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236 samples matching your criteria
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Sample n°13535 : sample with small orange triangulite nodules, sulfur-yellow mundite platesMinerals: MUNDITE TRIANGULITE COLUMBITE META-AUTUNITEYear: 1978Country: Congo (RDC)
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Sample n°13809 : black crystal, cleavageMinerals: COLUMBITE TANTALITEYear: 1980Country: Madagascar
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Sample n°14146 : sample with possible columbo-tantalite (radioactive sample)Minerals: COLUMBITE TANTALITEYear: 1984Country: Norway
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Sample n°14326 : dark grey prismatic and tabular crystals (2-7 cm)Minerals: COLUMBITE TANTALITEYear: 1983Country: Rwanda
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Sample n°14358 : black block (5 cm)Minerals: COLUMBITE TANTALITEYear: 1986Country: Rwanda
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Sample n°14359 : coarse-grained fragmentMinerals: COLUMBITE TANTALITEYear: 1986Country: Rwanda
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Sample n°14360 : black oxidised plate (8 cm)Minerals: COLUMBITE TANTALITEYear: 1986Country: Rwanda
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Sample n°1102 : concentratesMinerals: COLUMBITE GARNET MONAZITE SPINEL ANDALUSITE CASSITERITE CHRYSOBERYLYear:Country: Congo (RDC)
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Sample n°16068 : columbite crystals in beryl massMinerals: COLUMBITE BERYLYear: 1974Country: Uganda
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Sample n°16023 : concentrateMinerals: COLUMBITE TANTALITEYear:Country: Congo (RDC)