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  3 samples matching your criteria
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        Sample n°238 : massive cleaved blockMinerals: BARYTEYear: 1910Country: Congo (RDC)
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        Sample n°244 : group of clear prismatic crystals (3 to 12 cm)Minerals: QUARTZYear: 1910Country: Congo (RDC)
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        Sample n°245 : block of white clayMinerals: KAOLINITEYear: 1910Country: Congo (RDC)