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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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| Search found 379 matches |
| Author | Message |
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 Topic: mim Museum supports FMF! |
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| Pete Modreski Replies: 17 Views: 11950 |
 Forum: Comments & Suggestions Posted: Dec 31, 2024 17:19 Subject: Re: mim Museum supports FMF! |
| Congratulations about this, Jordi and colleagues, and a big thank-you to Salim Edde and all who were involved! | |
| Topic: Oxidation of Copper, Lead, and Zinc sulfides and transport below the surface |
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| Pete Modreski Replies: 4 Views: 8940 |
Forum: Minerals and Mineralogy Posted: Jan 04, 2023 15:22 Subject: Re: Oxidation of Copper, Lead, and Zinc sulfides and transport below the surface |
| Ray, as I think you do understand, entire volumes have been written about the nature and details of this process of secondary enrichment in ore deposits. I don't think there is any simple answer(s) t ... | |
| Topic: Pebbles from Elba, containing... tourmaline? |
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| Pete Modreski Replies: 4 Views: 12165 |
Forum: What is it? - Where is it from? Posted: Nov 16, 2022 10:53 Subject: Re: Pebbles from Elba, containing... tourmaline? |
| A wonderful reply, Marco, thank you very much! I had guessed that someone on the forum would be familiar with these and know just what they were. Yes, that one pebble with the white veins cutting the ... | |
| Topic: Pebbles from Elba, containing... tourmaline? |
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| Pete Modreski Replies: 4 Views: 12165 |
Forum: What is it? - Where is it from? Posted: Nov 16, 2022 00:51 Subject: Pebbles from Elba, containing... tourmaline? |
| I'd like to try to get the advice of some of my knowledgeable international friends here, to comment on just what these pebbles are, that the sister of a friend of mine, brought back from a trip to El ... | |
| Topic: Locality for a Väyrynenite? |
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| Pete Modreski Replies: 13 Views: 79639 |
Forum: Improving the FMF Data Base of localities Posted: Oct 21, 2022 08:25 Subject: Re: Locality for a Väyrynenite? |
| I am just impressed that there are that many of you who know what Väyrynenite is at all--I had to look it up! Or who can say something like "Whenever I see a Väyrynenite from Pakistan..." .. ... | |
| Topic: Warty-looking rock. Eroded garnet schist, or...? |
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| Pete Modreski Replies: 7 Views: 7611 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Sep 15, 2022 13:49 Subject: Re: Warty-looking rock. Eroded garnet schist, or...? |
| This illustrates the difficulty in identifying or recognizing what's in a rock, just from photos!
When you examine your rock close up--if the matrix looks like uniform, sandy particles, that it pro ... |
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| Topic: Asbestos name change |
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| Pete Modreski Replies: 15 Views: 49051 |
Forum: Improving the FMF Data Base of localities Posted: Aug 03, 2022 10:48 Subject: Re: Asbestos name change |
| And for those of us not from Quebec or elsewhere in Canada, what in the world does RCM stand for? (Thank you, please!) | |
| Topic: Help with mineral identification in thin section from Khibiny, Kola peninsula |
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| Pete Modreski Replies: 6 Views: 7684 |
Forum: Minerals and Mineralogy Posted: May 14, 2022 12:47 Subject: Re: Help with mineral identification in thin section from Khibiny, Kola peninsula |
| Hi Daniel, seems that only one picture made it attached?
I've been there and like these kinds of rocks, but probably don't know enough to offer a sure guess or confirmation tho! Pete |
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| Topic: Unknown metallic mineral |
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| Pete Modreski Replies: 12 Views: 9905 |
Forum: What is it? - Where is it from? Posted: Mar 16, 2022 11:32 Subject: Re: Unknown metallic mineral |
| Viewing your pictures again--considering the intergrown rutile--yes, I agree with what's been suggested, for sure, hematite with rutile, from Brazil. | |
| Topic: Unknown metallic mineral |
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| Pete Modreski Replies: 12 Views: 9905 |
Forum: What is it? - Where is it from? Posted: Mar 16, 2022 10:56 Subject: Re: Unknown metallic mineral |
| When two minerals are both quite hard and are of comparable hardness, it can be quite difficult to do a reliable hardness scratch test; it sounds like both it and quartz are "near 7" in hard ... | |
| Topic: Help identify strange rock sample |
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| Pete Modreski Replies: 6 Views: 5638 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Feb 21, 2022 14:05 Subject: Re: Help identify strange rock sample |
| 'Tis glass, alas!
Some intentionally produced glass for decorative use, or industrial slag glass, may have unmelted chunks of limestone or quartzite or flint in it, that haven't all dissolved in ... |
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| Topic: Guidance rather than identification |
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| Pete Modreski Replies: 7 Views: 6255 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Jan 01, 2022 02:40 Subject: Re: Guidance rather than identification |
| I believe you've studied the specimen well and done the tests correctly, Angel, congratulations! Your concluded answer is what I would have said from your descriptions.
I had been writing a longer ... |
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| Topic: 15 years since the beginning of FMF. As time goes! |
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| Pete Modreski Replies: 19 Views: 22013 |
Forum: Comments & Suggestions Posted: Aug 07, 2021 16:22 Subject: Re: 15 years since the beginning of FMF. As time goes! |
| It has been a most enjoyable and useful Forum and 15 years, Jordi, thank you for the idea and for doing it! And I've met many fine people through it. | |
| Topic: Crystal Habit of this Pyrite Mineral |
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| Pete Modreski Replies: 7 Views: 6683 |
Forum: FOR BEGINNERS: What is it? Where is it from? Posted: Aug 05, 2021 12:34 Subject: Re: Crystal Habit of this Pyrite Mineral |
| Yes, definitely, we'd just call it "massive".
Looks like it's criss-crossed by veins & patches of some other, dark mineral, probably some other sulfide. Could be any of a great numbe ... |
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| Topic: Linarite or azurite |
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| Pete Modreski Replies: 5 Views: 27219 |
Forum: Conserving, Preparing and Cleaning Minerals Posted: Jul 12, 2021 13:46 Subject: Re: Linarite or azurite |
| If it's in vugs associated with galena & anglesite, I would guess it's most likely linarite. Let us know what your acid test turns out to show? | |
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