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11 samples matching your criteria
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Sample n°1114 : oxidised materialMinerals: CHALCOCITE MALACHITEYear: 1938Country: Congo (RDC)
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Sample n°1712 : oxidised oreMinerals: MALACHITE CHALCOCITEYear:Country: Congo (RDC)
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Sample n°1793 : layer (10 cm) of brown crystalsMinerals: CASSITERITEYear:Country: Rwanda
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Sample n°1794 : vein quartz with bright black wolframiteMinerals: WOLFRAMITE QUARTZYear:Country: Rwanda
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Sample n°1795 : geode with black crystals (mm) in white quartz (8 cm)Minerals: WOLFRAMITE QUARTZYear:Country: Rwanda
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Sample n°1796 : fibrous block (7 cm)Minerals: TOURMALINEYear:Country: Rwanda
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Sample n°2053 : radial aggregates of green needles (2 mm)Minerals: CYANOTRICHITEYear:Country: Congo (RDC)
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Sample n°2055 : malachite crystals, fibro-radial plancheite bedsMinerals: MALACHITE PLANCHEITEYear:Country: Congo (RDC)
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Sample n°3354 : clear crystal (5 cm)Minerals: TOPAZYear: 1953Country: Rwanda
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Sample n°3375 : oxidised block, with polished sectionMinerals: CHALCOCITE CUPRITE MALACHITEYear:Country: Congo (RDC)