-)


Cheers,

28th Mar 2016 00:12 BSTTony Charlton

Joel Dyer Wrote:

-------------------------------------------------------

> Here are some tourmaline crystals from Chile that

> started to "slow down", ponder a bit at the

> intersection, then took a fairly shape turn in

> another direction. Hard to photograph due to the

> strange growth habit.

>

> Matrix is pale smoky quartz and FOV is about 1mm:

> transmitted cross-polarised illumination.

>

>

>

>

> Edit: one of the crystals at least seems to be a

> "triple-chained-crystal"; how interesting :-). FOV

> in this second picture is about 2,5mm. Ran out of

> "fine focus range" here, so had to just turn the

> rough knob by hand, using a very dim live view,

> half-guessing the rough, irregular steps.

>

>

>

> Cheers,


definitely a strange one!! Thanks for posting them.

28th Mar 2016 00:55 BSTBob Harman

08142140015659326481829.jpg
Several brassy strands of millerite penetrating completely thru a 4.0 cm double terminated barite crystal. Enlarge the pix to see it better just to the right of the middle near the top of the barite. CHEERS.....BOB

28th Mar 2016 22:19 BSTDan Costian

Another oddity: double-terminated crystals of vanadinite with darker strip in the middle. From a recent find at 660 ft. depth in the ACF Mine, Mibladen Mining District, Morocco. The crystals are banded looking like being made of layers.

http://www.mindat.org/photo-738610.html

2nd Apr 2016 19:49 BSTDan Costian

Bent strings and "feather" pyrite. Actually pyrite pseudomorph after pyrrhotite. From Pfaffenberg Mine, Neudorf, Harz, Saxony-Anhalt, Germany.

http://www.mindat.org/photo-739508.html


Enjoy!

8th Apr 2016 11:52 BSTBruce Cairncross Expert

02036850015659343937947.jpg
Here's a specimen of the Boekenhouthoek (South Africa) "cactus quartz". Two curvaceous, bent specimens, 10.5 cm.


8th Apr 2016 12:39 BSTErik Vercammen Expert

Could be a POTD for St-Valentines day: romantic embracement of two quartz crystals...

8th Apr 2016 13:01 BSTBruce Cairncross Expert

I actually thought of some sort of "romantic" caption but did not want to get lewd on Mindat ;-)

16th Apr 2016 21:38 BSTJennifer Ericsson

07059630015659352802860.jpg
Milky quartz on an unknown host rock that I found in Skåne, Sweden. Looks like an ice cream cone to me.

17th Apr 2016 03:14 BSTBootboot

02003770015659352935185.jpg
Uploaded by mindat.org
This image is copyrighted. Unauthorized reproduction prohibited.
I love this selenite cluster, it looks like a hand!

21st Apr 2016 17:57 BSTDan Costian

A multiple-bent stalactite of pyrite.

http://www.mindat.org/photo-743152.html

Notice (in the children photos) the concentric layers at the ends, specific for stalactites.

http://www.mindat.org/photo-743153.html

http://www.mindat.org/photo-743154.html

22nd Apr 2016 05:25 BSTTony Charlton

Hey Dan,

That is a nice Pyrite

22nd Apr 2016 13:46 BSTDan Costian

Thank you, Tony. Yes, it's lovely and interesting.

22nd Apr 2016 14:19 BSTJamison K. Brizendine Expert

00302290014509045973536.jpg
Thanks everyone in contributing to this thread!


My contribution today is my wacky curved galena from the Madan ore field, Rhodope Mountains, Smolyan Oblast in Bulgaria. I purchased this specimen from Don Smoley, a mineral dealer at the Stow Mineral Show near Akron/Canton. The minute he showed it to me, I had to have it in my collection! Luckily it wasn't expensive at all and is one of my favorite galenas I own. It definitely is one of the more bizarre things I have seen from Bulgaria...The dimensions are 6.5 cm x 5 cm x 1.2 cm


My best guess was that the deposit must have undergone some ductile deformation...


22nd Apr 2016 15:36 BSTDan Costian

Great, indeed. A side photo would be more interesting to show the curvature.

22nd Apr 2016 16:24 BSTJamison K. Brizendine Expert

07070200014509046954370.jpg
One of the child photos shows this:


23rd Apr 2016 22:29 BSTTony Charlton

Love the bent galena!

24th Apr 2016 02:18 BSTDan Costian

Here is some unusual lamellar (I couldn't find a more appropriated word to describe it) silver pseudomorphed to acanthite from Imiter Mine, Morocco. It is nicely curved.

http://www.mindat.org/photo-743576.html

24th Apr 2016 03:39 BSTTony Charlton

Nice one Dan, very nice!!

24th Apr 2016 15:11 BSTDan Costian

Thank you, Tony. I also enjoyed it.

30th Apr 2016 14:55 BSTRolf Luetcke Expert

02541410015659368134088.jpg

03190030015659591768072.jpg

06552310015659591764889.jpg


Yesterday I was taking some photos of a coronadite from the Glove Mine in Arizona when I found tiny wulfenite crystals in the pockets that were not damaged. By small I mean only two to three mm across. Since they were in holes they are not great photos but the thing that got me was that the crystal faces didn't seem to be very geometrically even. The faces grew a bit different than I had seen. Just hadn't seen this so took a couple, well, three photos of these crystals. I discussed the odd habit with my friends but nobody seemed to know what would cause this type of growth.

30th Apr 2016 15:04 BSTErik Vercammen Expert

Wulfenite is not di-tetragonal (like zircon or vesuvianite) but tetragonal,just like scheelite: so crystal faces can be "turned" (as long as the equivalent faces make the same angle)

2nd May 2016 13:04 BSTKevin Farrell

03312400015659369777805.jpg
Quartz

Described as "Faden, Bent, Twisted, Double Terminated and a Tabular crystal". ????

Coleman's Mine, Jessieville, Arkansas

7 x 3 x 1.5 cm

09865180015659591766890.jpg

7th May 2016 18:34 BSTŁukasz Kruszewski Expert

0780925001187986828.jpg



Not a gem species, but may be intriguing (-; The coal-fire salammoniac may be enormously elongated along the c axis, curved, etc.

13th May 2016 01:32 BSTAM Mizunaka Expert

08221440014630991767359.jpg
Quartz with rutile. 3.9 x 1.1 cm


13th May 2016 21:45 BSTTony Charlton

AM Mizunaka Wrote:

-------------------------------------------------------

> Quartz with rutile. 3.9 x 1.1 cm

>

>



Way cool AM, that is a seriously deformed Quartz!!

Thanks for sharing it.

Tony

14th May 2016 16:51 BSTŁukasz Kruszewski Expert

Whoa, kinda crazy these "burnt tourmalines" of Joel :-)

14th May 2016 16:53 BSTŁukasz Kruszewski Expert

I'll stay by burning coals - this skeletal sulfur makes me crazy: http://www.mindat.org/photo-30323.html

14th May 2016 16:54 BSTŁukasz Kruszewski Expert

... and the "lightbulb" (likely) salammoniac: http://www.mindat.org/photo-30321.html

14th May 2016 17:00 BSTŁukasz Kruszewski Expert

..and a bismuth-like enormous galena from Czech Rep. dumps: http://www.mindat.org/photo-514068.html - this is interesting in having micro-deformed structure by the presence of radioactive Pb-210...

14th May 2016 17:11 BSTDan Costian

Here is hopper galena from Herja, Romania

http://www.mindat.org/photo-579782.html

14th May 2016 17:18 BSTŁukasz Kruszewski Expert

Like a labyrinth (-; Thanks for add, Dan!

14th May 2016 17:47 BSTRob Woodside Manager

Fast growing hoppered galenas grow in smelter chimneys. One needs to be careful about them.

14th May 2016 18:40 BSTDan Costian

You are right, Rob, but not in this case. It is from Herja Mine not from a smelter chimney. Romania is my native country.

South of it, from Bulgaria (Krushev mine), I have spinel-twinned and stepped galena.

Both localities are well-known for interesting specimens of galena.

http://www.mindat.org/photo-689273.html

http://www.mindat.org/photo-689274.html

14th May 2016 19:04 BSTRob Woodside Manager

05600820014632539382892.jpg
Thanks Dan. For many years I could not decide if Herja or Quiruvilca was my favourite locality. It would be good to post a photo of the matrix on your hoppered galena. That is a very remarkable specimen. The Herja galenas I have seen are all octohedral.


edit: It's been a while since I looked at Herja Galenas and although they have prominent octo faces they also have cube and dodec modifications. Some are quite "melted".


17th May 2016 15:39 BSTDan Costian

Column of stacked crystals of fluorapatite from Lavra do Sapo Mine, Brazil

http://www.mindat.org/photo-739173.html

17th May 2016 17:50 BSTGrzegorz Słowik

01598810014632281269852.jpg
Bent Pyrite xl from Trepča Stan Terg Mine ;)

18th May 2016 05:01 BSTTony Charlton

Very nice pieces Rob, Dan and Grzegorz!!!

Thanks for sharing them.

21st May 2016 16:07 BSTDan Costian

Thanks Tony.

Here is another oddity: twisted cassiterite from Taylor Creek Tin District, Sierra Co., New Mexico.

Ex John Krygier Collection.

http://www.mindat.org/photo-740231.html

21st May 2016 16:20 BSTŁukasz Kruszewski Expert

The cassiterite reminds me some goethite or lepidocrocite forms. Interesting - thanks for linking :-)

21st May 2016 18:33 BSTDan Costian

Thank you, Łukasz.

25th May 2016 21:44 BSTŁukasz Kruszewski Expert

Just noticed this chiavennite "rose-flower": http://www.mindat.org/photo-306467.html. Maybe not really bent or sth, but I think it's a nice combo with aegirine acting as the stem ;-)

25th May 2016 23:20 BSTŁukasz Kruszewski Expert

Talking 'bout "plants": http://www.mindat.org/photo-95137.html - thanks to Stephan we can admire a zircon tree... and the Eifel minerals tend to be somewhat strange in habit.

25th May 2016 23:36 BSTŁukasz Kruszewski Expert

Just not to waste the words:


http://www.mindat.org/photo-73066.html -> bellbergite mushroom


http://www.mindat.org/photo-102081.html - malachite, I think quite untypical


http://www.mindat.org/photo-173541.html - quartz pseudo


http://www.mindat.org/photo-454920.html - spherical, somewhat opal-like fluorite


http://www.mindat.org/photo-97404.html - yet anoter long zircon


http://www.mindat.org/photo-62762.html - hematite


http://www.mindat.org/photo-113099.html - bent pseudobrookite


http://www.mindat.org/photo-252205.html - titanite

26th May 2016 00:06 BSTDan Costian

Hi Łukasz,


Your plants are absolutely awesome. And I love also your titanite.


Cheers,


Dan

26th May 2016 00:33 BSTŁukasz Kruszewski Expert

Not mine, Dan ;-) I only have some crazy salammoniacs, but just got remembered these Caspar cuties...

26th May 2016 08:33 BSTJoel Dyer

Really nice stuff & excellent photos, Łukasz!


Cheers,

26th May 2016 13:54 BSTTony Charlton

Łukasz Kruszewski Wrote:

-------------------------------------------------------

> Just not to waste the words:

>

> http://www.mindat.org/photo-73066.html ->

> bellbergite mushroom

>

> http://www.mindat.org/photo-102081.html -

> malachite, I think quite untypical

>

> http://www.mindat.org/photo-173541.html - quartz

> pseudo

>

> http://www.mindat.org/photo-454920.html -

> spherical, somewhat opal-like fluorite

>

> http://www.mindat.org/photo-97404.html - yet

> anoter long zircon

>

> http://www.mindat.org/photo-62762.html - hematite

>

> http://www.mindat.org/photo-113099.html - bent

> pseudobrookite

>

> http://www.mindat.org/photo-252205.html - titanite



Very nice examples!! Thanks for sharing!

26th May 2016 14:14 BSTŁukasz Kruszewski Expert

My pleasure, Tony!


I've found even more unique examples:


- http://www.mindat.org/photo-62763.html - hematite with unusual termination


- http://www.mindat.org/photo-46676.html - partially filled skeletal hematite in form of a frame


- http://www.mindat.org/photo-48076.html - my favourite: hematite "tree"


- http://www.mindat.org/photo-673900.html - a hematite caterpillar??


- http://www.mindat.org/photo-89538.html - grandidierite


- http://www.mindat.org/photo-94887.html - fluorite... mushrooms???


- http://www.mindat.org/photo-95094.html - a very cool cristobalite+tridymite

26th May 2016 15:18 BSTDan Costian

All very cool.

Cheers,

Dan


Here is a nice snaky gypsum (Schlangengips): folded and banded boudinage with alabaster "eyes" (Alabasteraugen). Enterolitic fold dating back to Permian, (about 250 million years ago) from Nordhausen, Harz, Thuringia, Germany.


http://www.mindat.org/photo-580020.html

26th May 2016 17:21 BSTŁukasz Kruszewski Expert

Nice - resembles an anhydrite sample I've seen (a photo of), I think from Austria.

26th May 2016 20:05 BSTŁukasz Kruszewski Expert

...still being in the evaporite mineral bent textures topic: http://www.mindat.org/photo-160346.html

26th May 2016 21:29 BSTDoug Schonewald

06612930015659391919423.jpg
the photo is terrible and one day I will dig out this specimen and take a better picture. Malachite (un-analyzed) 'thread' on pyroclastic tuff. There are also a few 'malachite' stalactites that started to form below the thread. Slightly above is a malachite crust.

26th May 2016 23:49 BSTŁukasz Kruszewski Expert

Wired malachite.... now that's really cool (-; Way better than a real/artificial wire covered in some Cu secondaries that I've found in a burning dump. But seeing this pic I'd also think about jamborite.

26th May 2016 23:52 BSTŁukasz Kruszewski Expert

http://www.mindat.org/photo-419787.html - I think that's the best pic with bent jamborite

26th May 2016 23:54 BSTŁukasz Kruszewski Expert

...and what I think is the "master of bending" - typical Shikoku stibnite: http://www.mindat.org/photo-269299.html

26th May 2016 23:58 BSTŁukasz Kruszewski Expert

But shall we forget about the mineral that has "strange habit" in its name? Tubulite:


http://www.mindat.org/photo-478380.html


http://www.mindat.org/photo-473282.html

27th May 2016 03:31 BSTDean Allum Expert

Fun Specimens Lucasz!


Do you ever consider how those zircons formed? From the melt, or by sublimation?


-Dean

27th May 2016 04:08 BSTJake Harper Expert

09213340015659392017608.jpg
A beautifully bent doubly terminated milky quartz crystal from the Feather River Canyon at Lake Oroville, Butte Co., CA. This crystal was collected in 1994. Associated species were albite and chlorite.
01566030015659591771782.jpg

27th May 2016 04:55 BSTTony Charlton

Sweet bent there Jake!! Thanks for sharing.

27th May 2016 05:05 BSTTony Charlton

Too much neat things in that grouping! Thanks for the links Lucasz!

27th May 2016 15:21 BSTŁukasz Kruszewski Expert

Well, this quartz may win in the competition with stibnite (-;

27th May 2016 15:30 BSTŁukasz Kruszewski Expert

Thanks, Dean. Not sure about the formation mechanism, but is must have been a quick one; while searching for the information on dendritic growth I've found an information that the cause is that " the interface instability applies at all points along its growth front". The full info is here if you're interested: http://www.msm.cam.ac.uk/phase-trans/dendrites.html


Cheers!

4th Jun 2016 18:33 BSTDan Costian

It's unusual to see triangular striated crystals of pyrite but in the Glendon District, Moore County, NC it happened before :-)

http://www.mindat.org/photo-752362.html

4th Jun 2016 19:55 BSTŁukasz Kruszewski Expert

Nice, Dan. Resembles arsenopyrite a little bit, I think.

4th Jun 2016 20:38 BSTDan Costian

Thank you, Łukas.

It is only pyrite. On the opposite side of the same specimen there is another strange habit of pyrite: an elongated crystal 1.9 x 1.1 x 0.8 cm which I just uploaded on mindat. So, two strange habits of pyrite from the Glendon District, Moore County, NC.

The matrix is kaolinite and muscovite.

http://www.mindat.org/photo-752348.html

4th Jun 2016 21:16 BSTŁukasz Kruszewski Expert

I find this weathered pyrite quite interesting: http://www.mindat.org/photo-24062.html

4th Jun 2016 23:05 BSTRolf Luetcke Expert

03777400015659393847360.jpg


This little quartz is on a specimen from the Ojuela Mine in Durango, Mexico. It is only about 2mm long, double terminated and has odd growth along the sides of the crystal. lower xl is a hemimorphite.

4th Jun 2016 23:08 BSTŁukasz Kruszewski Expert

Nice one, Rolf. The quartz looks like it was fibrous.

4th Jun 2016 23:15 BSTDan Costian

Łukasz,

I have a concretion similar to your 100020, which is pyrite reminding the marcassite stacks.

And the iron-cross pyrite is absolutely perfect. WOW !

Here is my cockscomb concretion similar to 100020:

http://www.mindat.org/photo-673912.html

5th Jun 2016 00:57 BSTŁukasz Kruszewski Expert

These are not my specimens, just linked the photos found in Mindat ;-)

5th Jun 2016 01:32 BSTTony Charlton

Hey Guys,

Loving all the nice pieces that You are posting!!


Łukasz Kruszewski Wrote:

-------------------------------------------------------

> These are not my specimens, just linked the photos

> found in Mindat ;-)


Thanks for bringing them to this thread!!


To bad the owners do not.

5th Jun 2016 14:56 BSTRolf Luetcke Expert

09698780014561864033519.jpg

02892070015659591772415.jpg


The pyrite iron cross is one I got recently from a German friend who got it from an old collection. Photos show two sides of the same crystal group.

5th Jun 2016 15:17 BSTŁukasz Kruszewski Expert

Cool geometry!

5th Jun 2016 23:46 BSTPat R Gould Jr.

04955000015659394175309.jpg
This is a grouping of quartz crystals that I found in Brilliant Alabama at the petrified wood area, estimated at 68 million years old. They are complete floater's with possible carbon inclusions from wood. The outside rim is stacked quartz crystals, not sure what inflates the inner core.

attachment 64651 IMG_3863.JPG]

8th Jun 2016 03:17 BSTRolf Luetcke Expert

05140310015659394932720.jpg


A fluorite crystal looking from above at the odd growth habit from New Mexico.

8th Jun 2016 15:48 BSTŁukasz Kruszewski Expert

Like a pyramid in Mexico or somewhere ;-)

9th Jun 2016 16:17 BSTDan Costian

Here is a couple of bent copper wires caught in prehnite. From Osceola Mine, Osceola, Houghton Co., MI.

http://www.mindat.org/photo-667542.html

9th Jun 2016 17:49 BSTŁukasz Kruszewski Expert

Nice combination, Dan! Thanks for posting this.


I've chosen a rather non-remarkable specimen of fluorite from Khibiny: http://www.mindat.org/photo-113955.html

I think it is interesting in that it forms a rather thick mass/vein, that look like a compact violet powder.

9th Jun 2016 18:26 BSTDan Costian

Thank you, Łukasz. The fluorite you posted is interesting, indeed. It reminded me of stichtite, which of course is not.

I have some unusual-shaped (brecciated) fluorite, of similar color. From the Big Four Group Fluorspar Mines, Illinois-Kentucky Fluorspar District.

http://www.mindat.org/photo-590247.html

9th Jun 2016 18:39 BSTŁukasz Kruszewski Expert

A rich specimen, as I can see. Haven't seen such specimens before. We only have rather simple, often octahedral, fluorites here in Poland (in pegmatites of the Strzegom-Sobótka massif), but they're quite nice and sometimes rather big (e.g., this one: http://www.mindat.org/photo-218635.html). It's nice that we can see and "exchange" so many interesting and various specimens here in this and other similar forums :-)

9th Jun 2016 20:06 BSTDan Costian

True. It was a meritorious idea of Tony to start such an interesting thread (as well as others' before - Gail - and after him - Matt-).

I cannot take me eyes from the blue fluorite you just posted.

9th Jun 2016 20:23 BSTŁukasz Kruszewski Expert

It is a case of maybe few huge ones; Most crystals from there are up to 1 cm in size and are only slightly violet. I've seen on such a huge crystal in a mineral show once (just as an exposition), and I was astonished in spite of not being a real fan of fluorite. I think the Mexican fluorites "win" with these, as this one for example: http://www.mindat.org/photo-86466.html

10th Jun 2016 17:04 BSTDan Costian

Here is a tabular twinned rhodochrosite from Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada. An architectural marvel of Mother Nature.

http://www.mindat.org/photo-753303.html

12th Jun 2016 14:05 BSTDan Costian

Unusual fibrous and bent rhodochrosite with yellow baryte from Wutong Mine, Liubao, Cangwu Co, Wuzhou, Guangxi, China.

http://www.mindat.org/photo-738419.html

15th Jun 2016 16:26 BSTŁukasz Kruszewski Expert

Dan, are you sure the yellow stuff is barite?

15th Jun 2016 16:42 BSTDan Costian

Yes, Łukasz. Golden baryte, not calcite. Because of that the specimen is heavy. It's true that baryte is a rare occurrence at this locality especially associated with rhodo, but the cute little thing comes from a recent discovery.

15th Jun 2016 19:49 BSTŁukasz Kruszewski Expert

Its quite interesting, as the look of this baryte is quite untypical. On the other hand, there are these brown and greenish-yellow radian barites (e.g., http://www.mindat.org/photo-41955.html).

16th Jun 2016 01:21 BSTTony Charlton

WOW!! Those are some great "strange habit" baryte pieces!!!

Thanks for showing them here Guys!


Tony

16th Jun 2016 06:00 BSTVolkmar Stingl

Dan Costian Wrote:

-------------------------------------------------------

> Unusual fibrous and bent rhodochrosite with yellow

> baryte from Wutong Mine, Liubao, Cangwu Co,

> Wuzhou, Guangxi, China.


Where do you see "unusual fibrous and bent" rhodo? I see only cleavage planes.

16th Jun 2016 15:14 BSTDan Costian

Volkmar, probably because I had the specimen in my hands.

16th Jun 2016 16:10 BSTNiels Brouwer

Nice baryte crystals indeed, Łukasz. This great diversity of shapes and colours was exactly what made me focus my collection on baryte.

16th Jun 2016 22:13 BSTŁukasz Kruszewski Expert

The Czech radian barites are indeed interesting. I've analyzed my specimen with Geiger counter - just normal /:

17th Jun 2016 15:12 BSTDan Costian

Curved blades could be seen in this combo with malachite and azurite independently coating/replacing (pseudomorphing?) tabular crystals of baryte (mostly white but also yellow). From Sidi Ayed, Boulemane Province, Fès-Boulemane Region, Morocco.

http://www.mindat.org/photo-719400.html

18th Jun 2016 21:43 BSTDennis McCoy

08708880015659398834905.jpg
Here are some curly crystals found in quartz box work (epimorphs) which are part of a larger calcite-marcasite-galena conglomeration. The calcite fluoresces orange. The specimen was purchased without any documentation, so I haven't a clue where it is from.

07816350015659591776072.jpg

08462140015659591774945.jpg

18th Jun 2016 23:44 BSTŁukasz Kruszewski Expert

Is this malachite or maybe some kind of Bi secondary?

19th Jun 2016 08:32 BSTVolkmar Stingl

Curly Malachite.

20th Jun 2016 01:18 BSTŁukasz Kruszewski Expert

I see.... nice! :-)

20th Jun 2016 01:20 BSTŁukasz Kruszewski Expert

While watching the sapphire gallery, I've encountered this worm: http://www.mindat.org/photo-488286.html

23rd Jun 2016 17:00 BSTRolf Luetcke Expert

00786570014666374798799.jpg


Odd growth on the outside of a flat calcite crystal where later deposition took place in a study in black and white.

29th Jun 2016 23:33 BSTRolf Luetcke Expert

05333590015652013133317.jpg

03819360015652094375210.jpg


These two photos are included in a purple fluorite piece I got as a large box of broken pieces of fluorite with no particular location. The material in the box looked like Illinois fluorite and this one small piece had a number of inclusions inside. The one crystal looks like a negative fluorite, a completely clear cube inside the fluorite. The second photo is of the same clear crystal with internal reflections making it look solid. Just a cool little piece. The metallic is pyrite also included in the fluorite. If anyone has any idea where the fluorite is from, would be nice to know.

1st Jul 2016 01:20 BSTAM Mizunaka Expert

05749260014673320619145.jpg
Quartz. 10.4 x 4.5 cm.


1st Jul 2016 03:07 BSTDan Costian

Hare is some odd pyrite showing odd V-striations (resembling cubanite). From Rico Argentine Mine, Silver Creek, Rico District, Dolores Co., Colorado.

http://www.mindat.org/photo-664040.html

1st Jul 2016 06:00 BSTNathan Scholten

06878060015659402603891.png
Uploaded by mindat.org
This image is copyrighted. Unauthorized reproduction prohibited.
The jury is still out on this one.

A 2mm crystal from the Finch Mine AZ.

It is loose in the small pocket in which it resides.

Self collected.

1st Jul 2016 13:07 BSTRolf Luetcke Expert

AM,

Have to say, that is one "ODD" quartz, would be fun to find one like that.

1st Jul 2016 15:27 BSTRob Woodside Manager

Nathan your opiment looking Finch Mine xls are probably calcite. A drop of acid would tell.

2nd Jul 2016 16:08 BSTDan Costian

Alveolar hematite left after the clay was weathered out of a septarian nodule where the cracks had been infiltrated with hematite.

From Dallas, Texas.

http://www.mindat.org/photo-649419.html

2nd Jul 2016 16:13 BSTDan Costian

Quartz included with goethite pseudomorph after fungus mycelia (improperly called fungus quartz).

From Warstein, Sauerland, North Rhine-Westphalia, Germany.

http://www.mindat.org/photo-576700.html

3rd Jul 2016 16:29 BSTJoel Dyer

Nice one, Dan!


Here's some hematite growing as a spherule, or actually a "large" hematite ball built from smaller spherules.

This is the only such "opened" hematite spherule that I found in this Kännätsalo Beryl Quarry quartz I've been microscoping: it just happened to coincide with the polished surface, in a suitable way.


https://www.flickr.com/photos/finnchaga/28053814425/


cheers,

9th Jul 2016 10:42 BSTJoel Dyer

08000670015659405457331.jpg
Here's some nice Luumäki "red quartz" crystals with a bist of "twist" :-) Naturally, the "colour" is due mostly to internal reflections from the hematite inclusions.




Cheers,

10th Jul 2016 16:16 BSTDan Costian

Thank you, Joel. Quite unusual your interesting spherules.

Here is a stack of ultra-thin “chips” of calcite with sparse pyrite crystals from Yizhang Co., Chenzhou Prefecture, Hunan Province, China.

Some are bent and look like a pile of papers on my desk, which is often very untidy :-)

http://www.mindat.org/photo-577144.html

12th Jul 2016 02:03 BSTTony Charlton

Y'All are posting some very nice specimens!! Love all the strange crystals!!

Tony

17th Jul 2016 12:34 BSTjeff yadunno

fluoro-richterite from essonville road cut


[URL=http://s253.photobucket.com/user/subsonicdrone/media/IMG_0063crop_zpstbbcqcct.jpg.html][IMG]http://i253.photobucket.com/albums/hh57/subsonicdrone/IMG_0063crop_zpstbbcqcct.jpg[/IMG][/URL]


http://www.mindat.org/loc-73287.html

23rd Jul 2016 22:43 BSTAM Mizunaka Expert

09429070014693089958665.jpg
Quartz with fluorite. 9.6 x 6.0 cm


24th Jul 2016 01:55 BSTJohn Montgomery Expert

AM cool quartz and the one from Dalnegorsk is mind blowing


regards

John

26th Jul 2016 19:12 BSTDan Costian

Here is what I would call SIAMESE TWINS: a couple of chalcedony stalactites linked to each other and completely covered with “fronds.”

From Nasik District, India.

http://www.mindat.org/photo-604148.html

15th Aug 2016 19:34 BSTDan Costian

Here is a (more or probably less usual) baryte-marcasite nodule from Lubin Mine in Poland showing curved baryte crystals (esp. in the center zone)

http://www.mindat.org/photo-765178.html

also seen under sort UV

http://www.mindat.org/photo-765179.html

and interesting linear marcasite aggregates at the exterior

http://www.mindat.org/photo-765180.html

17th Aug 2016 06:14 BSTJoel Dyer

Nice one, Dan, very interesting specimen.


Cheers,

17th Aug 2016 14:00 BSTDan Costian

Thank you, Joel.

18th Aug 2016 22:43 BSTDan Costian

Twinned bullet-shaped double-terminated gemmy pale blue aquamarine with etched faces, (so-called “Jaquetô type” after the former name of the mine).

An odd and rare shape for aquamarine.

From Guaratinga, Bahia, Brazil.

http://www.mindat.org/photo-765913.html

30th Aug 2016 18:19 BSTjeff yadunno

[URL=http://s253.photobucket.com/user/subsonicdrone/media/IMG_0594_zpsfwgucmfw.jpg.html][IMG]http://i253.photobucket.com/albums/hh57/subsonicdrone/IMG_0594_zpsfwgucmfw.jpg[/IMG][/URL]


from the tory hill area

30th Aug 2016 19:37 BSTChris Rayburn

What do you have there, Jeff--biotite?

30th Aug 2016 22:49 BSTjeff yadunno

that would be my guess

i have found a few like this in my limited collecting

is it common for mica to be bent?

30th Aug 2016 23:35 BSTChris Rayburn

Quite common, in my experience. Relatively flexible stuff. This looks like it might have wrapped around another mineral (or another piece of biotite) during formation.

31st Aug 2016 02:12 BSTMatt Courville

00741670014689356171875.jpg
On the warpy/bent mica theme here is one that goes quite tubular. Hopefully the photos do it some justice




And one more: apatite with a neat texture and growth pattern. Nothing too uncommon for type, but I have fun taking a close look from time to time;)




Matt

31st Aug 2016 15:24 BSTDan Costian

This is very uncommon specimen of Verde d'Arno (or Lineate d'Arno) which is a rare variety of "pietra paesina" or "ruin marble" existing the the Arno Valley near Florence in Tuscany, Italy.

Verde d'Arno has a specific geometric pattern which reminds the cubist paintings of Paul Klee :-)

It is characterized by the intersection of various green triangular-shaped patterns and by the presence of brown to yellow shades, all due to iron oxides coloring this marly calcite.

http://www.mindat.org/photo-768886.html

http://www.mindat.org/photo-768887.html

9th Sep 2016 16:04 BSTDan Costian

Bent and branched cave helectite consisting of calcite.

From Guilin Prefecture, Guangxi Zhuang Autonomous Region, China.

http://www.mindat.org/photo-728990.html

11th Sep 2016 02:25 BSTRolf Luetcke Expert

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00201180015659591788911.jpg



These two photos are from the San Rafael Mine in Nye County Nevada. There are a lot of strange habits of mimetite there and at first I thought this was just another one. Never had seen mimetite in those tapering crystals, they remind me more of the habit of phosphohedyphane, which is not listed at the mine but I know that doesn't mean it is not there. The problem even with testing is that it seems they are coated by mimetite so might not give an accurate reading.

Just thought the habit of these was quite odd.

If anyone has any opinions, would be happy to hear them.

Rolf

11th Sep 2016 05:41 BSTTony Charlton

Rolf Luetcke Wrote:

-------------------------------------------------------

> >

>

> These two photos are from the San Rafael Mine in

> Nye County Nevada. There are a lot of strange

> habits of mimetite there and at first I thought

> this was just another one. Never had seen

> mimetite in those tapering crystals, they remind

> me more of the habit of phosphohedyphane, which is

> not listed at the mine but I know that doesn't

> mean it is not there. The problem even with

> testing is that it seems they are coated by

> mimetite so might not give an accurate reading.

> Just thought the habit of these was quite odd.

> If anyone has any opinions, would be happy to hear

> them.

> Rolf


Do not know what they are, but they definitely fit the subject! Nice!!


Tony

11th Sep 2016 13:36 BSTRolf Luetcke Expert

08350590014735320384548.jpg



This piece could be a crossover in several threads. It is a fit for the pseudomorph thread since it is an epimorph of quartz after fluorite but I posted it here because it is one that got me wondering in a couple of things. The outer shell of the now quartz had a broken area so I could look inside. In the opening was the white and grainy quartz that was also the same shape. What this got me to wondering was if the original fluorite was a phantom and the inner white quartz had replaced the fluorite along one of the phantom layers or something else. There is also a hollow outside of the crystal so more had gone on also.

It was just an odd replacement.

13th Sep 2016 14:30 BSTDan Costian

"Classic" electric-blue bent chalcanthite from Planet Mine, Planet Mine group, Planet, Santa Maria District, Buckskin Mts, La Paz Co., Arizona,

http://www.mindat.org/photo-664077.html

14th Sep 2016 14:58 BSTDan Costian

Elongated (rectangular prism) pyrite in matrix. Main crystal size 1.9 x 1.1 x 0.8 cm. From Glendon District, Moore Co., North Carolina.

Ex Melvin Machin Collection.

http://www.mindat.org/photo-752348.html

18th Sep 2016 15:55 BSTWayne Corwin

Rolf


The quartz had grown over the fluorite,, layer by layer as the fluorite disolved, as long as the quarts could.

18th Sep 2016 18:55 BSTRolf Luetcke Expert

Wayne,

Thanks, makes perfect sense to me. Wish I could have gotten a better photo, this piece was hard to get.

3rd Oct 2016 01:45 BSTRobert Rothenberg

03423170014754555862887.jpg
I just took this photo of a Millerite from US highway 27 roadcut, Halls Gap, Lincoln Co., Kentucky, USA. There is one large curved wire. Notice the second smaller curved wire below the first. The field of view is about 1.5mm. Stacked image.

5th Oct 2016 02:31 BSTMatt Marin

09082970015659436337672.jpg
Distorted twinned scalenohedron of golden calcite, from 250 feet down in Cardin, Ottawa County, Oklahoma.

Tapers to a sort of chisel-point at one end and widens out at the other to show the asymmetric twinning pretty nicely.


04804290015659591783199.jpg

04356210015659591798622.jpg

5th Oct 2016 08:35 BSTErik Vercammen Expert

This may be a twinned crystal: may be traces of cleavage can give an indication?

18th Oct 2016 21:19 BSTDan Costian

Though not an odd (external) shape, this wulfenite displays unusual dendritic phantoms.

From the Red Cloud Mine, AZ.

http://www.mindat.org/photo-779404.html

18th Oct 2016 21:43 BSTKeith Wood

@Joel Dyer: It is possible that your tourmaline crystals did not grow that way originally, but were dissolved when a fracture cut across them, allowing fluids to interact with them. I saw the same thing with sillimanite needles in quartz in my MS study area. The sillimanites were damaged where they were cross cut by fluid inclusion assemblages. I note in your photos that near your "triple chain" are two other crystals that show similar tapering, one forming a bridge much like your "triple chain" and the other tapering to a fine point. It seems likely that a fracture passed through all three and caused the damage, then healed.


It would be interesting to revisit the area under the microscope and see if there are any fluid inclusions that seem to share a common plane with the damaged sections of the crystals. It certainly looks like there are fluid inclusions elsewhere in the sample. The quartz that heals fluid inclusions can also partially refill spaces where dissolved minerals may have been, like your tourmalines.

19th Oct 2016 23:57 BSTWayne Corwin

05038810015659442381787.jpg
This beryl crystal is from the Beauregard Mine in Alsted, NH, USA

It sort of Got Bent

20th Oct 2016 11:37 BSTChris Rayburn

Looks like it's had a hard life.

21st Oct 2016 19:41 BSTAndy Young

06692320015659442748566.jpg
Pyrite/Marcasite "wrapping" around embedded carbon material.


5cm x 5cm x 5cm


Starved Rock Clay Products Clay Pit, Lasalle County, Illinois, USA


22nd Oct 2016 10:06 BSTJoel Dyer

That's nice "tiger beryl", Wayne ;-) . Oops, maybe should avoid such namings, who knows what "magical mineral" or "gemstone" rages can start sometimes from such statements, dear me...


Cheers,

22nd Oct 2016 14:21 BSTWayne Corwin

04780910015652022801351.jpg
Thanks Joel ,,, Get many like that from there.

Another interesting specimen from the Beauregard


The mica there, if it shows crystal form, shows color zoning, often with diffrent shades in the bands.


Sorry for the camera reflection in the mica.

24th Oct 2016 20:15 BSTDan Costian

0047265001407342296.jpg
Reticulated rutile on and including quartz crystal from Hiddenite, Alexander Co., North Carolina.

30th Oct 2016 13:29 GMTjeff yadunno

I think this counts as a strange habit, correct me if i am wrong


atypical titanite found at miller property:

http://www.mindat.org/loc-243198.html


very thin like a wafer instead of a wedge shape

15mm x 13mm x 4mm

[URL=http://s253.photobucket.com/user/subsonicdrone/media/IMG_0996_zps8nmsbg7y.jpg.html][IMG]http://i253.photobucket.com/albums/hh57/subsonicdrone/IMG_0996_zps8nmsbg7y.jpg[/IMG][/URL]

[URL=http://s253.photobucket.com/user/subsonicdrone/media/IMG_1004_zpstqbvsnva.jpg.html][IMG]http://i253.photobucket.com/albums/hh57/subsonicdrone/IMG_1004_zpstqbvsnva.jpg[/IMG][/URL]

[URL=http://s253.photobucket.com/user/subsonicdrone/media/IMG_0997_zpsuxmwhika.jpg.html][IMG]http://i253.photobucket.com/albums/hh57/subsonicdrone/IMG_0997_zpsuxmwhika.jpg[/IMG][/URL]

7th Nov 2016 15:50 GMTRolf Luetcke Expert

00861550015659447146225.jpg

04337740015659591806155.jpg


These were just added to my collection as a gift from Tony Albini. They are from the Hewitt Gem Quarry in Connecticut. Nice bent crystals of elbaite in albite.

Thanks Tony

Rolf

8th Nov 2016 02:53 GMTTony Charlton

jeff yadunno Wrote:

-------------------------------------------------------

> I think this counts as a strange habit, correct me

> if i am wrong

>

> atypical titanite found at miller property:

> http://www.mindat.org/loc-243198.html


Looks like a strange habit to Me, and a nice one at that!!

Tony

8th Nov 2016 02:56 GMTTony Charlton

Rolf Luetcke Wrote:

-------------------------------------------------------

> >

> These were just added to my collection as a gift

> from Tony Albini. They are from the Hewitt Gem

> Quarry in Connecticut. Nice bent crystals of

> elbaite in albite.

> Thanks Tony

> Rolf


That is a very nice gift!!



Thanks to everyone that has posted thier specimens on this thread!

8th Nov 2016 06:33 GMTJamese Willen

What an amazing finding! My child like to discover the miracles of the nature. I think it is one of the biggest motive forces in the activities if scientific creation to explore the secrets of nature, so I want to cultivate this kind of interests.I bought him a child metal detector. I want him to study hard.;-)

14th Nov 2016 14:03 GMTRolf Luetcke Expert

08157140014482266945122.jpg



This was an odd quartz. On both sides it seems like a normal xl with hex. shape but then it grew fatter in the center and was then frosted over that growth. Don't quite know how this crystal grew but it is a cool little piece from the Tiger Mine in Arizona.

14th Nov 2016 15:58 GMTEvgenios Petrides

02300570015659448958944.jpg
"The Naked Lady of Mogok"


Corundum variety Sapphire

Mogok, Myanmar (Burma)


4th Dec 2016 19:55 GMTRolf Luetcke Expert

09735310015659455717348.jpg


This one is not bent but when I viewed it under the microscope I was baffled as to why the single sphere of wavellite crystals had this odd natural line running down the middle of the grouping. I had not seen this in other wavellites from the Willard Mine but I thought it was odd enough to post.

15th Dec 2016 00:09 GMTDan Costian

Sorry for my absence so far. I'm back now with two odd-shaped schorl.


Divergent fan-like crystals of schorl from Erongo Mountain, Namibia

http://www.mindat.org/photo-786840.html


terminated at the upper side

http://www.mindat.org/photo-786841.html


Another interesting specimen is a stalactiform schorl grown over (and included in) quartz.

From Donghai Co., Lianyungang Prefecture, Jiangsu Province, China.

http://www.mindat.org/photo-779678.html

20th Dec 2016 21:26 GMTRolf Luetcke Expert

02128680014820225704608.jpg


I was taking photos of wulfenite from a small mine called the San Diego Mine near Tombstone and there were several crystal habits in one piece I had broken up. Some where the normal blades, some great pyramids and this one had me going. I had not seen a wulfenite quite like it but there is nothing else in the material except a lot of habits of wulfenite.

21st Dec 2016 11:17 GMTDale Foster Expert

07861780014823186816222.jpg



Bent needle of Bismuthinite from South Crofty Mine.

3rd Feb 2017 22:08 GMTRolf Luetcke Expert

06654010014861609235471.jpg


Collected these bent gypsum blades just today 2-3-2017 about 15 miles from our house, St. David, Az. The longest is about 14cm long.

7th Feb 2017 17:28 GMTDan Costian

07473000014842563389446.jpg
Here is a spotted convex-concave (alveolar) malachite crust from the Kolwezi Mine, Congo.

https://www.mindat.org/photo-795661.html (front)

https://www.mindat.org/photo-795662.html (back)

9th Feb 2017 14:31 GMTRolf Luetcke Expert

02306470014865985649082.jpg


Taking some Arizona wulfenite photos from the Defiance Mine I had collected these back in the 1970's and the smooth curve of the crystal faces was a bit unusual. Most are straight sided but these were smoothly curved.

10th Feb 2017 04:02 GMTDan Costian

0830949001386814922.jpg
Ball of phlogopite wrapped in radial anthophyllite resulting in the shape called "Heřmanov sphere."

4th Apr 2017 02:02 BSTRolf Luetcke Expert

03847510015651815109985.jpg



Taking some photos today and came across this mimetite that was very unusual. I am hoping someone will have ideas about this strange habit.

The first thing I noticed was that the general shape of the larger parts was hexagonal but thin and not the normal elongated hex. crystal. Second thing I saw was that the larger shapes were composed of masses of tiny mimetite crystals in more normal shapes. I have no idea what the mimetite was actually trying to do here???

The Grey Horse has some interesting material but this one had me wondering.

Any ideas would be greatly appreciated.

Rolf Luetcke

4th Apr 2017 02:53 BSTRuggy Holloway

09357390015651815126952.jpg
Stibnite from Fencemaker Mine, Nevada


scale shown incorrect should read .1mm

5th Apr 2017 00:55 BSTTony Charlton

Ruggy Holloway Wrote:

-------------------------------------------------------

> Stibnite from Fencemaker Mine, Nevada

>

> scale shown incorrect should read .1mm

>



That is one of the most deformed crystals ever!! Nice!

19th Apr 2017 14:53 BSTRolf Luetcke Expert

09515630015037527765872.jpg


This one is a bit of a double unusual. The curved quartz in this little pocket was not wildly curved but a nice, gentle curve. Then the wulfenite was hollow in the pocket also.

Unfortunately the mine was traded a few years back and is now in a preserve and no longer open to collecting. Fortunately I had collected there for about 40 years before it was closed off.

13th Jul 2017 18:26 BSTJason Ferguson

06772650015651842207152.jpg



A smoky I dug up at Devils Head Colorado

9th Aug 2017 13:51 BSTRolf Luetcke Expert

06585980015022284151684.jpg

02655210015652123856194.jpg


Came across this little malachite a while back and set it aside until I could get a photo of it. Comes from some small prospects from Apache Pass in SE Arizona. A friend was looking for a specimen with some gold in it from there and gave me the mass of the material. I found this very odd malachite piece in one pocket. There is more normal malachite in other parts of the same piece but what happened here I don't know. It is very satiny when you look at it under about 40x under the microscope.

Thought if fit with "odd" habits quite well.

19th Aug 2017 07:44 BSTAqua marine

06248610015651851234585.jpg
Here is another example of bent tourmaline on quartz from Laghman Afghanistan . The interesting thing is that it has also entered in the quartz crystal after bending.

19th Aug 2017 18:19 BSTRolf Luetcke Expert

07414460015030994928853.jpg


Just came across this little quartz from the Big Bertha Mine near Quartzsite Arizona. I think it couldn't make up its mind just what shape to follow and then put on a frosty cap.

22nd Aug 2017 13:17 BSTPaul S. Jones

03262750015651851775516.jpg
Bent irradiated quartz. Unknown locale.

4th Sep 2017 21:31 BSTChris Rayburn

00489230015651854337249.jpg
Curved blades of Celestine in a jasper geode, from the Greasewood Draw area, Emery Co., Utah USA. Clay inclusions give the Celestine a dirty appearance but the crystals still have gemmy surfaces, which creates an odd visual effect. Found this one in mid-June.

27th Dec 2017 15:58 GMTTony Charlton

Some wonderful pieces Y'all have posted!

27th Dec 2017 17:13 GMTOwen Lewis

00825340015651834041708.jpg
Spodumene var kunzite. Locality unknown. Showing curved growth and also curved cleavage in one plane (!) Mag x30.


27th Dec 2017 20:28 GMTSteve Hardinger Expert

I'm not convinced the curvature is a result of growth. Instead I believe it is a result of etching. I see this pattern quite frequently on the terminations (or what is left of the terminations) and within cavities on heavily-etched (especially gemmy) spodumene crystals.

15th Aug 2018 00:12 BSTRolf Luetcke Expert

09105090015343400264561.jpg


Have not forgotten this thread and today I came across a bit of an oddball xl of quartz. It is in a hematite pocket and that gives it the color but it is both curved and has a multiple tip growth. From the Gallagher Mine in Cochise Co. Arizona.

16th Aug 2018 19:41 BSTTony Charlton

Nice one Rolf!

18th Aug 2018 00:17 BSTJeff Collens

03574200015651944016550.jpg
Not sure what mineral it is, but I got this specimen at the Schickler Fluorite Occurrence. Looks like the one crystal smashed into the other one before getting frozen in the calcite.


The broken crystal is 2 by 2 by 4 cm.

18th Aug 2018 08:25 BSTNick Gilly

Looking at phtos from there, I'd say they were probably augite crystals.

18th Aug 2018 13:24 BSTReiner Mielke Expert

Looks like diopside to me.

18th Aug 2018 14:29 BSTNick Gilly

Could be.


How about a heart-shaped ruby crystal?:


[img]https://farm2.staticflickr.com/1845/43392269414_d22ee28381_k_d.jpg[/img]


[img]https://farm2.staticflickr.com/1900/43392282484_e500b05e7e_k_d.jpg[/img]


I'm not sure whether this is some sort of twinning effect, but I thought it was appropriate for ruby ;-)

18th Aug 2018 15:22 BSTNick Gilly

Or how about a spinel crystal cluster with what could be hundreds of repeating parallel octahedral faces making up larger crystals?:


[img]https://farm2.staticflickr.com/1875/43393027444_f72e158dc4_k_d.jpg[/img]


This seems to be a particularly extreme example.

18th Aug 2018 16:59 BSTTony Charlton

Nice pices Nick.

Thanks for adding to this thread.

19th Aug 2018 14:21 BSTNick Gilly

Thanks Tony.


Another view of the spinel cluster with a clearer view via reflection from the multiple crystal faces:


[img]https://farm2.staticflickr.com/1890/43224607115_d7f9f16a4f_k_d.jpg[/img]


What causes these compound clusters to grow in this way, I wonder?

11th Sep 2018 15:49 BSTRolf Luetcke Expert

05131870015651949321678.jpg



This quartz crystal was a bit odd when I saw it. The quartz on the material is mostly completely clear but this one pocket was full of iron oxides also and coated much of the quartz. This crystal had a nice shape and then was coated by hematite and after this more quartz came in and partly coated the tip with clear growth in a very geometric shape. Had not seen one quite like this.

11th Sep 2018 17:36 BSTSteve Stuart Expert

0565563001364147495.jpg




Curved pseudobrookite from Warm Springs Canyon, Sierra County, New Mexico. 2mm FOV.

15th Sep 2018 05:47 BSTTony Charlton

That is a beautiful quartz Rolf!


Nice pseudobrookite Steve.

7th Nov 2018 21:36 GMTAllan C Smith

01129410015651965632331.jpg
I would say this goes under strange habits. This piece was given to me years back with the label saying it was from Pipestone Road, somewhere southern Arizona. He was curious as to why this quartz formed this way. As far as my research goes, I came up with honeycomb quartz.

09412500015652123859685.jpg



There are several reverse septers in this piece also. Any thoughts on the the honeycomb?

7th Nov 2018 22:45 GMTRolf Luetcke Expert

05856170015651965707785.jpg

03136350015652123876341.jpg


Alan,

I have heard of two terms used for the kind of quartz you pictured, the first is skeletal and the other is hoppered. Not sure either which fits best.

The honeycomb is more like the second photo I collected in Arizona.

Hope this helps

7th Nov 2018 23:31 GMTScott Rider

I wonder about that type of quartz. Is it a product of growth interference? As if the quartz forms around something that prevents it forming a normal pyramidal termination... Or are there defects within the lattice that causes this? By the way Allan and Rolf, pretty cool specimens you guys got there! Especially your first image Rolf, that one is pretty cool!

8th Nov 2018 02:50 GMTTony Charlton

Nice pieces guys!


It is My understanding that there are 2 theories on causes for the "skeletal" or "hopper" quartz.

The first is from concurrent mineral growth with the quartz, which blocks the quartz growth.

The other way is do to discrete growth of the edges of a face. For some unexplained reason the molecules will only attach near the junction of the crystals faces.


It does seem to be formation dependant.

8th Nov 2018 13:24 GMTRolf Luetcke Expert

09467520015651965723624.jpg

07360530015652123874501.jpg


Following the hoppering, vanadinite is another mineral known for hoppering.

The first one is an Arizona specimen I collected and shows the hoppering of the crystals.

The second photo is also from the same location but in this case, the top of the crystal did something I have no idea what it is called. The top seemed to grow out in a weird way. You can still see the normal habit below but then it fanned out toward the top.

8th Nov 2018 17:18 GMTRolf Luetcke Expert

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Found two of the better red vanadinite photos from Arizona I had. The term used here is hoppered.

8th Nov 2018 18:25 GMTRolf Luetcke Expert

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This quartz, also from New Mexico, is a skeletal and a scepter both in one. The skeletal part only goes part way into the one elongated face of the crystal and is a bit difficult to get a really good photo of.

9th Nov 2018 09:50 GMTMarisa Writer

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I found a bent aquamarine crystal from many.


Locality: Xuan Le, Thanh Hoa Province, Vietnam

7th Dec 2018 13:47 GMTRolf Luetcke Expert

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Not exactly a bent or odd crystal but a fun little effect inside a Tri State fluorite. We got a box of small broken pieces in a collection years ago and I was looking for inclusions in the pieces and one had a really nice rainbow inside part of the broken crystal. Took a couple of photos and I found it had most of the rainbow colors. Not much I can do with the photo but thought I share it here. I am sure others have seen the same things in crystals.

9th Dec 2018 07:40 GMTSteven Renaud

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Here are some funky goethite ps. pyrite specimens I found. The one on the right is a single cube that fractured, shifted, then rehealed in situ. The two center specimens are the truly funky pieces, they are both oddly curly. The 4 stack on the left aren't too odd but are certainly not cimple cubes.


Hope you like them!


9th Dec 2018 13:16 GMTRolf Luetcke Expert

Steven,

Don't know where you collected those but in SE Arizona we have a marble quarry where we find very similar crystals. I found something quite unusual in the crystals we found. A few are magnetic and we had wondered why this was and the topography had something to do with it. The crystals grew in a ridge which probably attracted the lightning in the summer storms and those ridges must have been hit over time and the area that was hit by a bolt was super heated just in that area of the bolt and magnetized the crystals at that spot. Every bolt over time must have done this and the weathering left the crystals loose below. It was the only explanation I could find that fit the situation. Didn't find any curved ones though.

9th Dec 2018 13:28 GMTJohn Montgomery Expert

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Bent scepter quartz

10th Dec 2018 02:11 GMTSteven Renaud

Rolf, never heard of magnetic goethite before! Thanks for the interesting anecdote.

10th Dec 2018 17:29 GMTRolf Luetcke Expert

Steven,

I read an article somewhere where they had the limonite pseudomorphs after pyrite and ina lab and heated them to high temperatures and apparently oriented the atoms inside and they became magnetized, hence my thought of the lightning causing the few in the area to be magnetic. I assume it may be the same with goethite but don't recall if that was mentioned specifically. If I find the information again, will try and give the reference.

18th Jun 2019 21:26 BSTRolf Luetcke Expert

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Had to find this thread since today I came across a cool twisted habit of millerite I read is called eshelby twist.

From a nice geode of millerite I got years ago for all of $5 at a dealer in Tucson.

18th Jun 2019 21:27 BSTRolf Luetcke Expert

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Here are a couple of bent millerite crystals from Canada.

19th Jun 2019 11:28 BSTJobe Giles

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Self collected, bent, tabular, faden quartz on a cluster, undisclosed location El Dorado Co., California.


Another slightly bent crystal with chlorite and rutile inclusions
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Bent faden quartz, must have been a shard from a larger fractured crystal that broke off while conditions were still favorable for growth.
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Continuing in the next post.

19th Jun 2019 11:38 BSTJobe Giles

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Continued from above, this is the back side of the last photo.


As you can see in this photo, this crystal is bent two different directions on its C-axis. It’s bent towards the flcamera and to the right.
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20th Jun 2019 23:02 BSTTony Charlton

Nice ones Jobe

Are You going to make the El Dorado club meeting tonight?

29th Jul 2019 01:48 BSTTony Charlton

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Here is one I dug up on thursday.

It is a little under an inch long and sits on a fully terminated shard crystal.

Never seen a quarts with a V cross section, have Y'all?

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29th Jul 2019 01:50 BSTTony Charlton

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29th Jul 2019 01:51 BSTTony Charlton

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29th Jul 2019 20:47 BSTJobe Giles

Hey Tony, I was bummed not to be able to make it to the club meeting, Thursday nights are tough nights for me to get away. That V crystal is verrrry interesting!!! I have not seen anything like that. It’s like a japan-law but on the C-axis! I once found a pocket of these weird crystals that were very similar to the crystal in your original post of this thread. The crystal gre at a 45* badge to the c-axis. Very neat little rectangular crystals

6th Aug 2019 19:51 BSTNick Gilly

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Here's one that had me barking up the wrong tree for a few weeks:

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I had these crystals Raman tested at Southampton University and they turned out to be dravite tourmaline. I've never seen dravite in that tabular hexagonal habit before. This specimen is from the Koksha Valley in Afghanistan.

22nd Aug 2019 04:13 BSTJobe Giles

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Revisiting the hoppered trend from above, here is a Hoppered Albite from El dorado County CA. Here are a few other photos:

22nd Aug 2019 04:19 BSTJobe Giles

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A couple better photos;

22nd Aug 2019 04:21 BSTJobe Giles

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Another. 

22nd Aug 2019 22:41 BSTScott Rider

I wonder what causes the albite to form this way.  Maybe it was forming  around another mineral?  Really, really cool stuff you got Jobe!!! 

22nd Aug 2019 04:23 BSTJobe Giles

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Strange quartz crystal that must have been contacted on multiple faces at one time.it doesn’t look like it but the upper end is fully terminated with multiple terminations.

22nd Aug 2019 04:25 BSTJobe Giles

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Another angle, I still haven’t figured out how to attach multiple images to one post. 

22nd Aug 2019 04:25 BSTJobe Giles

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3rd and last image

22nd Aug 2019 04:28 BSTJobe Giles

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Citrine from El Dorado county CA. A group of healed shards that all grew together, found in a pocket where many of the crystals had become dislodged but continued to grow. 

22nd Aug 2019 04:30 BSTJobe Giles

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Another crystal from the same pocket as the above specimen. 

22nd Aug 2019 04:32 BSTJobe Giles

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Angle 2

22nd Aug 2019 04:34 BSTJobe Giles

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Angle 3

22nd Aug 2019 04:51 BSTGareth Evans

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Thulium crystals (dendrites). FOV 2 mm

22nd Aug 2019 05:55 BSTJobe Giles

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Chlorite included triangular tabby. 

22nd Aug 2019 05:56 BSTJobe Giles

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Back side 

22nd Aug 2019 16:38 BSTChris Rayburn

Cool hoppered albite Jobe!  It cleaned up very nicely.

22nd Aug 2019 17:51 BSTJobe Giles

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The crazy thing is, they came out of the ground this clean, the pocket has a light sand and a ton of Muscovite, it was like digging through glitter. Both washed off with water and there was a thin coat of what I believe is iron included hyalite, it fluoresces green under SW UV. You can see some of this coating on the lower end of this crystal and on some of the Albite. This one has never been cleaned with more than water

22nd Aug 2019 21:55 BSTGareth Evans

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Cylindrite - FOV 3 mm. It does not get any crazier than the morphology of this rare mineral from Bolivia.
 
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