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319 samples matching your criteria
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Sample n°1572 : fragment with mixed compositionMinerals: TOURMALINE QUARTZYear:Country: Congo (RDC)
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Sample n°1573 : green fragment (4 cm)Minerals: EPIDOTEYear:Country: Congo (RDC)
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Sample n°1574 : small sheet (5 mm)Minerals: GOLDYear: 1959Country: Congo (RDC)
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Sample n°1579 : massive redMinerals: HEMATITEYear: 1939Country: Congo (RDC)
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Sample n°1580 : banded iron formationMinerals: HEMATITEYear: 1939Country: Congo (RDC)
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Sample n°1582 : small pyramidal crytals on schistMinerals: ARSENOPYRITEYear: 1939Country: Congo (RDC)
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Sample n°1583 : plate-shaped crystals on rock substrateMinerals: BIOTITEYear: 1939Country: Congo (RDC)
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Sample n°1586 : sample composed of small concretionsMinerals: GOETHITEYear:Country: Congo (RDC)
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Sample n°1587 : specular, on quartzMinerals: HEMATITE QUARTZYear:Country: Congo (RDC)
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Sample n°1588 : transformed cubic pyrite crystals (0.5 cm)Minerals: HEMATITEYear:Country: Congo (RDC)