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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 1071 matches |
| Author | Message |
|---|---|
 Topic: Kimberlite and Diamond? |
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| Roger Warin Replies: 7 Views: 723 |
 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: 723 |
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: 356 |
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: 336 |
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: 1175 |
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: 4403 |
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: 7615 |
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: 3927 |
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: 3927 |
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: 3927 |
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: 3927 |
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: 2984 |
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: 9602 |
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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| Topic: Fluorite crystallography? |
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| Roger Warin Replies: 27 Views: 9602 |
Forum: Minerals and Mineralogy Posted: Nov 27, 2023 10:12 Subject: Re: Fluorite crystallography? |
| sorry
Rhombododecahedron as copper. |
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| Topic: Fluorite crystallography? |
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| Roger Warin Replies: 27 Views: 9602 |
Forum: Minerals and Mineralogy Posted: Nov 27, 2023 10:05 Subject: Re: Fluorite crystallography? |
| cuboctahedron
Cheers Tobi. |
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| Topic: Munich Show (Mineralientage) 2023 |
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| Roger Warin Replies: 16 Views: 11932 |
Forum: News about Shows Posted: Nov 26, 2023 05:29 Subject: Re: Munich Show (Mineralientage) 2023 |
| Hello Jordi, and all,
Silver always captivates the public. Why? Because this element is rarely isolated to this extent in rocks or because it requires a lot of money to acquire it (this is in fact a ... |
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| Topic: Dissolution enables dolomite crystal growth near ambient conditions |
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| Roger Warin Replies: 9 Views: 4428 |
Forum: Mineralogical Literature Posted: Nov 24, 2023 16:37 Subject: Re: Dissolution enables dolomite crystal growth near ambient conditions |
| The Marche-les-Dames dolomite deposit is one of the purest in the world. However, the composition of the rock is not homogeneous. | |
| Topic: Dissolution enables dolomite crystal growth near ambient conditions |
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| Roger Warin Replies: 9 Views: 4428 |
Forum: Mineralogical Literature Posted: Nov 24, 2023 08:03 Subject: Re: Dissolution enables dolomite crystal growth near ambient conditions |
| This reminds me of the opposite sequence in an Oregon lake! | |
| Topic: Curating your collection |
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| Roger Warin Replies: 11 Views: 6467 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: Nov 18, 2023 10:43 Subject: Re: Curating your collection |
| I don't worry about the future of my collection, I will donate it to a museum. This will be my grave!
It is difficult to accept that the repurchase is done at 10% of the value, only for the best piec ... |
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| Topic: Munich Show (Mineralientage) 2023 |
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| Roger Warin Replies: 16 Views: 11932 |
Forum: News about Shows Posted: Nov 06, 2023 10:04 Subject: Re: Munich Show (Mineralientage) 2023 |
| Hello,
I visited the Mineralientage every year since 1977, then in the City center, more festive, until 2008 (I was that young !). In total around forty visits. In my memory, Munich 2019 was colossa ... |
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