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152 samples matching your criteria
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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°15537 : single crystalMinerals: TANTALITEYear: 1998Country: Afghanistan
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Sample n°16023 : concentrateMinerals: COLUMBITE TANTALITEYear:Country: Congo (RDC)
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Sample n°16661 : fragments (4 cm)Minerals: COLUMBITE TANTALITEYear:Country: Burundi
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Sample n°16667 : large crystals (8 cm)Minerals: COLUMBITE TANTALITEYear:Country: Burundi
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Sample n°17032 : concentrateMinerals: COLUMBITE TANTALITEYear: 2013Country: Burundi
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Sample n°17126 : large crystalsMinerals: COLUMBITE TANTALITEYear: 2014Country: Rwanda
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Sample n°17626 : concentrateMinerals: COLUMBITE TANTALITEYear: 2017Country: Congo (RDC)
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Sample n°17629 : elongated crystals in greisenMinerals: COLUMBITE TANTALITEYear: 2017Country: Congo (RDC)