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Newest topics and users posts
23 Jul-18:40:43 Re: black, metallic, yellow oxide? (Bob Carnein)
23 Jul-17:36:31 Re: black, metallic, yellow oxide? (Linus)
23 Jul-17:34:00 Re: black, metallic, yellow oxide? (Linus)
23 Jul-09:37:34 Re: help identify this rock. Sapphire?? (James Catmur)
23 Jul-09:03:02 Re: unknown mineral from pikes peak pegmatite (Bob Morgan)
23 Jul-07:27:50 Re: black, metallic, yellow oxide? (Susan Robinson)
23 Jul-02:23:46 Re: mineral talks live - episode 41 - alan hart - ceo; gem-a, london, england, united king (Tobi)
23 Jul-02:20:06 Re: hillman hall of minerals and gems (Tobi)
23 Jul-02:15:45 Re: black, metallic, yellow oxide? (Tobi)
23 Jul-02:03:58 Re: help identify this rock. Sapphire?? (Tobi)
22 Jul-22:56:37 Re: help identify this rock. Sapphire?? (Steveb)
22 Jul-22:46:39 Re: help identify this rock. Sapphire?? (Gentrydodd)
22 Jul-22:44:53 Re: help identify this rock. Sapphire?? (Volkmar Stingl)
22 Jul-22:41:14 Help identify this rock. Sapphire?? (Gentrydodd)
22 Jul-22:05:14 Re: help identify this rock (Alexsolis)
22 Jul-22:00:01 Re: help identify this rock (Matt_zukowski)
22 Jul-20:07:46 Help identify this rock (Alexsolis)
22 Jul-16:58:25 Re: black, metallic, yellow oxide? (Linus)
22 Jul-15:30:24 Re: black, metallic, yellow oxide? (Linus)
22 Jul-15:20:13 Re: black, metallic, yellow oxide? (Linus)
22 Jul-12:43:41 Re: hillman hall of minerals and gems (Riccardo Modanesi)
22 Jul-09:56:35 Re: unknown mineral from pikes peak pegmatite (Bob Carnein)
22 Jul-03:47:30 Re: black, metallic, yellow oxide? (Tobi)
21 Jul-20:37:55 Re: black, metallic, yellow oxide? (Linus)
21 Jul-20:28:03 Re: black, metallic, yellow oxide? (Pete Richards)

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

Replies: 2
Views: 919

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: 919

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: 1521

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: 3958

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: 5629

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: 4544

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: 4736

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: 3498

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: 4394

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: 7284

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: 7284

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: 3953

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: 7175

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: 5995

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: 7597

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: 7597

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: 7278

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: 7308

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: 83032

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: 83032

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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