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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 15 matches |
| Author | Message |
|---|---|
 Topic: Reminiscences of a Mineralogist by Arthur Montgomery |
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| David K. Joyce Replies: 2 Views: 1104 |
 Forum: Mineralogical Literature Posted: Apr 08, 2021 18:22 Subject: Re: Reminiscences of a Mineralogist by Arthur Montgomery |
| I concur with John S. White. At the suggestion of John, I started reading Arthur Montgomery's "Reminiscences of a Mineralogist" and quickly read it cover to cover. I'll probably read it agai ... | |
| Topic: The native gold from Guelmim-Oued Noun, Morocco - (35) |
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| David K. Joyce Replies: 8 Views: 5087 |
Forum: Featured Columns of FMF Posted: Dec 29, 2020 09:04 Subject: Re: The native gold from Guelmim-Oued Noun, Morocco - (35) |
| I bow to your knowledge of Moroccan minerals and localities. Still those were very similar specimens (no copper secondaries that I noticed) and people should be aware of it and the possibility that su ... | |
| Topic: The native gold from Guelmim-Oued Noun, Morocco - (35) |
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| David K. Joyce Replies: 8 Views: 5087 |
Forum: Featured Columns of FMF Posted: Dec 29, 2020 08:42 Subject: Re: The native gold from Guelmim-Oued Noun, Morocco - (35) |
| Hi Tomek et al, I guess I’ll never know if it is the exact find but it looks the same. I examined all the specimens closely. All were specimens for sale from Moroccans, during Tucson, 2020. As I said, ... | |
| Topic: The native gold from Guelmim-Oued Noun, Morocco - (35) |
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| David K. Joyce Replies: 8 Views: 5087 |
Forum: Featured Columns of FMF Posted: Dec 29, 2020 08:18 Subject: Re: The native gold from Guelmim-Oued Noun, Morocco - (35) |
| Hello All, I have never had any doubts about the natural nature of the gold crystals from this locality. They are natural and I am glad to see the above detailed analytical work. However, I have seen ... | |
| Topic: Unusual bar pyrite from Nanisivik |
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| David K. Joyce Replies: 21 Views: 4623 |
Forum: Minerals and Mineralogy Posted: Oct 29, 2020 17:01 Subject: Re: Unusual bar pyrite from Nanisivik |
| I'd look forward to seeing them! Thanks, DKJ | |
| Topic: Unusual bar pyrite from Nanisivik |
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| David K. Joyce Replies: 21 Views: 4623 |
Forum: Minerals and Mineralogy Posted: Oct 29, 2020 16:43 Subject: Re: Unusual bar pyrite from Nanisivik |
| I'm sure you have noted that the pyrite crystals at Nanisivik are mostly combinations of various isometric forms which vary in dominance. in figure 29, the cube dominated but you will also see dodecah ... | |
| Topic: Unusual bar pyrite from Nanisivik |
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| David K. Joyce Replies: 21 Views: 4623 |
Forum: Minerals and Mineralogy Posted: Oct 29, 2020 15:48 Subject: Re: Unusual bar pyrite from Nanisivik |
| I was referring to the furthest right pyrite on the right of the specimen. Figure 29, is, in fact, very thick overgrowths on a former pseudomorph. DKJ
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| Topic: Unusual bar pyrite from Nanisivik |
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| David K. Joyce Replies: 21 Views: 4623 |
Forum: Minerals and Mineralogy Posted: Oct 29, 2020 14:26 Subject: Re: Unusual bar pyrite from Nanisivik |
| Hello Russ,
The pyrites are usually very bizarre and there are good reasons for it. It is not a simple concept. Thousands of unusual pyrites have come from the Nanisivik Mine. The initial iron sul ... |
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| Topic: Minerals toxicity: Where can I find information? |
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| David K. Joyce Replies: 12 Views: 4676 |
Forum: Minerals and Mineralogy Posted: Oct 13, 2020 09:17 Subject: Re: Minerals toxicity: Where can I find information? |
| Hi Olivier, The article Jordi linked you to is a very good summary. I don't know how worried you are about this but, practically speaking, there is not much to worry about. I have been collecting min ... | |
| Topic: Help me identify this I keep finding during metal detecting please. |
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| David K. Joyce Replies: 10 Views: 3644 |
Forum: What is it? - Where is it from? Posted: Sep 19, 2020 13:08 Subject: Re: Help me identify this I keep finding during metal detecting please. |
| If that piece of quartz is setting the metal detector off, there must be something conductive inside it. I suggest hitting it with a hammer to break it and see if there is gold, pyrrhotite or some oth ... | |
| Topic: The MIM Museum in Beirut, Lebanon |
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| David K. Joyce Replies: 212 Views: 336068 |
Forum: MIM Museum (Beirut, Lebanon) Posted: Aug 05, 2020 16:08 Subject: Re: The MIM Museum in Beirut, Lebanon |
| Such a terrible event in Lebanon. To compare it with an earthquake is really misleading, though. I have no doubt that there was an earthquake equivalent of 3.3-4.0 or so. This would only account for s ... | |
| Topic: When can a fossil be also considered a mineral? |
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| David K. Joyce Replies: 50 Views: 66806 |
Forum: The Ten Thousand Club Posted: Apr 20, 2020 08:02 Subject: Re: When can a fossil be also considered a mineral? |
| Here is a mineral specimen disguised as a fossil. A gastropod, I think. It is as thin as an eggshell and totally composed of tiny calcite or dolomite crystals. | |
| Topic: A potpourri of musings....barely related to minerals. |
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| David K. Joyce Replies: 8 Views: 6632 |
Forum: Off-Topic and Introductions Posted: Jun 13, 2019 09:01 Subject: Re: A potpourri of musings....barely related to minerals. |
| The upside of collecting at a roadcut on the moon, amongst falling rocks, is that falling rocks of a size that would kill or seriously injure you here on Earth, would just glance off of your shoulder ... | |
| Topic: Are there any Sicilian Sulphur fakes still around? |
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| David K. Joyce Replies: 12 Views: 15196 |
Forum: Incorrect classification and fakes Posted: May 20, 2019 12:34 Subject: Re: Are there any Sicilian Sulphur fakes still around? |
| Personally, I will always be vigilant when examining Sicilian sulphur specimens. There were many created. I'm sure many still exist in private collections and will eventually re-enter the market . DKJ | |
| Topic: Collection of Firmo Espinar |
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| David K. Joyce Replies: 493 Views: 253633 |
Forum: Collection photos and Collector's page Posted: Dec 16, 2018 12:33 Subject: Re: Franjungle Collection |
| Are these opals fluorescent?
David KJ |
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