Mineralogy Database
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56 samples matching your criteria
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Sample n°3078 : massive block (10 cm), slightly botryoidalMinerals: CRYPTOMELANEYear: 1951Country: Congo (RDC)
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Sample n°8855 : mixed phosphates with manganese mineralsMinerals: CRYPTOMELANE HETEROSITE PHOSPHOSIDERITEYear:Country: Rwanda
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Sample n°10662 : brown bundles and fibro-radial layers on manganese oxidesMinerals: FRONDELITE CRYPTOMELANEYear: 1965Country: Rwanda
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Sample n°10725 : stalactitic aggregatesMinerals: CRYPTOMELANE MANGANITEYear: 1965Country: Congo (RDC)
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Sample n°10726 : velvety nodulesMinerals: CRYPTOMELANEYear: 1965Country: Congo (RDC)
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Sample n°10727 : nodulesMinerals: CRYPTOMELANEYear: 1965Country: Congo (RDC)
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Sample n°10731 : massive or dendriticMinerals: CRYPTOMELANEYear: 1965Country: Congo (RDC)
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Sample n°10735 : cryptomelane nodules on mineralised conglomerateMinerals: CRYPTOMELANEYear: 1965Country: Congo (RDC)
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Sample n°10739 : concretionary material, covered with black coatingsMinerals: CRYPTOMELANEYear: 1965Country: Congo (RDC)
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Sample n°10740 : concretionary materialMinerals: CRYPTOMELANEYear: 1965Country: Congo (RDC)