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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 109 matches |
| Author | Message |
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 Topic: Stellerite specimens from Piedra Parada, Mexico |
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| John Betts Replies: 7 Views: 3513 |
 Forum: Minerals and Mineralogy Posted: Feb 21, 2025 12:53 Subject: Re: Stellerite specimens from Piedra Parada, Mexico |
| Thanks for the locality info Peter. Paula Piilonen at the Canadian Museum of Nature is going to test my sample. | |
| Topic: Stellerite specimens from Piedra Parada, Mexico |
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| John Betts Replies: 7 Views: 3513 |
Forum: Minerals and Mineralogy Posted: Feb 19, 2025 13:49 Subject: Stellerite specimens from Piedra Parada, Mexico |
| Has anybody tested the supposed stellerite specimens from Piedra Parada, Mexico?
I suspect the identification is based soley of the spherical morphology, which is typical of stellerite. It is ... |
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| Topic: Who is coming to Mineralientage? |
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| John Betts Replies: 20 Views: 30704 |
Forum: Mineral Shows Posted: Sep 24, 2023 10:21 Subject: Re: Who is coming to Mineralientage? |
| Does anyone know a good restaurant in Munich for truffles? It will be the right time of year... | |
| Topic: 50th Rochester Mineralogical Symposium - April 21-23, 2023 |
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| John Betts Replies: 9 Views: 18380 |
Forum: Mineral Shows Posted: Apr 20, 2023 09:24 Subject: Re: 50th Rochester Mineralogical Symposium - April 21-23, 2023 |
| Here is the schedule beginning Friday:
50th ROCHESTER MINERALOGICAL SYMPOSIUM: THE ERMS 2023! FRIDAY, APRIL 21 – SUNDAY, APRIL 23, 2023 PROGRAM Friday, April 21 8:00 pm Opening – Raymond Mc ... |
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| Topic: Any chance of finding uranium ore in Southeastern USA? |
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| John Betts Replies: 5 Views: 22684 |
Forum: Rockhounding trips Posted: Mar 22, 2023 17:58 Subject: Re: Any chance of finding uranium ore in Southeastern USA? |
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Online purchase may also present challenges, in as much as USPS and the major private package carriers have an aversion to transporting anything that might be a source of radioactivity... Tha ... |
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| Topic: Familiar label style |
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| John Betts Replies: 1 Views: 3188 |
Forum: What is it? - Where is it from? Posted: Jun 18, 2022 14:47 Subject: Re: Familiar label style |
| I suggest asking John Ebner. | |
| Topic: Fluorite on Galena - Locality?? |
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| John Betts Replies: 10 Views: 8285 |
Forum: What is it? - Where is it from? Posted: Mar 28, 2022 09:22 Subject: Re: Fluorite on Galena - Locality?? |
| Might I suggest Dalnegorsk? I think I discern fluorite shapes that come from there - trapezohedral corners on cubes. The galena certainly could be from there.
I agree with you Bob. Twinned galena i ... |
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| Topic: Unusual habit for Pyrite. |
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| John Betts Replies: 28 Views: 26632 |
Forum: Minerals and Mineralogy Posted: Mar 18, 2022 16:50 Subject: Re: Unusual habit for Pyrite. |
| Photos 4 and 5 look like a pyritohedron. | |
| Topic: Fluorite but from where? |
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| John Betts Replies: 4 Views: 4626 |
Forum: What is it? - Where is it from? Posted: Feb 23, 2022 11:24 Subject: Re: Fluorite but from where? |
| I agree with much of above. But the white microcrystals can also be barite or quartz.. A quick test with HCL to check for reaction will verify if it is calcite (fizzes) or quartz/barite (no reaction). | |
| Topic: San Pedro Corralitos unknown |
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| John Betts Replies: 8 Views: 5877 |
Forum: What is it? - Where is it from? Posted: Dec 23, 2021 16:51 Subject: Re: San Pedro Corralitos unknown |
| Under the scope the botryoidal formations show they are brown internally (goethite), but have an overgrowth of blue-black micro-microcrystals (too small to see any details).
I'll just stick with &q ... |
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| Topic: San Pedro Corralitos unknown |
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| John Betts Replies: 8 Views: 5877 |
Forum: What is it? - Where is it from? Posted: Dec 23, 2021 16:38 Subject: Re: San Pedro Corralitos unknown |
| ....what about plattnerite?
Good suggestion Pete. Thanks. |
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| Topic: San Pedro Corralitos unknown |
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| John Betts Replies: 8 Views: 5877 |
Forum: What is it? - Where is it from? Posted: Dec 23, 2021 15:55 Subject: Re: San Pedro Corralitos unknown |
| Mottramite was a good suggestion, but I just checked for reaction to HCL. No reaction which rules out mottramite. Additionally mottramite does not have a black streak. | |
| Topic: San Pedro Corralitos unknown |
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| John Betts Replies: 8 Views: 5877 |
Forum: What is it? - Where is it from? Posted: Dec 23, 2021 15:40 Subject: Re: San Pedro Corralitos unknown |
| Detail photo. | |
| Topic: San Pedro Corralitos unknown |
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| John Betts Replies: 8 Views: 5877 |
Forum: What is it? - Where is it from? Posted: Dec 23, 2021 15:39 Subject: San Pedro Corralitos unknown |
| I acquired an old specimen from San Pedro Corralitos. It is the typical brown gossan coated with yellow-green mimetite microcrystals to 0.3 mm and bluish-black microcrystals in botryoidal aggregates t ... | |
| Topic: Black stones |
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| John Betts Replies: 4 Views: 4427 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Aug 28, 2021 10:07 Subject: Re: Black stones |
| They are most likely black tourmaline. Probably schorl. | |
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