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29 Apr-22:26:22 Re: collection of volkmar stingl (Volkmar Stingl)
29 Apr-17:56:49 The mizunaka collection - agate (Am Mizunaka)
29 Apr-16:45:46 Rutile from boiling springs, usa / mvm (minerals - virtual museum) collection (Jordi Fabre)
29 Apr-11:50:01 Re: libyan desert glass structure (Craig Hagstrom)
29 Apr-08:23:04 Re: collection of michael shaw (Michael Shaw)
28 Apr-13:43:16 Re: the mim museum in beirut, lebanon (Philippe Durand)
28 Apr-13:41:44 Re: munich show (mineralientage) 2023 (Philippe Durand)
27 Apr-15:08:36 Re: collection of joseph d'oliveira (Joseph Doliveira)
27 Apr-09:22:16 Re: the mim museum in beirut, lebanon (Mim Museum)
26 Apr-22:30:18 Re: collection of volkmar stingl (Volkmar Stingl)
26 Apr-17:32:07 Topaz on albite from pakistan / mvm (minerals - virtual museum) collection (Jordi Fabre)
26 Apr-17:12:33 Re: collection of joseph d'oliveira (Joseph Doliveira)
26 Apr-15:06:49 The mizunaka collection - adularia (Am Mizunaka)
26 Apr-09:23:05 Re: collection of michael shaw (Michael Shaw)
25 Apr-16:30:00 Smithsonite (cu-bearing) from tsumeb / mvm (minerals - virtual museum) collection (Jordi Fabre)
25 Apr-10:42:35 Re: collection of joseph d'oliveira (Joseph Doliveira)
24 Apr-15:16:46 Re: if anybody knows this gemstone, please tell me (Riccardo Modanesi)
24 Apr-12:18:57 Re: collection of enrique llorens (Enrique Llorens)
24 Apr-10:59:20 Re: if anybody knows this gemstone, please tell me (Gemstonebank)
23 Apr-22:50:59 Re: collection of volkmar stingl (Volkmar Stingl)
23 Apr-16:34:26 Pyromorphite from el horcajo mines, spain / mvm (minerals - virtual museum) collection (Jordi Fabre)
23 Apr-14:49:53 The mizunaka collection - quartz (Am Mizunaka)
23 Apr-14:05:56 Re: collection of michael shaw (Michael Shaw)
23 Apr-01:56:02 The mizunaka collection - rhodochrosite (Am Mizunaka)
22 Apr-15:21:46 Re: arsenopyrite, löllingite, and large baryte xx - but location help needed (Jordi Fabre)

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  Topic: Goethite pseudomorphs after pyrites - trace elements???
Gregory Yount

Replies: 13
Views: 29841

PostForum: Minerals and Mineralogy   Posted: Sep 10, 2009 14:25   Subject: Re: Goethite pseudomorphs after pyrites - trace elements???
What you are saying is true. There are a lot of variables. The dating study was the only study that I could find that studies the uptake of U on a macro size piece of iron/goethite in a natural settin ...
  Topic: Goethite pseudomorphs after pyrites - trace elements???
Gregory Yount

Replies: 13
Views: 29841

PostForum: Minerals and Mineralogy   Posted: Sep 10, 2009 12:47   Subject: Re: Goethite pseudomorphs after pyrites - trace elements???
No, I have not found that particular paper. If you have access to it or it is available on the web, I would appreciate a copy or a link. I have read many of the papers written by Karen Wenrich and ha ...
  Topic: Goethite pseudomorphs after pyrites - trace elements???
Gregory Yount

Replies: 13
Views: 29841

PostForum: Minerals and Mineralogy   Posted: Sep 05, 2009 20:04   Subject: Goethite pseudomorphs after pyrites - trace elements???
I have a breccia pipe mining claim in Nothern Arizona for which I will be undergoing a validity exam in the next few months. The target has been shown to have a large uranium deposit at depth from a S ...
 
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