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141 samples matching your criteria
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Sample n°721 : fine blue needlesMinerals: KYANITE MUSCOVITEYear: 1927Country: Congo (RDC)
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Sample n°722 : colourless crystals in pegmatiteMinerals: APATITEYear: 1909Country: Congo (RDC)
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Sample n°723 : long needles in host rockMinerals: KYANITEYear: 1909Country: Congo (RDC)
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Sample n°736 : sawn block with black metallic veinsMinerals: CHALCOCITE STROMEYERITEYear: 1927Country: Congo (RDC)
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Sample n°741 : massiveMinerals: CHALCOCITEYear: 1927Country: Congo (RDC)
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Sample n°742 : red block, crust of green needles (malachite), blue surface layer (chrysocolla)Minerals: CHRYSOCOLLA CUPRITE MALACHITEYear: 1927Country: Congo (RDC)
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Sample n°743 : debris of oxidised oreMinerals: CUPRITE MALACHITEYear:Country: Congo (RDC)
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Sample n°744 : blue-green fibro-radial beds (pseudomalachite), green nodules (malachite)Minerals: MALACHITE PSEUDOMALACHITEYear: 1927Country: Congo (RDC)
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Sample n°745 : band of green broken crystals in siliceous rockMinerals: DIOPTASE KATANGITE (plancheite) QUARTZYear:Country: Congo (RDC)
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Sample n°747 : small bright yellow crystalsMinerals: WILLEMITEYear:Country: Congo (RDC)