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165 samples matching your criteria
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Sample n°6847 : geode with analcime crystals (5 mm) in black rock (6 cm)Minerals: ANALCIMEYear: 1954Country: Czech Republic
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Sample n°6860 : geode with white crystals (7 mm) on trachyte substrate (10 cm)Minerals: LAUMONTITEYear: 1954Country: Czech Republic
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Sample n°6895 : black crystals (cm) in brown altered block, and isolated crystals (3 cm)Minerals: HORNBLENDEYear: 1954Country: Czech Republic
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Sample n°6897 : crystalline block (7 cm)Minerals: BIOTITE QUARTZYear: 1954Country: Czech Republic
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Sample n°6898 : blocks of stacked tabular crystals (2 cm), var. zinnwalditeMinerals: SIDEROPHYLLITE POLYLITHIONITEYear: 1954Country: Czech Republic
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Sample n°6945 : massive brown phosphates (6 cm)Minerals: TRIPLITEYear: 1954Country: Czech Republic
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Sample n°6952 : yellow-beige clayey block (10 cm)Minerals: DIADOCHITEYear: 1954Country: Czech Republic
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Sample n°6967 : sample with possible yellow-orange fibrous zippeite, white gypsum crystals, hematite mixed with micaMinerals: ZIPPEITE GYPSUM HEMATITE URANINITEYear: 1957Country: Czech Republic
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Sample n°6973 : crust of brown crystals (5 mm) on smoky quartzMinerals: SCHEELITE QUARTZYear: 1954Country: Czech Republic
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Sample n°10182 : yellow metallic fibres on quartz in fine-grained red quartzite (25 cm)Minerals: MILLERITEYear: 1964Country: Czech Republic