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16 Jul-17:31:41 The mizunaka collection - chalcoalumite (Am Mizunaka)
16 Jul-12:44:28 Architectural spinel from vietnam / #mvm (minerals - virtual museum) collection (Jordi Fabre)
16 Jul-12:18:23 New book: minerals of britain and ireland 2009-2024 - a review (Jordi Fabre)
16 Jul-09:38:43 Re: collection of michael shaw (Michael Shaw)
15 Jul-13:05:10 Sphalerite with calcite from Áliva, spain / #mvm (minerals - virtual museum) collection (Jordi Fabre)
15 Jul-11:32:34 Goesdorf mine (luxembourg) antimony (Roger Warin)
14 Jul-18:03:59 Malachite after azurite on goethite (Silvia)
14 Jul-16:43:05 The mizunaka collection - quartz (Am Mizunaka)
14 Jul-09:34:45 Re: collection of michael shaw (Michael Shaw)
13 Jul-12:19:45 Lazurite (lapis lazuli) from afghanistan / #mvm (minerals - virtual museum) collection (Jordi Fabre)
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)

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

Replies: 13
Views: 34075

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: 34075

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: 34075

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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