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Copper : Cu, Gypsum : Ca[SO4] · 2H2O | |
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Twin Buttes Mine (Twin Buttes Open Pit Mine), Twin Buttes, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA Image is 3 mm wide. Copper crystals included in clear gypsum. |
| © 2004 D. Schläfli | Photo ID: 18305 View Count: 440 |
Nontronite : Na0.3Fe2(Si,Al)4O10(OH)2·nH2O | |
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Twin Buttes Mine (Twin Buttes Open Pit Mine), Twin Buttes, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA Sample size: 5,5 X 4,5 cm Ex C.Nowak collection (France) Collection and photo: Arliguie M |
| © Arliguie M | Photo ID: 177033 View Count: 128 |
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