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Clarkeite : (Na,Ca,Pb)2U2(O,OH)7 |
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Bjertnes pegmatite, Krøderen Lake, Krødsherad, Buskerud, Norway
Massive orange clarkeite. Picture size 8 mm. Photographer and collection Thomas Witzke. |
| © Thomas Witzke | Photo ID: 8110 View Count: 777 |
Clarkeite : (Na,Ca,Pb)2U2(O,OH)7, Fourmarierite : PbU4O13·4H2O, Kasolite : Pb(UO2)[SiO4] · H2O |
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Bjertnes pegmatite, Krøderen Lake, Krødsherad, Buskerud, Norway
Dark brown Clarkeite rimmed by red Fourmarierite and yellow Kasolite forming a pseudomorph after a 1 cm Uraninite crystal from Bjertnes, Krøderen, Buskerud, Norway. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 63466 View Count: 643 |
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Fanny Gouge Mine (Spruce Pine Mica Company No. 10 Mine), Micaville, Celo, Spruce Pine District, Yancey Co., North Carolina, USA
Mass of clarkeite altering to canary-yellow waxy gummite, about a 2 cm specimen, courtesy of Excalibur Mineral Company. S056-19 |
| © 2007, JGW | Photo ID: 138215 View Count: 173 |
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Fanny Gouge Mine (Spruce Pine Mica Company No. 10 Mine), Micaville, Celo, Spruce Pine District, Yancey Co., North Carolina, USA
Very interesting specimen of clarkeite with a black core of uraninite altering to gummite on crystalline cyrtolite. Specimen also has patches of autunite that fluoresces brightly in SW UV light. . Specimen is very radioactive. Yellow patch registered over 11000 CPM. 3.8 cm long. Collection of Rudy Bolona. |
| Photo ID: 156986 View Count: 155 |
