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FMF - Friends of Minerals Forum, discussion and message board
The place to share your mineralogical experiences


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Newest topics and users posts
24 Jun-08:35:32 Re: gold? (Kevin Schofield)
24 Jun-06:28:25 Re: collection of firmo espinar (Firmo Espinar)
24 Jun-06:20:27 Re: gold? (Firmo Espinar)
23 Jun-22:54:25 Sainte-marie-aux-mines 2022 - first official day (Jordi Fabre)
23 Jun-21:05:36 Gold? (Duane01)
23 Jun-18:57:56 Re: collection of michael shaw (Michael Shaw)
23 Jun-15:10:26 Re: collection of michael shaw (Silvia)
23 Jun-12:22:16 Re: collection of volkmar stingl (Volkmar Stingl)
23 Jun-09:39:11 Re: collection of michael shaw (Michael Shaw)
22 Jun-17:40:56 The mizunaka collection - quartz (Am Mizunaka)
22 Jun-15:48:39 Romania - silvia's collection (Silvia)
22 Jun-13:14:20 Re: please help id, maybe pyrite? (Dirk Black)
22 Jun-13:12:02 Re: please help id, maybe pyrite? (Vic Rzonca)
22 Jun-13:10:48 Re: please help id, maybe pyrite? (Dirk Black)
22 Jun-13:09:16 Re: please help id, maybe pyrite? (Peter Megaw)
22 Jun-13:02:57 Please help id, maybe pyrite? (Dirk Black)
22 Jun-02:39:18 Re: sainte-marie-aux-mines 2022 - day one (Marticv)
22 Jun-02:36:16 Re: sainte-marie-aux-mines 2022 - the reunion (Marticv)
22 Jun-02:33:44 Re: sainte-marie-aux-mines 2022 - the reunion (Marticv)
21 Jun-15:09:34 Re: the mizunaka collection- ottens china ii book plus updated image (Am Mizunaka)
21 Jun-13:46:37 Re: collection of volkmar stingl (Volkmar Stingl)
21 Jun-06:08:06 Re: collection of volkmar stingl (Tobi)
21 Jun-04:56:35 Re: the mizunaka collection- ottens china ii book plus updated image (Tobi)
21 Jun-02:42:00 Re: sainte-marie-aux-mines 2022 - getting back together (Marticv)
21 Jun-00:14:17 Re: the mizunaka collection- ottens china ii book plus updated image (Am Mizunaka)

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Author Message
  Topic: In memoriam - Eloïsa Artola (Elo)
Roger Warin

Replies: 5
Views: 397

PostForum: In Memoriam   Posted: Jun 15, 2022 14:48   Subject: Re: In memoriam - Eloïsa Artola (Elo)
I didn't know Eloise, but her smile says so much.
My condolences to Joaquim and the family.
  Topic: The Mizunaka Collection
Roger Warin

Replies: 1962
Views: 1571735

PostForum: Collection photos and Collector's page   Posted: Jun 13, 2022 04:14   Subject: Re: The Mizunaka Collection
Never seen such a development.
  Topic: Elbaite, ending moor's head
Roger Warin

Replies: 9
Views: 1072

PostForum: Minerals and Mineralogy   Posted: Jun 11, 2022 16:16   Subject: Re: Elbaite, ending moor's head
John,
I dont share this point of view.
The Moor's head is typically at the top of the crystal.
In addition, the origin of the cations which compensate for the negative charges of the stacking of th ...
  Topic: Elbaite, ending moor's head
Roger Warin

Replies: 9
Views: 1072

PostForum: Minerals and Mineralogy   Posted: Jun 11, 2022 04:27   Subject: Re: Elbaite, ending moor's head
Thanks a lot Johan,
The reference looks good.
I tried to create a ResearchGate account.
The interrogation is military. I had to prove that I was the author of my publications, the first of which da ...
  Topic: New generation for picture - Ploum
Roger Warin

Replies: 1374
Views: 1304137

PostForum: Collection photos and Collector's page   Posted: Jun 09, 2022 09:24   Subject: Re: New generation for picture - Ploum
Very well. It's good news.
Because I believe that your photos undergo a subtle assembly that gives them this personality, like the minerality of the terroir imprints its character on the wine, withou ...
  Topic: New generation for picture - Ploum
Roger Warin

Replies: 1374
Views: 1304137

PostForum: Collection photos and Collector's page   Posted: Jun 09, 2022 06:36   Subject: Re: New generation for picture - Ploum
The perfection of the minerals, the excellence of the pictures.
Can we take lessons?
Roger.
  Topic: New generation for picture - Ploum
Roger Warin

Replies: 1374
Views: 1304137

PostForum: Collection photos and Collector's page   Posted: May 31, 2022 13:06   Subject: Re: New generation for picture - Ploum
Fantastique ! Merci.
  Topic: How long does it take for a crystal to form?
Roger Warin

Replies: 13
Views: 816

PostForum: Minerals and Mineralogy   Posted: May 30, 2022 15:33   Subject: Re: How long does it take for a crystal to form?
Hello,

The chance of your exchanges presents me with a subject that fascinates me.
I'm not just a keen mineral collector, but also a chemist, which seems rare on the Fabre’s FMF.
I totally agree ...
  Topic: Need help identifying this rock
Roger Warin

Replies: 10
Views: 793

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: May 21, 2022 07:25   Subject: Re: Need help identifying this rock
Hello,

This thing is fun to watch.
If I thought like an alien, I would say, it's a chondrite...
In fact these small spheres seem glassy and set in a sort of plaster.
Am I wrong?
  Topic: Calcite in Malkhan elbaite
Roger Warin

Replies: 8
Views: 654

PostForum: Minerals and Mineralogy   Posted: May 19, 2022 14:00   Subject: Re: Calcite in Malkhan elbaite
Hello everyone, Jesse,

Sorry, HCl has no action on this mineral.
It is difficult to do tests for hardness, etc., given the texture of the sheaves.
I nevertheless made macrophotos with the binocul ...
  Topic: Calcite in Malkhan elbaite
Roger Warin

Replies: 8
Views: 654

PostForum: Minerals and Mineralogy   Posted: May 19, 2022 00:26   Subject: Re: Calcite in Malkhan elbaite
Hello Jesse,
Your answer sounds pretty good to me. I doubted those sheafing crystals were calcite. I will do the hydrogen chloride test.
The names of the minerals were given by the dealer.
Thank yo ...
  Topic: Calcite in Malkhan elbaite
Roger Warin

Replies: 8
Views: 654

PostForum: Minerals and Mineralogy   Posted: May 18, 2022 13:56   Subject: Calcite in Malkhan elbaite
Hello,
Here is a specimen from Malkhan, with the elbaite as a signature.
Crystals with a spindle habit are calcite.
I didn't know this deposit had any.
Is it correct ?
Don't tell me to put a drop ...
  Topic: Elbaite, ending moor's head
Roger Warin

Replies: 9
Views: 1072

PostForum: Minerals and Mineralogy   Posted: Apr 19, 2022 04:28   Subject: Elbaite, ending moor's head
Hello,
The island of Elba is of course the type-locality of elbaite.
It still often happens that its top is black or very dark brown in color.
In France, this ending is called "Tête de Maure&q ...
  Topic: Jade, chalcedony or????
Roger Warin

Replies: 7
Views: 982

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Apr 09, 2022 07:15   Subject: Re: Jade, chalcedony or????
Hello,
My question:
I have read that in chalcedonies and in agates, the quartz microneedles have a dimension between 50 and 100 nm.
In addition another phase of SiO2 is present = moganite (not bery ...
  Topic: Unusual habit for Pyrite.
Roger Warin

Replies: 28
Views: 2860

PostForum: Minerals and Mineralogy   Posted: Mar 23, 2022 09:13   Subject: Re: Unusual habit for Pyrite.
Hello,
Can we consider the measurement of angles between edges as long as the face is perpendicular to the axis of the lens?
  Topic: Formicaite. Beta-formicaite & alpha-Ca-formate. Mineral or not? - (39)
Roger Warin

Replies: 8
Views: 1321

PostForum: Featured Columns of FMF   Posted: Mar 20, 2022 09:02   Subject: Re: Formicaite. Beta-formicaite & alpha-Ca-formate. Mineral or not? – (39)
Hello Alfredo, Cesar, Jordi,

Thank you for your feedback.
But I remain a real geologist at heart.
I am opposed to the extension of the nomenclature to artificial inorganic and organic species, be ...
  Topic: Unknown metallic mineral
Roger Warin

Replies: 12
Views: 1277

PostForum: What is it? - Where is it from?   Posted: Mar 17, 2022 14:16   Subject: Re: Unknown metallic mineral
It's an epitaxy of rutile
  Topic: Conoscopy of elbaite
Roger Warin

Replies: 0
Views: 490

PostForum: Minerals and Mineralogy   Posted: Mar 14, 2022 09:19   Subject: Conoscopy of elbaite
Hello,
A tourmaline section of Mont Ibity (Madagascar), this is not exceptional.
But this one is seen by transparency with a binocular (panoramic stacking).
I actually took this picture to "pr ...
  Topic: Alleged 'silvers' from Udokan?
Roger Warin

Replies: 13
Views: 3804

PostForum: Off-Topic and Introductions   Posted: Oct 13, 2021 14:21   Subject: Re: Alleged 'silvers' from Udokan?
Hello Jordi,
What amazes me is the morphology of the cubic crystal. It is typically dendritic, which corresponds to rapid crystallization. I think the man is always in a hurry.
  Topic: The Tobi Martin Mineral Collection - (38)
Roger Warin

Replies: 20
Views: 6453

PostForum: Featured Columns of FMF   Posted: Oct 10, 2021 15:01   Subject: Re: The Tobi Martin Mineral Collection - (38)
Hello Tobi,
Your story is poignant with sincerity and passion.
Your conquest of the Mineral World is a lesson for young amateurs.
Do you authorize me to publish it (in French) in my club's magazine ...
 
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