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A general guide for using the Forum with some rules and tips
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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| Search found 1078 matches |
| Author | Message |
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 Topic: Vorobyevite, a 7th variety of beryl |
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| Roger Warin Replies: 2 Views: 272 |
 Forum: Minerals and Mineralogy Posted: Jul 23, 2024 16:45 Subject: Vorobyevite, a 7th variety of beryl |
| Hello,
Here is a crystal of vorobyevite, a very rare variety of beryl. The locality is Lipovka mine (Lipovskaya mine; Lipovka pegmatite field, Rezh district, Central Urals, Ural region, Russia. Ber ... |
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| Topic: Inclusion of Pezzotaite in Quartz |
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| Roger Warin Replies: 3 Views: 738 |
Forum: Minerals and Mineralogy Posted: Jul 08, 2024 15:15 Subject: Re: Inclusion of Pezzotaite in Quartz |
| Hello,
About pezzotaite. James Catmur said; Any Madagascar experts out there? By the way, have you asked ChatGPT this question? Among the mineral enthusiasts are retired former scientists. I m ... |
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| Topic: Inclusion of Pezzotaite in Quartz |
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| Roger Warin Replies: 3 Views: 738 |
Forum: Minerals and Mineralogy Posted: Jun 09, 2024 07:47 Subject: Inclusion of Pezzotaite in Quartz |
| Hello,
Photographing inclusions is not easy. When the stone is further cut, internal reflections are annoying. However, this Malagasy quartz contains an interesting inclusion: Pezzotaite. What do y ... |
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| Topic: is this a rhyolite matrix with calcite and smoky quartz? |
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| Roger Warin Replies: 2 Views: 802 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Jun 01, 2024 22:11 Subject: Re: is this a rhyolite matrix with calcite and smoky quartz? |
| Hello,
Here is an attempt at an answer. Rhyolite is an extrusive igneous rock with a very high silica content. Your nodule is an anomaly of detrital sedimentary rocks. Your rock is a siliceous nod ... |
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| Topic: Provide Miller indices in practice please |
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| Roger Warin Replies: 11 Views: 1441 |
Forum: Minerals and Mineralogy Posted: May 22, 2024 23:56 Subject: Re: Provide Miller indices in practice please |
| About Miller's indices.
Crystal morphology is one aspect of the collection. I love tourmalines, the most beautiful cation bins in mineralogy, because the structure is rather imposed by the anions. ... |
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| Topic: European Mineral and Mining Museums |
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| Roger Warin Replies: 11 Views: 23344 |
Forum: Worlwide Museums & Visits to Museums and private collections Posted: May 10, 2024 22:14 Subject: Re: European Mineral and Mining Museums |
| Hello,
There is obviously the “Natur Musée” or National Museum of Natural History of Luxembourg. It is located in the Latin Quarter of the city, at the foot of the cliff where the banks are located. ... |
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| Topic: Tsumeb Unknown |
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| Roger Warin Replies: 3 Views: 1502 |
Forum: What is it? - Where is it from? Posted: Apr 19, 2024 13:49 Subject: Re: Tsumeb Unknown |
| I propose cerussite. You can't see the crystals well.
I doubt duftite. |
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| Topic: Kimberlite and Diamond? |
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| Roger Warin Replies: 7 Views: 2540 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Apr 06, 2024 07:31 Subject: Re: Kimberlite and Diamond? |
| Hello,
Munich is a magical city in many ways. I have visited it around forty times since 1977 to admire the Mineralientage Muenchen exhibition by Johannes Keilmann. The exhibition alone was worth t ... |
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| Topic: Kimberlite and Diamond? |
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| Roger Warin Replies: 7 Views: 2540 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Apr 06, 2024 04:04 Subject: Re: Kimberlite and Diamond? |
| An easy first test: see if the white fluoresces yellow. | |
| Topic: Selective deposit on tourmaline |
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| Roger Warin Replies: 1 Views: 1122 |
Forum: What is it? - Where is it from? Posted: Apr 03, 2024 13:05 Subject: Selective deposit on tourmaline |
| A beautiful enigma.
This tourmaline was found in Anjanabonoina, in the Betafo District, west of Antsirabe, where you can only go on foot. It is the Schorl species, one of the most abundant in the la ... |
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| Topic: Origin of an albite-epidote thumbnail |
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| Roger Warin Replies: 1 Views: 1143 |
Forum: What is it? - Where is it from? Posted: Mar 31, 2024 23:41 Subject: Origin of an albite-epidote thumbnail |
| Epidote / albite
This thumbnail specimen seems typical of the surroundings of Col Pelvas in St Paul sur Ubaye in the Alpes-de-Haute-Provence. Do you think so too? Please give me your opinion. |
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| Topic: Contribution Dr. Menor-Salván - Life and Minerals: the Machów mine (Poland) - (45) |
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| Roger Warin Replies: 3 Views: 2360 |
Forum: Featured Columns of FMF Posted: Jan 16, 2024 17:33 Subject: Re: Contribution Dr. Menor-Salván - Life and Minerals: the Machów mine (Poland) - (45) |
| Bravo for opening a window on the unknown of the origin of life.
But the bacteria is already a living being. Like us, it is made of atoms. The great Architect was (and remains) infinitely brilliant ... |
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| Topic: Iron cross twinned Pyrites from Gachalá or from Ubalá? |
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| Roger Warin Replies: 10 Views: 6002 |
Forum: What is it? - Where is it from? Posted: Jan 01, 2024 08:25 Subject: Re: Iron cross twinned Pyrites from Gachalá or from Ubalá? |
| Thank you Jordi for these details.
I modified the “Gachala” label of the specimen purchased in 2019, next to your stand. Obviously this twin is a solitary aggregate. But I think (without being certa ... |
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| Topic: Best wishes / 2023-2024! |
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| Roger Warin Replies: 16 Views: 10813 |
Forum: Comments & Suggestions Posted: Dec 10, 2023 18:22 Subject: Best wishes / 2023-2024! |
| Best wishes for 2024 ! | |
| Topic: Nifontovite |
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| Roger Warin Replies: 8 Views: 5709 |
Forum: Minerals and Mineralogy Posted: Dec 10, 2023 18:05 Subject: Re: Nifontovite |
| Thank you, Peter, for these details.
Nifontovite interests me because for me it represents the unusual victory of boron over silicon. It is an anomaly that I can characterize as Dantesque for a miner ... |
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| Topic: Nifontovite |
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| Roger Warin Replies: 8 Views: 5709 |
Forum: Minerals and Mineralogy Posted: Dec 09, 2023 15:30 Subject: Re: Nifontovite |
| Hello Peter,
I am happy to benefit from your experience. You already helped me with a colemanite. Can I ask a question? The deposit has dimensions of between 500 and 1000 m? My specimen was purc ... |
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| Topic: Nifontovite |
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| Roger Warin Replies: 8 Views: 5709 |
Forum: Minerals and Mineralogy Posted: Dec 09, 2023 15:07 Subject: Re: Nifontovite |
| Hello Bob,
I think you are absolutely right. It must be a twin. Pete, help us. My age, almost 90, gives me immense joy: we are no longer afraid of proposing “crazy” hypotheses when they seem very re ... |
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| Topic: Nifontovite |
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| Roger Warin Replies: 8 Views: 5709 |
Forum: Minerals and Mineralogy Posted: Dec 09, 2023 09:11 Subject: Nifontovite |
| Hello,
This is an unusual mineral for the simple reason that it is only composed of boron without silicon. A window opened in my border freeing my imagination... It is nifontovite, an oxoborate (no ... |
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| Topic: Fluorite Star |
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| Roger Warin Replies: 3 Views: 5857 |
Forum: Minerals and Mineralogy Posted: Nov 28, 2023 09:37 Subject: Fluorite Star |
| Fluorite – Mercedes-Benz Star
Good tools allowed me to take a good photo of this Mercedes star included in a fluorite crystal from Seilles (Huy-Belgium). The crystals of fluorite are sometimes lar ... |
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| Topic: Fluorite crystallography? |
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| Roger Warin Replies: 27 Views: 96871 |
Forum: Minerals and Mineralogy Posted: Nov 27, 2023 10:18 Subject: Re: Fluorite crystallography? |
| Dowty Eric, Richards Peter R. - Mode d’emploi
Shape - A computer program for drawing crystals - Macintosh version 4.0 (1991-1993) |
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