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Newest topics and users posts
02 Jul-14:07:28 Re: collection of michael shaw (Michael Shaw)
02 Jul-13:38:52 Cuprite on calcite from congo d. R. / #mvm (minerals - virtual museum) collection (Jordi Fabre)
02 Jul-10:23:30 Re: libyan desert glass structure (Craig Hagstrom)
02 Jul-10:06:48 Re: libyan desert glass structure (Marco Campos-venuti)
02 Jul-09:29:48 Re: libyan desert glass structure (Craig Hagstrom)
02 Jul-09:12:17 Re: libyan desert glass structure (Marco Campos-venuti)
02 Jul-09:02:38 Re: libyan desert glass structure (Craig Hagstrom)
02 Jul-08:49:56 Re: libyan desert glass structure (Marco Campos-venuti)
02 Jul-06:09:25 Re: libyan desert glass structure (James Catmur)
01 Jul-14:47:07 Re: libyan desert glass structure (Alfredo)
01 Jul-09:55:00 Re: libyan desert glass structure (Craig Hagstrom)
01 Jul-05:05:41 Re: libyan desert glass structure (Roger Warin)
01 Jul-01:07:57 The mizunaka collection - elbaite (Am Mizunaka)
30 Jun-21:33:59 Re: some rare phosphates from the democratic republic of congo and zimbabwe (Roger Warin)
30 Jun-14:52:04 Re: libyan desert glass structure (Craig Hagstrom)
30 Jun-14:39:38 Re: libyan desert glass structure (Marco Campos-venuti)
30 Jun-13:55:05 Re: tourmaline namibia? (Izak)
30 Jun-13:07:14 Re: libyan desert glass structure (Craig Hagstrom)
30 Jun-12:24:05 Re: libyan desert glass structure (Marco Campos-venuti)
30 Jun-12:07:00 Re: gwindel skutterudite? (Marco Campos-venuti)
30 Jun-11:52:28 Re: libyan desert glass structure (Craig Hagstrom)
30 Jun-08:17:07 Re: collection of michael shaw (Michael Shaw)
30 Jun-07:28:28 Re: the mim museum in beirut, lebanon (Mim Museum)
30 Jun-03:02:46 Re: some rare phosphates from the democratic republic of congo and zimbabwe (Knut Eldjarn)
29 Jun-18:12:45 Azurite (Silvia)

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The information provided within this Forum about localities is only given to allow reference to them. Any visit to any of the localities requires you to obtain full permission and relevant information prior to your visit. FMF is strictly against any illicit activities related to collecting minerals.
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  Topic: Help to identify a find
Josele

Replies: 9
Views: 6055

PostForum: What is it? - Where is it from?   Posted: May 23, 2024 14:17   Subject: Re: Help to identify a find
Hi Silvia, welcome to FMF.

Really looks like anthropogenic silicon carbide.
  Topic: Provide Miller indices in practice please
Josele

Replies: 11
Views: 10595

PostForum: Minerals and Mineralogy   Posted: May 21, 2024 17:26   Subject: Re: Provide Miller indices in practice please
Miller indices determination is not an identification method but just a witty way to name crystal faces.

Knowing the crystal system of a sample in addition to hardness, density, streak color, kind ...
  Topic: Mineral identification tips
Josele

Replies: 9
Views: 6869

PostForum: Minerals and Mineralogy   Posted: May 18, 2024 09:12   Subject: Re: Mineral identification tips
I tried to explain how Miller indices work here:
https://www.foro-minerales.com/forum/viewtopic.php?p=151654#151654 (in Spanish).
Maybe this can help...
  Topic: Fluorite twin mistery
Josele

Replies: 2
Views: 3326

PostForum: What is it? - Where is it from?   Posted: Apr 03, 2024 16:58   Subject: Re: Fluorite twin mistery
Just commenting that the only fluorite fluorescing red that I remember is Mexican.
  Topic: Trying to find information on rose/pink quartz and tourmaline associations.
Josele

Replies: 17
Views: 20518

PostForum: Minerals and Mineralogy   Posted: Mar 29, 2024 09:43   Subject: Re: Trying to find information on rose/pink quartz and tourmaline associations.
Indicolite and rose quartz are well known in Parun pegmatite field, Nuristan, Afghanistan, although rarely seen together.

https://www.mindat.org/loc-9019.html
  Topic: Tucson 2024 - It's started!
Josele

Replies: 84
Views: 64369

PostForum: News about Shows   Posted: Jan 25, 2024 14:15   Subject: Re: Tucson 2024 - It's started!
Thanks for the excellent report Bob, you must be in shape to endure these long walks in Tucson.
By the way, the aquamarine and fluorite pieces labeled above as from Alchuri
Mineral: mainly aquamarin ...
  Topic: I want to know the sample
Josele

Replies: 21
Views: 15794

PostForum: What is it? - Where is it from?   Posted: Dec 09, 2023 13:21   Subject: Re: I want to know the sample
Such as what tests are required
I would say that the first thing is to discern between siliceous or carbonate material. Perhaps you can repeat the hardness test by trying to scratch a bottle glass be ...
  Topic: Please identify.
Josele

Replies: 8
Views: 8283

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Jan 11, 2023 09:11   Subject: Re: Please identify.
I would say all three are glass (lots of bubbles), not natural.
  Topic: Any Ideas?
Josele

Replies: 22
Views: 23316

PostForum: FOR BEGINNERS: What is it? Where is it from?   Posted: Dec 29, 2022 15:08   Subject: Re: Any Ideas?
Looks like a water worn piece of colorless corundum found in a placer deposit. Measured SG fits corundum and trigons on basal pinacoid faces also fits.

Is not so rare find relocated specimens far a ...
  Topic: John Attard stolen specimens
Josele

Replies: 1
Views: 24613

PostForum: Reporting thefts and disappearances   Posted: Nov 16, 2022 18:21   Subject: John Attard stolen specimens
Sad news but not so much, no one has died. It is about a robbery two weeks ago at John Attard's family home in San Diego, California.

Contact information and stolen specimens can be seen here: http ...
  Topic: Locality for a Väyrynenite?
Josele

Replies: 13
Views: 79371

PostForum: Improving the FMF Data Base of localities   Posted: Oct 20, 2022 10:32   Subject: Re: Locality for a Väyrynenite?
No way to find any reference of Lolu Dahku Mine. I suspect it could be one of the many mines near Shengus which are well known for vayrynenite finds.
In any case if it is in Roundu Valley, from 2019 ...
  Topic: Twinned Topaz?
Josele

Replies: 8
Views: 12232

PostForum: What is it? - Where is it from?   Posted: Jul 01, 2022 07:43   Subject: Re: Twinned Topaz?
Have never read about topaz twinning, so I would tend to distrust.

Yannick, in addition to the hardness you can easily check density to confirm topaz: Specific Gravity Test.
  Topic: Red fluorescence in Fluorite
Josele

Replies: 13
Views: 25308

PostForum: Minerals and Mineralogy   Posted: Jun 28, 2022 17:51   Subject: Re: Red fluorescence in Fluorite
Looks more like La Collada, to meBerbes sample with a moderated blue fluorescence concentrated at the edges and a slight red fluorescence in some interior layers:

James, from long time ago I had th ...
  Topic: Calcite in Malkhan elbaite
Josele

Replies: 8
Views: 8148

PostForum: Minerals and Mineralogy   Posted: May 19, 2022 12:23   Subject: Re: Calcite in Malkhan elbaite
Another vote for plagioclase.

Although uncommon, calcite in pegmatite can occur indeed.
  Topic: Is this a ruby?
Josele

Replies: 12
Views: 10444

PostForum: What is it? - Where is it from?   Posted: May 09, 2022 08:26   Subject: Re: Is this a ruby?
... I wonder if it is a ruby.
I would say that it is common corundum. To properly merit the ruby title it should be transparent, gem quality.
But as the term ruby indicates a corundum variety and va ...
 
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