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Generalbent, deformed or strange habits of crystals
1st Jan 2014 02:53 UTCTony Charlton
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 UTCMaggie Wilson Expert
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 UTCDavid Baldwin
1st Jan 2014 15:14 UTCReiner Mielke Expert
1st Jan 2014 15:17 UTCBob Harman
1st Jan 2014 16:05 UTCAnonymous User
http://www.pbase.com/bjorn_b/image/153695506/original.jpg
1st Jan 2014 16:07 UTCAdam Berluti
Happy New Year!
1st Jan 2014 16:24 UTCOlav Revheim Manager
Olav
1st Jan 2014 20:47 UTCDean Allum Expert
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 UTCChris Rayburn
1st Jan 2014 23:17 UTCTony Charlton
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 UTCDaniel 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 02:01 UTCMaggie Wilson Expert
2nd Jan 2014 02:45 UTCDoug Daniels
2nd Jan 2014 03:03 UTCAnonymous User
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 UTCTony Charlton
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 UTCTony Charlton
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 UTCGerhard Niklasch Expert
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 UTCGrzegorz Słowik
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 UTCPaul Pohwat
3rd Jan 2014 20:50 UTCStephen Rose Expert
Cheers!
Steve
3rd Jan 2014 22:42 UTCMichael Otto
4th Jan 2014 00:35 UTCMickey Marks
4th Jan 2014 01:49 UTCDan Fountain
4th Jan 2014 03:20 UTCWayne Corwin
Thats a contact mark, from quartz or garnet i suppect.
4th Jan 2014 08:34 UTCPierre Rondelez
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 UTCGrzegorz Słowik
-------------------------------------------------------
> 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 UTCTony Charlton
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 UTCMaggie Wilson Expert
4th Jan 2014 16:45 UTCMario Pauwels
Best regards,
Mario Pauwels
4th Jan 2014 19:58 UTCRonald J. Pellar Expert
5th Jan 2014 14:17 UTCMichael Otto
-------------------------------------------------------
> 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.
6th Jan 2014 04:33 UTCDr. Paul Bordovsky
Here is a bent elbaite from Pech, Afghanistan.
6th Jan 2014 07:19 UTCAM Mizunaka 🌟 Expert
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 UTCKarel Bal
6th Jan 2014 14:12 UTCKarel Bal
6th Jan 2014 14:21 UTCKarel Bal
97 x 35 x 14mm. / minID: UFN-5RN
6th Jan 2014 14:29 UTCKarel Bal
6th Jan 2014 14:44 UTCKarel Bal
6th Jan 2014 14:55 UTCKarel Bal
Touissit, Oujda-Angad Prov., Morocco. 112 x 119 x 77mm. / minID: JHD-3PD
6th Jan 2014 15:00 UTCKarel Bal
6th Jan 2014 15:11 UTCKarel Bal
6th Jan 2014 15:42 UTCKarel Bal
6th Jan 2014 16:00 UTCKarel Bal
6th Jan 2014 18:36 UTCGrzegorz Słowik
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 UTCTony Charlton
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 UTCMickey Marks
8th Jan 2014 01:36 UTCClifford Trebilcock
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 UTCHarjo Neutkens Manager
A particularly nice bent quartz crystal, 10cm tall. From pocket I found in 2010 in Belgium.
8th Jan 2014 10:26 UTCRock Currier Expert
8th Jan 2014 11:46 UTCMaggie Wilson Expert
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 UTCTony Charlton
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 UTCNorbert Fuchs
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 UTCMarc Miterman (2)
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 UTCAnonymous User
9th Jan 2014 18:49 UTCMickey Marks
10th Jan 2014 14:33 UTCKarel Bal
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 UTCKarel Bal
Xikuangshan Sb deposit, Hunan Prov., China. 130 x 50 x 35mm. / minID: 03J-2X1
FOV: 40 x 25 mm.
10th Jan 2014 15:10 UTCKarel Bal
Hamman-Zriba Mine, Zaghouan Gov. Tunisia. 132 x 83 x 80mm. / minID: GL1-DXT
10th Jan 2014 15:23 UTCKarel Bal
10th Jan 2014 15:34 UTCKarel Bal
10th Jan 2014 15:48 UTCKarel Bal
10th Jan 2014 16:02 UTCKarel Bal
10th Jan 2014 16:13 UTCKarel Bal
10th Jan 2014 16:30 UTCKarel Bal
10th Jan 2014 16:46 UTCKarel Bal
10th Jan 2014 17:00 UTCKarel Bal
10th Jan 2014 17:20 UTCKarel Bal
That's all Folks !!!
10th Jan 2014 18:35 UTCStephanie Martin
Cool thread with more than a few curves!
regards,
stephanie :-)
10th Jan 2014 19:36 UTCTony Charlton
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 UTCTony Charlton
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 UTCTony Charlton
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 UTCTony Charlton
Just so You know that the cave is watching You while Your there!:-D
11th Jan 2014 18:44 UTCDr. Paul Bordovsky
http://diente.smugmug.com/Nature/Caverns-of-Sonora-12302011/i-4qLLhXp/0/L/PC308667a-L.jpg
http://diente.smugmug.com/Nature/Caverns-of-Sonora-12302011/i-FwWTZkg/0/L/PC308669a-L.jpg
http://diente.smugmug.com/Nature/Caverns-of-Sonora-12302011/i-ZB4WgSL/0/L/PC308599a-L.jpg
Here is a link to more pics from the Cavern. Helectites are in the latter pages.
http://diente.smugmug.com/Nature/Caverns-of-Sonora-12302011/20831521_jqPVTp
17th Jan 2014 19:22 UTCTony Charlton
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 UTCTony Charlton
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 UTCMickey Marks
28th Jan 2014 12:30 UTCNorman King 🌟 Expert
28th Jan 2014 20:30 UTCEd 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 UTCMartin Rich Expert
4th Feb 2014 20:48 UTCTony Charlton
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 UTCKarel Bal
Cool topic !!! (tu)
Thanks for sharing the nice photos, keep them coming.
Regards,
Karel :)-D
6th Feb 2014 07:07 UTCHarjo Neutkens Manager
6th Feb 2014 23:17 UTCTony Charlton
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 UTCMatt Ciranni
10th Feb 2014 00:53 UTCAM Mizunaka 🌟 Expert
10th Feb 2014 08:14 UTCBoris Erjavc
Heulandite, Maharashtra, India.
Calcite, Vodole Tunnel, Maribor, Slovenija.
Windshieldite(Ice).
10th Feb 2014 19:55 UTCMatt Ciranni
17th Feb 2014 15:36 UTCTony Charlton
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 21:54 UTCMickey Marks
18th Feb 2014 01:04 UTCVolkmar Stingl
Volkmar
18th Feb 2014 09:11 UTCVolkmar Stingl
...and weird malachite stalactites from Congo.
23rd Feb 2014 20:12 UTCMatt Ciranni
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 UTCTony Charlton
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 UTCKenO James
3rd Mar 2014 23:36 UTCTony Charlton
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 UTCGlenn Rhein
4th Mar 2014 23:59 UTCMatt Ciranni
What type of crystals are those? corundum, or apatite?
5th Mar 2014 11:36 UTCGlenn Rhein
I wish they were corundum but they are Apatite
5th Mar 2014 19:52 UTCWayne Corwin
Maybe your finger would be safer in a museum :-D
8th Mar 2014 15:51 UTCDana Morong
8th Mar 2014 17:45 UTCOlav Revheim Manager
There is a wealth of interesting stuff in this archive!
Olav
8th Mar 2014 21:44 UTCDennis McCoy
9th Mar 2014 00:38 UTCJake Harper Expert
10th Mar 2014 16:20 UTCKarel Bal
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 UTCKarel Bal
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 UTCLawrie Berthelsen (2)
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 UTCLawrie Berthelsen (2)
Bent Tourmaline, location unknown
Bent Stibnite, Hillgrove Mine, Hillgrove, New South Wales, Australia
Bent Diopside, Pakistan
11th Mar 2014 08:26 UTCKarel Bal
Very nice specimens, thanks for sharing them! (tu)
Regards,
Karel
11th Mar 2014 13:19 UTCMichel Ambroise
-------------------------------------------------------
> 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 UTCTony Charlton
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 UTCReiner Mielke Expert
16th Mar 2014 02:09 UTCTony Charlton
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 UTCJake Harper Expert
Jake
27th Mar 2014 13:57 UTCTony Charlton
Quartz.
good digging to all.
27th Mar 2014 17:43 UTCTony Charlton
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 UTCTony Charlton
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 UTCKarel Bal
This quartz floater specimen exhibits a curious, arrowhead-shaped flat quartz crystal of 21x13x4mm at the back side.
1st Sep 2014 20:28 UTCTony Charlton
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 UTCBob Harman
2nd Sep 2014 00:10 UTCTony Peterson Expert
http://www.mindat.org/photo-186195.html
I'd love to read of an explanation for it.
Tony P.
2nd Sep 2014 05:41 UTCTony Charlton
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 UTCMatt Ciranni
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 UTCWayne Corwin
you need better lighting, i can't see any detail :-S
6th Sep 2014 21:19 UTCJosé Zendrera 🌟 Manager
11th Sep 2014 12:56 UTCMichael Otto
This floater smoky quartz looks common until you look on the other side.
11th Sep 2014 15:25 UTCRonnie Van Dommelen
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 UTCRichard 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 UTCTony Charlton
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 UTCMichael Otto
-------------------------------------------------------
> 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 UTCAM Mizunaka 🌟 Expert
21st Sep 2014 13:49 UTCTony Charlton
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 UTCAM Mizunaka 🌟 Expert
I don't know what the other mineral is on the quartz.
AM
26th Sep 2014 17:30 UTCJames Pool
20th Oct 2014 08:09 UTCAM Mizunaka 🌟 Expert
20th Oct 2014 08:35 UTCRob Woodside 🌟 Manager
20th Oct 2014 18:18 UTCRonald J. Pellar Expert
20th Oct 2014 20:40 UTCAM Mizunaka 🌟 Expert
20th Oct 2014 23:11 UTCGreg Dainty
This specimen has a hole right thru the center. ......Greg
http://i58.tinypic.com/wjhy1k.jpg
28th Oct 2014 12:33 UTCJamison K. Brizendine 🌟 Expert
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 UTCTony Charlton
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 UTCTony Charlton
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 UTCPeter Szarka
10th Nov 2014 21:10 UTCPeter Haas
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 UTCPeter Szarka
19th Nov 2014 16:40 UTCJason Ferguson
27th Dec 2014 15:02 UTCTony Charlton
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 UTCStephen Rose Expert
Cheers!
Steve
27th Dec 2014 21:15 UTCRonald J. Pellar Expert
and another from Liliana Mine Mexico
with a crown of secondary quartz!
Ron
28th Dec 2014 02:08 UTCTony Charlton
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 UTCStephen Rose Expert
Cheers!
Steve
29th Dec 2014 13:27 UTCTony Charlton
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 UTCRolf 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 UTCRolf 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 UTCTony Charlton
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 UTCTony Charlton
:)-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 UTCJamison K. Brizendine 🌟 Expert
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 UTCTony Charlton
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 UTCScott Rider
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
12th May 2015 00:06 UTCTony Charlton
That is a very nice "growth interruption" crystal. Thanks for sharing it with Us.
10th Jul 2015 14:57 UTCJamison K. Brizendine 🌟 Expert
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 UTCJerry Cone 🌟 Expert
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 UTCMichael Otto
15th Jul 2015 22:08 UTCMichael Otto
16th Jul 2015 01:11 UTCGeoff Sterling
16th Jul 2015 12:51 UTCNorman King 🌟 Expert
16th Jul 2015 13:29 UTCWayne Corwin
Nice wires BTW !
16th Jul 2015 20:17 UTCTony Charlton
16th Jul 2015 22:26 UTCNorman King 🌟 Expert
17th Jul 2015 03:26 UTCJeff Weissman Expert
17th Jul 2015 07:32 UTCReinhardt van Vuuren
-------------------------------------------------------
> 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 UTCMichael Otto
26th Jul 2015 10:15 UTCJay I. G. Roland
Regards from a very rainy Cornwall.
4th Aug 2015 18:49 UTCKristi Hugs
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 UTCTony Charlton
Tony
21st Feb 2016 04:57 UTCRyan Allen
[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 UTCDan Costian
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
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 UTCDan Costian
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 UTCReinhardt van Vuuren
23rd Feb 2016 14:59 UTCDan Costian
23rd Feb 2016 16:27 UTCDan Costian
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.
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 UTCDoug Schonewald
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 UTCDan Costian
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 UTCPascal Chollet Expert
Seller said "Brazil" with no further indications.
Pascal
25th Feb 2016 03:50 UTCDan Costian
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 UTCDan Costian
http://www.mindat.org/photo-593675.html
10th Mar 2016 00:14 UTCDan Costian
http://www.mindat.org/photo-577685.html
11th Mar 2016 19:51 UTCDan Costian
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 UTCTony Charlton
-------------------------------------------------------
> 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 UTCDan Costian
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 UTCjeff yadunno
[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 UTCTony Charlton
-------------------------------------------------------
> 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 UTCjeff yadunno
biotite
from Miller property, Sebastopol
22nd Mar 2016 18:24 UTCDan Costian
http://www.mindat.org/photo-737844.html
27th Mar 2016 03:52 UTCDan Costian
http://www.mindat.org/photo-631963.html
27th Mar 2016 14:39 UTCJoel Dyer
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,
27th Mar 2016 14:47 UTCReiner Mielke Expert
27th Mar 2016 14:57 UTCJoel Dyer
Cheers,
28th Mar 2016 00:12 UTCTony Charlton
-------------------------------------------------------
> 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 UTCBob Harman
28th Mar 2016 22:19 UTCDan Costian
http://www.mindat.org/photo-738610.html
2nd Apr 2016 19:49 UTCDan Costian
http://www.mindat.org/photo-739508.html
Enjoy!
8th Apr 2016 11:52 UTCBruce Cairncross Expert
8th Apr 2016 12:39 UTCErik Vercammen Expert
8th Apr 2016 13:01 UTCBruce Cairncross Expert
16th Apr 2016 21:38 UTCJennifer Ericsson
17th Apr 2016 03:14 UTCBootboot
21st Apr 2016 17:57 UTCDan Costian
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 UTCTony Charlton
That is a nice Pyrite
22nd Apr 2016 13:46 UTCDan Costian
22nd Apr 2016 14:19 UTCJamison K. Brizendine 🌟 Expert
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 UTCDan Costian
23rd Apr 2016 22:29 UTCTony Charlton
24th Apr 2016 02:18 UTCDan Costian
http://www.mindat.org/photo-743576.html
24th Apr 2016 03:39 UTCTony Charlton
24th Apr 2016 15:11 UTCDan Costian
30th Apr 2016 14:55 UTCRolf Luetcke Expert
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 UTCErik Vercammen Expert
2nd May 2016 13:04 UTCKevin Farrell
Described as "Faden, Bent, Twisted, Double Terminated and a Tabular crystal". ????
Coleman's Mine, Jessieville, Arkansas
7 x 3 x 1.5 cm
7th May 2016 18:34 UTCŁukasz Kruszewski Expert
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 21:45 UTCTony Charlton
-------------------------------------------------------
> 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 UTCŁukasz Kruszewski Expert
14th May 2016 16:53 UTCŁukasz Kruszewski Expert
14th May 2016 16:54 UTCŁukasz Kruszewski Expert
14th May 2016 17:00 UTCŁukasz Kruszewski Expert
14th May 2016 17:11 UTCDan Costian
http://www.mindat.org/photo-579782.html
14th May 2016 17:18 UTCŁukasz Kruszewski Expert
14th May 2016 17:47 UTCRob Woodside 🌟 Manager
14th May 2016 18:40 UTCDan Costian
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 UTCRob Woodside 🌟 Manager
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 UTCDan Costian
http://www.mindat.org/photo-739173.html
18th May 2016 05:01 UTCTony Charlton
Thanks for sharing them.
21st May 2016 16:07 UTCDan Costian
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 UTCŁukasz Kruszewski Expert
21st May 2016 18:33 UTCDan Costian
25th May 2016 21:44 UTCŁukasz Kruszewski Expert
25th May 2016 23:20 UTCŁukasz Kruszewski Expert
25th May 2016 23:36 UTCŁukasz Kruszewski Expert
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 UTCDan Costian
Your plants are absolutely awesome. And I love also your titanite.
Cheers,
Dan
26th May 2016 00:33 UTCŁukasz Kruszewski Expert
26th May 2016 08:33 UTCJoel Dyer
Cheers,
26th May 2016 13:54 UTCTony Charlton
-------------------------------------------------------
> 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 UTCŁukasz Kruszewski Expert
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 UTCDan Costian
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 UTCŁukasz Kruszewski Expert
26th May 2016 20:05 UTCŁukasz Kruszewski Expert
26th May 2016 21:29 UTCDoug Schonewald
26th May 2016 23:49 UTCŁukasz Kruszewski Expert
26th May 2016 23:52 UTCŁukasz Kruszewski Expert
26th May 2016 23:54 UTCŁukasz Kruszewski Expert
26th May 2016 23:58 UTCŁukasz Kruszewski Expert
http://www.mindat.org/photo-478380.html
http://www.mindat.org/photo-473282.html
27th May 2016 03:31 UTCDean Allum Expert
Do you ever consider how those zircons formed? From the melt, or by sublimation?
-Dean
27th May 2016 04:08 UTCJake Harper Expert
27th May 2016 04:55 UTCTony Charlton
27th May 2016 05:05 UTCTony Charlton
27th May 2016 15:21 UTCŁukasz Kruszewski Expert
27th May 2016 15:30 UTCŁukasz Kruszewski Expert
Cheers!
4th Jun 2016 18:33 UTCDan Costian
http://www.mindat.org/photo-752362.html
4th Jun 2016 19:55 UTCŁukasz Kruszewski Expert
4th Jun 2016 20:38 UTCDan Costian
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 UTCŁukasz Kruszewski Expert
4th Jun 2016 21:19 UTCŁukasz Kruszewski Expert
http://www.mindat.org/photo-100020.html
http://www.mindat.org/photo-60132.html
http://www.mindat.org/photo-46489.html
http://www.mindat.org/photo-472574.html
4th Jun 2016 23:05 UTCRolf Luetcke Expert
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 UTCŁukasz Kruszewski Expert
4th Jun 2016 23:15 UTCDan Costian
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 UTCŁukasz Kruszewski Expert
5th Jun 2016 01:32 UTCTony Charlton
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 UTCRolf Luetcke Expert
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 UTCŁukasz Kruszewski Expert
5th Jun 2016 23:46 UTCPat R Gould Jr.
attachment 64651 IMG_3863.JPG]
8th Jun 2016 03:17 UTCRolf Luetcke Expert
A fluorite crystal looking from above at the odd growth habit from New Mexico.
8th Jun 2016 15:48 UTCŁukasz Kruszewski Expert
9th Jun 2016 16:17 UTCDan Costian
http://www.mindat.org/photo-667542.html
9th Jun 2016 17:49 UTCŁukasz Kruszewski Expert
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 UTCDan Costian
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 UTCŁukasz Kruszewski Expert
9th Jun 2016 20:06 UTCDan Costian
I cannot take me eyes from the blue fluorite you just posted.
9th Jun 2016 20:23 UTCŁukasz Kruszewski Expert
10th Jun 2016 17:04 UTCDan Costian
http://www.mindat.org/photo-753303.html
12th Jun 2016 14:05 UTCDan Costian
http://www.mindat.org/photo-738419.html
15th Jun 2016 16:26 UTCŁukasz Kruszewski Expert
15th Jun 2016 16:42 UTCDan Costian
15th Jun 2016 19:49 UTCŁukasz Kruszewski Expert
16th Jun 2016 01:21 UTCTony Charlton
Thanks for showing them here Guys!
Tony
16th Jun 2016 06:00 UTCVolkmar Stingl
-------------------------------------------------------
> 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 UTCDan Costian
16th Jun 2016 16:10 UTCNiels Brouwer
16th Jun 2016 22:13 UTCŁukasz Kruszewski Expert
17th Jun 2016 15:12 UTCDan Costian
http://www.mindat.org/photo-719400.html
18th Jun 2016 21:43 UTCDennis McCoy
18th Jun 2016 23:44 UTCŁukasz Kruszewski Expert
19th Jun 2016 08:32 UTCVolkmar Stingl
20th Jun 2016 01:18 UTCŁukasz Kruszewski Expert
20th Jun 2016 01:20 UTCŁukasz Kruszewski Expert
23rd Jun 2016 17:00 UTCRolf Luetcke Expert
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 UTCRolf Luetcke Expert
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 03:07 UTCDan Costian
http://www.mindat.org/photo-664040.html
1st Jul 2016 06:00 UTCNathan Scholten
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 UTCRolf Luetcke Expert
Have to say, that is one "ODD" quartz, would be fun to find one like that.
1st Jul 2016 15:27 UTCRob Woodside 🌟 Manager
2nd Jul 2016 16:08 UTCDan Costian
From Dallas, Texas.
http://www.mindat.org/photo-649419.html
2nd Jul 2016 16:13 UTCDan Costian
From Warstein, Sauerland, North Rhine-Westphalia, Germany.
http://www.mindat.org/photo-576700.html
3rd Jul 2016 16:29 UTCJoel Dyer
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 UTCJoel Dyer
Cheers,
10th Jul 2016 16:16 UTCDan Costian
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 UTCTony Charlton
Tony
17th Jul 2016 12:34 UTCjeff yadunno
[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
24th Jul 2016 01:55 UTCJohn R. Montgomery 🌟 Expert
regards
John
26th Jul 2016 19:12 UTCDan Costian
From Nasik District, India.
http://www.mindat.org/photo-604148.html
15th Aug 2016 19:34 UTCDan Costian
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 UTCJoel Dyer
Cheers,
17th Aug 2016 14:00 UTCDan Costian
18th Aug 2016 22:43 UTCDan Costian
An odd and rare shape for aquamarine.
From Guaratinga, Bahia, Brazil.
http://www.mindat.org/photo-765913.html
30th Aug 2016 18:19 UTCjeff yadunno
from the tory hill area
30th Aug 2016 19:37 UTCChris Rayburn
30th Aug 2016 22:49 UTCjeff yadunno
i have found a few like this in my limited collecting
is it common for mica to be bent?
30th Aug 2016 23:35 UTCChris Rayburn
31st Aug 2016 02:12 UTCMatt Courville
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 UTCDan Costian
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 UTCDan Costian
From Guilin Prefecture, Guangxi Zhuang Autonomous Region, China.
http://www.mindat.org/photo-728990.html
11th Sep 2016 02:25 UTCRolf Luetcke Expert
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 UTCTony Charlton
-------------------------------------------------------
> >
>
> 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 UTCRolf Luetcke Expert
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 UTCDan Costian
http://www.mindat.org/photo-664077.html
14th Sep 2016 14:58 UTCDan Costian
Ex Melvin Machin Collection.
http://www.mindat.org/photo-752348.html
18th Sep 2016 15:55 UTCWayne Corwin
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 UTCRolf Luetcke Expert
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 UTCRobert Rothenberg
5th Oct 2016 02:31 UTCMatt Marin
Tapers to a sort of chisel-point at one end and widens out at the other to show the asymmetric twinning pretty nicely.
5th Oct 2016 08:35 UTCErik Vercammen Expert
18th Oct 2016 21:19 UTCDan Costian
From the Red Cloud Mine, AZ.
http://www.mindat.org/photo-779404.html
18th Oct 2016 21:43 UTCKeith Wood
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 UTCWayne Corwin
It sort of Got Bent
20th Oct 2016 11:37 UTCChris Rayburn
21st Oct 2016 19:41 UTCAndy Young
5cm x 5cm x 5cm
Starved Rock Clay Products Clay Pit, Lasalle County, Illinois, USA
22nd Oct 2016 10:06 UTCJoel Dyer
Cheers,
22nd Oct 2016 14:21 UTCWayne Corwin
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 UTCDan Costian
30th Oct 2016 13:29 UTCjeff yadunno
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 UTCRolf Luetcke Expert
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 UTCTony Charlton
-------------------------------------------------------
> 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 UTCTony Charlton
-------------------------------------------------------
> >
> 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 UTCJamese Willen
14th Nov 2016 14:03 UTCRolf Luetcke Expert
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 UTCEvgenios Petrides
Corundum variety Sapphire
Mogok, Myanmar (Burma)
4th Dec 2016 19:55 UTCRolf Luetcke Expert
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 UTCDan Costian
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 UTCRolf Luetcke Expert
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.
3rd Feb 2017 22:08 UTCRolf Luetcke Expert
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 UTCDan Costian
https://www.mindat.org/photo-795661.html (front)
https://www.mindat.org/photo-795662.html (back)
9th Feb 2017 14:31 UTCRolf Luetcke Expert
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 UTCDan Costian
4th Apr 2017 02:02 UTCRolf Luetcke Expert
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 UTCRuggy Holloway 🌟
scale shown incorrect should read .1mm
5th Apr 2017 00:55 UTCTony Charlton
-------------------------------------------------------
> 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 UTCRolf Luetcke Expert
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.
9th Aug 2017 13:51 UTCRolf Luetcke Expert
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 UTCAqua marine
19th Aug 2017 18:19 UTCRolf Luetcke Expert
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.
4th Sep 2017 21:31 UTCChris Rayburn
27th Dec 2017 15:58 UTCTony Charlton
27th Dec 2017 17:13 UTCOwen Lewis
27th Dec 2017 20:28 UTCSteve Hardinger 🌟 Expert
15th Aug 2018 00:12 UTCRolf Luetcke Expert
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 UTCTony Charlton
18th Aug 2018 00:17 UTCJeff Collens
The broken crystal is 2 by 2 by 4 cm.
18th Aug 2018 08:25 UTCNick Gilly
18th Aug 2018 13:24 UTCReiner Mielke Expert
18th Aug 2018 14:29 UTCNick Gilly
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 UTCNick Gilly
[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 UTCTony Charlton
Thanks for adding to this thread.
19th Aug 2018 14:21 UTCNick Gilly
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 UTCRolf Luetcke Expert
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 UTCSteve Stuart Expert
Curved pseudobrookite from Warm Springs Canyon, Sierra County, New Mexico. 2mm FOV.
15th Sep 2018 05:47 UTCTony Charlton
Nice pseudobrookite Steve.
7th Nov 2018 21:36 UTCAllan C Smith
There are several reverse septers in this piece also. Any thoughts on the the honeycomb?
7th Nov 2018 22:45 UTCRolf Luetcke Expert
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 UTCScott Rider
8th Nov 2018 02:50 UTCTony Charlton
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 UTCRolf Luetcke Expert
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 UTCRolf Luetcke Expert
Found two of the better red vanadinite photos from Arizona I had. The term used here is hoppered.
8th Nov 2018 18:25 UTCRolf Luetcke Expert
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 UTCMarisa Writer
Locality: Xuan Le, Thanh Hoa Province, Vietnam
7th Dec 2018 13:47 UTCRolf Luetcke Expert
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 UTCSteven Renaud
Hope you like them!
9th Dec 2018 13:16 UTCRolf Luetcke Expert
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.
10th Dec 2018 02:11 UTCSteven Renaud
10th Dec 2018 17:29 UTCRolf Luetcke Expert
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 UTCRolf Luetcke Expert
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 UTCRolf Luetcke Expert
Here are a couple of bent millerite crystals from Canada.
19th Jun 2019 11:28 UTCEch Noch
Another slightly bent crystal with chlorite and rutile inclusions
Bent faden quartz, must have been a shard from a larger fractured crystal that broke off while conditions were still favorable for growth.
Continuing in the next post.
19th Jun 2019 11:38 UTCEch Noch
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.
20th Jun 2019 23:02 UTCTony Charlton
Are You going to make the El Dorado club meeting tonight?
29th Jul 2019 01:48 UTCTony Charlton
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?
29th Jul 2019 20:47 UTCEch Noch
6th Aug 2019 19:51 UTCNick Gilly
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 UTCEch Noch
22nd Aug 2019 22:41 UTCScott Rider
22nd Aug 2019 04:23 UTCEch Noch
22nd Aug 2019 04:25 UTCEch Noch
22nd Aug 2019 04:28 UTCEch Noch
22nd Aug 2019 16:38 UTCChris Rayburn
22nd Aug 2019 17:51 UTCEch Noch
22nd Aug 2019 21:55 UTCGareth Evans
7th Sep 2019 13:42 UTCChris Rayburn
9th Sep 2019 18:52 UTCRolf Luetcke Expert
12th Sep 2019 15:48 UTCEch Noch
23rd Oct 2019 14:16 UTCRolf Luetcke Expert
Just came across this one yesterday in material from the mine. When I saw the crystal, the first thing I noticed was the six sides. I looked at the whole specimen and all the other crystals were a noticeable wulfenite habit except this one. When I looked at it after taking the photo I saw the cleft at the left and wondered if this was an interpenetrating crystal or possibly even twinned.
Unfortunately it is a lone crystal and quite small.
It is wulfenite but not like any I had seen before.
Any ideas from people would be quite appreciated. I will post a second photo of the piece as well.
23rd Oct 2019 14:17 UTCRolf Luetcke Expert
23rd Oct 2019 14:19 UTCRolf Luetcke Expert
23rd Oct 2019 17:56 UTCUwe Kolitsch Manager
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: March 28, 2024 22:12:29
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