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Newest topics and users posts
12 Jul-23:04:14 Re: collection of volkmar stingl (Volkmar Stingl)
12 Jul-09:00:56 Re: the mim museum in beirut, lebanon (Mim Museum)
12 Jul-06:59:21 Re: collection from dany mabillard (Dany Mabillard)
12 Jul-00:49:24 Re: are there pyrite balls found in verzino? (Herwig)
12 Jul-00:25:14 Re: are there pyrite balls found in verzino? (Roger Warin)
12 Jul-00:08:38 Re: are there pyrite balls found in verzino? (Roger Warin)
11 Jul-17:36:07 The mizunaka collection - fluorite (Am Mizunaka)
11 Jul-14:14:25 Re: slice schalenblende (Mathias)
11 Jul-14:08:21 Re: czech rockhounding adventures – agates & amethysts (Stoner)
11 Jul-08:12:55 Czech rockhounding adventures – agates & amethysts (Stoner)
11 Jul-08:03:52 Re: are there pyrite balls found in verzino? (James Catmur)
11 Jul-02:33:28 Re: collection of michael shaw (Michael Shaw)
11 Jul-00:24:28 Re: collection of volkmar stingl (Volkmar Stingl)
10 Jul-13:46:07 Re: are there pyrite balls found in verzino? (Dany Mabillard)
10 Jul-13:45:53 Veszelyite from sanguozhuang, china / #mvm (minerals - virtual museum) collection (Jordi Fabre)
09 Jul-15:45:27 Re: caldbeck fell trip (Roy Starkey)
09 Jul-10:02:30 Re: caldbeck fell trip (Forrestblyth)
09 Jul-09:41:21 Caldbeck fell trip (Forrestblyth)
08 Jul-13:17:38 Re: stellerite specimens from piedra parada, mexico (John Betts)
07 Jul-15:58:21 The mizunaka collection - beryl (Am Mizunaka)
07 Jul-15:57:07 Milpillas' azure kiss (Silvia)
07 Jul-07:06:19 Re: collection of michael shaw (Michael Shaw)
07 Jul-03:36:36 Re: the mim museum in beirut, lebanon (Mim Museum)
06 Jul-14:50:22 Re: are there pyrite balls found in verzino? (Dany Mabillard)
06 Jul-11:07:51 Fluorite, baryte from moscona mine, spain / #mvm (minerals - virtual museum) collection (Jordi Fabre)

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  Topic: Zunyite from Canada
David K. Joyce

Replies: 6
Views: 9106

PostForum: Minerals and Mineralogy   Posted: Nov 30, 2022 10:55   Subject: Re: Zunyite from Canada
Yes, of course there are aluminous rocks in Canada. What is more important is the location. Are there the right conditions present at this locality to result in zunyite. The "Silverstone" lo ...
  Topic: Zunyite from Canada
David K. Joyce

Replies: 6
Views: 9106

PostForum: Minerals and Mineralogy   Posted: Nov 28, 2022 22:00   Subject: Re: Zunyite from Canada
The whole thing is suspect. I have never heard of a Silverstone locality. I don't know ALL of the localities, though. Zunyite is not listed in the "Catalogue of Canadian Minerals". The asso ...
  Topic: In Memoriam - Tracy has left us
David K. Joyce

Replies: 8
Views: 20869

PostForum: In Memoriam   Posted: Nov 07, 2021 21:51   Subject: Re: In Memoriam - Tracy has left us
Tracy lived very close to me and I was fortunate to visit with her often. We shared suppers a number of times per year for many years and shared mineralogical discussions and life stories. I will miss ...
  Topic: Reminiscences of a Mineralogist by Arthur Montgomery
David K. Joyce

Replies: 2
Views: 10256

PostForum: 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)
David K. Joyce

Replies: 8
Views: 27317

PostForum: 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)
David K. Joyce

Replies: 8
Views: 27317

PostForum: 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)
David K. Joyce

Replies: 8
Views: 27317

PostForum: 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
David K. Joyce

Replies: 21
Views: 23077

PostForum: 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
David K. Joyce

Replies: 21
Views: 23077

PostForum: 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
David K. Joyce

Replies: 21
Views: 23077

PostForum: 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
.
  Topic: Unusual bar pyrite from Nanisivik
David K. Joyce

Replies: 21
Views: 23077

PostForum: 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 ...
  Topic: Minerals toxicity: Where can I find information?
David K. Joyce

Replies: 12
Views: 15995

PostForum: 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.
David K. Joyce

Replies: 10
Views: 14190

PostForum: 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
David K. Joyce

Replies: 410
Views: 781932

PostForum: 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?
David K. Joyce

Replies: 55
Views: 172174

PostForum: 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.
 
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