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1544 samples matching your criteria
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Sample n°1869 : black massive scoriaceous material in vein quartz (4 and 8 cm)Minerals: WOLFRAMITE QUARTZYear:Country: Rwanda
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Sample n°1870 : black crystals (2 cm) in grey vein quartzMinerals: FERBERITE QUARTZYear:Country: Rwanda
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Sample n°1871 : dull hexagonal prismatic crystal (10 cm)Minerals: BERYLYear:Country: Rwanda
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Sample n°1873 : irregular (8 cm)Minerals: ALMANDINEYear:Country: Rwanda
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Sample n°1875 : black anhedral crystals in quartz (2 and 4 cm)Minerals: FERBERITEYear:Country: Rwanda
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Sample n°1885 : altered black crystal in vein quartz debris (5 cm), with hydrokenoesmoreite (var. ferritungstite)Minerals: FERBERITE HYDROKENOELSMOREITE ANTHOINITE QUARTZYear:Country: Rwanda
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Sample n°1887 : black crystals (1 cm)Minerals: AUGITEYear:Country: Rwanda
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Sample n°1909 : grey concentrate (1 cm)Minerals: MONAZITEYear:Country: Rwanda
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Sample n°1957 : black rounded crystals (1 cm)Minerals: COLUMBITEYear:Country: Rwanda
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Sample n°1959 : black plates (2 cm)Minerals: COLUMBITEYear:Country: Rwanda