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Newest topics and users posts
27 Oct-23:47:31 Re: collection of volkmar stingl (Volkmar Stingl)
27 Oct-15:12:24 Re: fluorite panasqueira style - silvia's collection (Silvia)
27 Oct-13:56:31 Re: collection of fiebre verde (muzo #815) (Fiebre Verde)
27 Oct-10:58:59 Re: old lead ingots with mine of our lady of montserrat (James Catmur)
27 Oct-09:36:47 Re: clinoclase, boleo, baja california, mexico ? (Jesse Fisher)
27 Oct-08:51:35 Re: clinoclase, boleo, baja california, mexico ? (Cfrench58)
27 Oct-05:55:30 Re: fluorite panasqueira style - silvia's collection (Tobi)
27 Oct-04:53:40 Re: clinoclase, boleo, baja california, mexico ? (Alfredo)
27 Oct-04:45:34 Re: clinoclase, boleo, baja california, mexico ? (Tobi)
27 Oct-04:13:20 Old lead ingots with mine of our lady of montserrat (Lisa_anne)
26 Oct-23:40:11 The mizunaka collection - beryl (Am Mizunaka)
26 Oct-22:13:25 Re: don lum collection (Don Lum)
26 Oct-19:01:10 Clinoclase, boleo, baja california, mexico ? (Cfrench58)
26 Oct-18:23:14 Re: collection of ras (Robert Seitz)
26 Oct-18:16:36 Fluorite panasqueira style - silvia's collection (Silvia)
26 Oct-18:07:12 Re: silvia's collection - schorl/dravite panasqueira (Silvia)
26 Oct-15:59:54 Re: black, metallic, yellow oxide? (Deadhead)
26 Oct-15:48:38 Re: collection of sante celiberti (Sante Celiberti)
26 Oct-15:46:41 Re: munich show (mineralientage) 2021 (Fiebre Verde)
26 Oct-15:46:19 Re: munich show (mineralientage) 2021 (Alfredo)
26 Oct-15:30:39 Re: munich show (mineralientage) 2021 (Sante Celiberti)
26 Oct-15:03:00 Re: munich show (mineralientage) 2021 (Fiebre Verde)
26 Oct-11:03:37 Re: please help identify the composition of this granite (James Catmur)
26 Oct-10:08:36 Re: please help identify the composition of this granite (Peter Lemkin)
26 Oct-09:58:54 Re: please help identify the composition of this granite (Tsaintonge)

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  Topic: Reminiscences of a Mineralogist by Arthur Montgomery
John S. White

Replies: 2
Views: 1233

PostForum: Mineralogical Literature   Posted: Apr 08, 2021 17:25   Subject: Re: Reminiscences of a Mineralogist by Arthur Montgomery
As the founder of the journal The Mineralogical Record I should point out that Dr. Montgomery was instrumental in the founding of the Record. He personally financed the start of the journal and witho ...
  Topic: Reminiscences of a Mineralogist by Arthur Montgomery
John S. White

Replies: 2
Views: 1233

PostForum: Mineralogical Literature   Posted: Apr 07, 2021 04:22   Subject: Reminiscences of a Mineralogist by Arthur Montgomery
Marie Huizing, the editor of Rocks & Minerals, very kindly agreed to publish the original version of this letter in that journal. And Jordi has generously agreed to allow me to post a similar ver ...
  Topic: Natural or man-made?
John S. White

Replies: 6
Views: 1935

PostForum: What is it? - Where is it from?   Posted: Mar 13, 2021 09:24   Subject: Re: Natural or man-made?
It is nearly impossible to tell natural vs. manmade from photos, even very good ones like yours. However in my opinion I have to say that your turquoise pendant appears very natural.
  Topic: Hester Diamond Auction
John S. White

Replies: 11
Views: 4728

PostForum: Mineral Shows   Posted: Jan 25, 2021 10:18   Subject: Re: Hester Diamond Auction
Perhaps you can fault her curator John Trinchillo
  Topic: Pyrite with bubble-like growths
John S. White

Replies: 21
Views: 6863

PostForum: Minerals and Mineralogy   Posted: Jan 03, 2021 06:06   Subject: Re: Pyrite with bubble-like growths
This may not be the same phenomenon but viewers may find it interesting just the same. The termination of a fluorapatite crystal from Panasqueira, Portugal. 4 cm across.
  Topic: Proposed new system for classifying minerals
John S. White

Replies: 15
Views: 5257

PostForum: Minerals and Mineralogy   Posted: Dec 28, 2020 14:43   Subject: Re: Proposed new system for classifying minerals
I, for one, find it hard to contain my skepticism, especially in the absence of some examples of what minerals in such a system would look like. I feel sure that if a survey were taken of all who can ...
  Topic: Rutile locality?
John S. White

Replies: 18
Views: 5730

PostForum: Mines and Mineral Localities   Posted: Dec 19, 2020 12:04   Subject: Brumado, Bahia, Brazil
I am surprised that so many possible localities have been proposed yet what in my view are obvious candidates that have not, I think, been mentioned - Hiddenite, North Carolina and Brumado, Bahia, Bra ...
  Topic: Odd textures on this large beryl
John S. White

Replies: 10
Views: 4040

PostForum: Minerals and Mineralogy   Posted: Nov 24, 2020 14:53   Subject: Re: Odd textures on this large beryl
Definitely etching. I differ with Bob however as I prefer to think the smooth faces were protected. They were either in contact with another crystal or they were lying upon a surface that shielded the ...
  Topic: Very steep rhombohedral calcite?
John S. White

Replies: 14
Views: 5122

PostForum: Minerals and Mineralogy   Posted: Oct 05, 2020 10:32   Subject: Re: Very steep rhombohedral calcite?
The tall sloping faces are scalenohedron faces. The termination at the top is the flattened rhombohedron. Simple.
  Topic: Please help! Is this "Ocean Jasper" Real or Dyed/Fake/Enhanced?
John S. White

Replies: 14
Views: 8511

PostForum: Incorrect classification and fakes   Posted: Sep 12, 2020 05:47   Subject: Re: Please help! Is this "Ocean Jasper" Real or Dyed/Fake/Enhanced?
For heavens sake wait until you receive the specimens so you can photograph them. Otherwise you can speculate all day!
  Topic: Please help! Is this "Ocean Jasper" Real or Dyed/Fake/Enhanced?
John S. White

Replies: 14
Views: 8511

PostForum: Incorrect classification and fakes   Posted: Sep 01, 2020 05:29   Subject: Re: Please help! Is this "Ocean Jasper" Real or Dyed/Fake/Enhanced?
Ocean Jasper can indeed look like it has been dyed because it is so varied. I have about a dozen pieces of it in many forms. Just for fun I am attaching one of my specimens even without seeing yours ...
  Topic: Mercedes cross in fluorite
John S. White

Replies: 9
Views: 4560

PostForum: Minerals and Mineralogy   Posted: Jun 22, 2020 09:38   Subject: Re: Mercedes cross in fluorite
No addition to the discussion but just sharing a photo of a (111) cleavage in a Cave in Rock, Hardin Co., Illinois fluorite in my collection. 4.5 cm across.
  Topic: Can somebody recommend a sweet book on Crystallography?
John S. White

Replies: 13
Views: 7950

PostForum: Mineralogical Literature   Posted: May 21, 2020 07:20   Subject: Re: Can somebody recommend a sweet book on Crystallography?
I can strongly recommend Dana's Textbook of Mineralogy, but no photos. As mentioned elsewhere there are thousands of photos on-line, especially on Mindat.com.
  Topic: Pink amethyst?
John S. White

Replies: 7
Views: 6641

PostForum: Mineralogical Literature   Posted: May 03, 2020 11:10   Subject: Pink amethyst?
If anyone is looking for evidence that the rondinaire (according to Jordi Fabre, this the word for curmudgeon in the Catalan language and is a term that he has applied to me) has gotten too old to con ...
  Topic: Braking Bad.
John S. White

Replies: 18
Views: 8235

PostForum: What is it? - Where is it from?   Posted: Apr 13, 2020 10:36   Subject: Re: Braking Bad.
Well done Vic. I did not expect you to reveal any of your crime scenes, just the answer, yes some working quarries. I am sure that you do not care to risk prosecution. That was quite a reasonable l ...
  Topic: Braking Bad.
John S. White

Replies: 18
Views: 8235

PostForum: What is it? - Where is it from?   Posted: Apr 13, 2020 09:15   Subject: Re: Braking Bad.
Hi Vic:

Delighted to see you getting out at this particular time and, especially, having such great success in finding wonderful minerals. Good for you my friend. Wish I could see the mystery mi ...
  Topic: Is this hematite
John S. White

Replies: 14
Views: 7763

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Mar 14, 2020 05:34   Subject: Re: Is this hematite
A sharper photo might help but it is difficult to identify positively something like your object from even a good photo. The red streak strongly suggests hematite as does the metallic appearance on a ...
  Topic: Could someone tell what this is, is it man made?
John S. White

Replies: 7
Views: 7626

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Mar 08, 2020 08:52   Subject: Re: could someone tell what this is, is it man made?
My impression is that it is a piece of banded sedimentary rock. The banding is far too regular for it to be a gneiss. The triangular shape is pure coincidence.
  Topic: Tucson Show 2020
John S. White

Replies: 104
Views: 89458

PostForum: News about shows   Posted: Jan 20, 2020 06:33   Subject: Re: Tucson Show 2020
Hi Laura:

Would love to join you but I don't get to Tucson until Feb. 1. Very sorry.

John
  Topic: Tucson Show 2020
John S. White

Replies: 104
Views: 89458

PostForum: News about shows   Posted: Jan 19, 2020 11:21   Subject: Re: Tucson Show 2020
Who is the "US" that we are asked to join?
 
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