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Best Fluorite - Welcome

Posted by Rock Currier  
avatar Best Fluorite - Welcome
March 06, 2009 11:05AM
In this forum we hope to create articles with pictures about all good fluorite specimens from all the good fluorite localities. You are welcomed and encouraged to help create content for this and all the Best Mineral forums. You are encouraged to use the approximate format that has already been developed and exampled in the more extensively developed examples in the Best A Minerals forum. If you would like to take a crack at creating content for a particular fluorite locality(s), please read over the suggestions and example in the sticky message at the top of the A minerals forum and then add it to this thread entry and I will work with you and walk you through any problems you may encounter. Ill also create a thread entry for the mineral you want to work on and help get you started. You will not be able to create new threads in this forum, unless you are approved as a moderator of the Best Minerals forum. If you have something you think is worth adding to the thread about a particular mineral, just make a thread entry about it, and Ill add it into the thread for that particular entry or at leas ask you for more information about it. There is a huge amount of work to do, so lets get started.

Ideally what we want to know about each significant mineral from each locality is:

1. What is the largest crystal of the mineral that the locality has produced?
2. What do the best specimens from this locality look like and where can one be seen?
3. Does the locality produce a variety of different kinds of specimens of this species, and what do the best of each type look like and how many of them were found etc.
4. What are the associated minerals found with this species and what is its geological setting?
5. How abundant are these specimens and when were they found? A type locality? In other words, how rare are they.
6. How do they compare to other specimens of the same mineral from other localities?
7. How much is it worth. This should probably be optional, but in cases where specimens are worth thousands of dollars we should probably say something of the value of these things.
8. What kind of care and feeding do these specimens require? Are they delicate, radioactive, unstable, color changeable etc.?
9. Are the specimens commonly faked, and if so, how to tell if they are?
10. Are there any interesting stories relating to the collecting of these specimens or their discovery as a new mineral?

Of course this is in reality impractical, but if we keep these questions in mind, we will do a lot better job when writing about them.

Here are some interesting statistics about calcite and quartz here on Mindat (April, 2009)
Calcite: ~16,000 localities ~7400 images 56 countries represented
Quartz: ~28,800 localities ~5000 images 65 countries represented
Fluorite ~6300 localities ~6900 images 39 countries represented.
Barite ~7382 localities ~24pp images 38 countries represented

Most lists of countries of the world list a few more than 200 countries. That means that here on mindat we do not have any fluorite specimens pictured here for most of the countries in the world. I wonder how many countries in the world have no mineral localities what so ever listed here on mindat.

Rock Currier
Crystals not pistols.



Edited 4 time(s). Last edit at 05/08/2009 12:30PM by Rock Currier.
avatar Re: Best Fluorite Minerals - Welcome
March 16, 2009 01:20PM
it    
.

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Attrezzatura e tecnica sono solo l'inizio. È il fotografo che conta più di tutto. (John Hedgecoe)



Edited 1 time(s). Last edit at 03/18/2009 09:49PM by Matteo Chinellato.
avatar Re: Best Fluorite Minerals - Welcome
March 16, 2009 09:09PM
Marco, thank you for your contribution. Are the fluorite crystals associated with little calcite crystals? Pictures are an important part of Best Minerals, but equally important is the text about them. What can you tell us about the fluorite specimens from the Clara mine? How big to they get? What might the best one(s) look like. How many of them are there? etc.

Rock Currier
Crystals not pistols.
avatar Re: Best Fluorite Minerals - Welcome
March 16, 2009 09:14PM
it    
hard to answer to this info, others probably know well the Clara Mine site

Matteo, I understand. If you find someone a bit more comfortable with English who might be willing to help us with the Clara mine fluorite, point them toward us. Thanks.

Mindat Page

[www.mindat.org]


Attrezzatura e tecnica sono solo l'inizio. È il fotografo che conta più di tutto. (John Hedgecoe)



Edited 1 time(s). Last edit at 03/16/2009 09:38PM by Rock Currier.
avatar Re: Best Fluorite Minerals - Welcome
March 18, 2009 02:33PM
de    
Giving the dimensions to 0.01 mm (10 microns !) is a bit weird.

"Nichts gibt den Mangel an mathematischer Bildung auffallender zu erkennen, als maßlose Schärfe im Zahlenrechnen."

(Carl Friedrich Gauss)
avatar Re: Best Fluorite Minerals - Welcome
March 18, 2009 03:52PM
it    
this is the real measure

Mindat Page

[www.mindat.org]


Attrezzatura e tecnica sono solo l'inizio. È il fotografo che conta più di tutto. (John Hedgecoe)
avatar Re: Best Fluorite Minerals - Welcome
March 18, 2009 04:56PM
de    
Well.

This is precise. But is it accurate ?
In other words: Is your ruler calibrated ?
If so, what reference standard has been used and what's the accuracy of the latter ?

The question is whether it makes any sense to give digits that are not certain.


Related problem: On the back of an analgesic box, they say that they have added 0.2 g of aspirine per tablet. Why don't they say "200 mg" ?
I would sue them if they did and earn a lot of money !!
avatar Re: Best Fluorite Minerals - Welcome
March 18, 2009 05:00PM
it    
its take with eletronic caliber every time control for seen if the battery is low

Mindat Page

[www.mindat.org]


Attrezzatura e tecnica sono solo l'inizio. È il fotografo che conta più di tutto. (John Hedgecoe)
avatar Re: Best Fluorite Minerals - Welcome
March 18, 2009 05:34PM
Matteo,

I've told you before, please don't put external links in your mindat signature.

Jolyon
avatar Re: Best Fluorite Minerals - Welcome
March 18, 2009 05:36PM
it    
and the signature to thing serves? Go around the forums and you seen many external links

Mindat Page

[www.mindat.org]


Attrezzatura e tecnica sono solo l'inizio. È il fotografo che conta più di tutto. (John Hedgecoe)



Edited 1 time(s). Last edit at 03/18/2009 05:38PM by Matteo Chinellato.
avatar Re: Best Fluorite Minerals - Welcome
March 18, 2009 09:42PM
Matteo,
We are happy to have anyone's help here on the Best Minerals forum, but if you are going to help with pictures we at least expect you to know something about what is in the pictures. Also, like Jolyon suggests, this is not a commercial venture to help people sell mineral specimens or a forum to sneak in free advertisements.

Rock Currier
Crystals not pistols.
avatar Re: Best Fluorite Minerals - Welcome
March 18, 2009 09:44PM
it    
and where is I sale material, uh? Well no problem, I cancel the photo and bye bye.

Mindat Page

[www.mindat.org]


Attrezzatura e tecnica sono solo l'inizio. È il fotografo che conta più di tutto. (John Hedgecoe)



Edited 1 time(s). Last edit at 03/18/2009 09:49PM by Matteo Chinellato.
avatar Re: Best Fluorite Minerals - Welcome
March 18, 2009 09:47PM
Matteo,
It is pretty obvious to any thinking person.

Rock Currier
Crystals not pistols.
avatar Re: Best Fluorite Minerals - Welcome
May 06, 2009 02:20PM
pl    
And what about Polish fluorites from Strzegom??

Tom

-------------------------------------
"Spirifer" Geological Society
Re: Best Fluorite - Welcome
September 22, 2011 03:08PM
pt    
Rock,
Vale das Gatas Mine, Sabrosa, Vila Real District, Portugal
[www.mindat.org]
This was the best all times fluorite occurrence in Portugal; there are very few specimens known in private collections.
Cheers
Rui

© Rui Nunes 2010


© Rui Nunes 2010

© Rui Nunes 2010



Edited 1 time(s). Last edit at 09/23/2011 05:57AM by Rock Currier.
avatar Re: Best Fluorite - Welcome
September 23, 2011 05:59AM
Rui,

Do you have access to any of the Photoshop programs? They can make a big difference in how the pictures you take look. See your image above which I photoshoped only by lightening the shadows a little. It makes a big difference in how the images look. The image you submitted I would likely not include in best minerals, but if you lighted up the image you submitted, I probably would.

Rock Currier
Crystals not pistols.



Edited 1 time(s). Last edit at 09/23/2011 06:01AM by Rock Currier.
Re: Best Fluorite - Welcome
September 23, 2011 08:25AM
pt    
Rock, thks! I'll do that later.
Rui
avatar Re: Best Fluorite - Welcome
September 23, 2011 11:19AM
pt    
Hi,
another one from the same locality... (Vale das Gatas, Portugal)





Edited 2 time(s). Last edit at 12/12/2011 12:17AM by Pedro Alves.
Anonymous User
Re: Best Fluorite - Welcome
September 23, 2011 11:47AM
As many of you know by now my area of specialty is oxides, sulphides, sulphosalts and native elements. To add colour to my collection I decided to start getting a few fluorites, calcites and other colourful minerals. I have about a dozen fluorites so far – all Chinese.

The piece shown below is an extraordinary fluorite in my opinion – incredibly gemmy. It has the most amazing green colour and is absolutely transparent, so much so that you can see right through the specimen. You will notice in the photo that part of the brick wall can be seen through some of the crystals. The crystals are large cubes with beautiful beveled edges. It hails from the Xianghuapu Mine, Xianghualing Sn-Polymetallic Field, Linwu County, Chenzhou Prefecture, Hunan Province, China. It is 20 x 9 x 8 cm and the largest crystal is 7cm on edge. It is really a “chunk” of a much larger piece, which makes you wonder how large was the larger piece? I did not pay for this particular piece – it was free. I organized a few EDS tests for a few unknowns that were baffling my Chinese vendor friends and as a reward they gave it to me - sweet!

I suppose many may ask why Chinese Fluorites? The answer is simple -the cost. I could not afford equivalent American or European pieces, and at the moment Chinese material is as common as muck, but give it a decade or two and they will be as rare as the proverbial “hens teeth.”






Edited 1 time(s). Last edit at 09/23/2011 11:48AM by SAMUEL FAIRFIELD.
Re: Best Fluorite - Welcome
September 23, 2011 08:59PM
pt    
Done !

© Rui Nunes 2010
© Rui Nunes 2010
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