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42 samples matching your criteria
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Sample n°17291 : bladed quartz crystalsMinerals: QUARTZ MALACHITEYear: 2016Country: Congo (RDC)
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Sample n°17292 : coating covering surface of coalesced domesMinerals: QUARTZYear: 2016Country: Congo (RDC)
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Sample n°17293 : coarse-crystalline coating of cobalt-bearing purple calciteMinerals: CALCITEYear: 2016Country: Congo (RDC)
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Sample n°17294 : coarse-crystalline coating of cobalt-bearing purple calcite, covered by white calciteMinerals: CALCITEYear: 2016Country: Congo (RDC)
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Sample n°17295 : coarse-crystalline calcite, with cobalt-bearing purple surface layerMinerals: CALCITEYear: 2016Country: Congo (RDC)
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Sample n°17296 : fragments of green translucent crystalsMinerals: TOURMALINEYear: 2016Country: Congo (RDC)
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Sample n°17297 : fragments with deep purple colourMinerals: AMETHYST (quartz)Year: 2016Country: Congo (RDC)
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Sample n°17298 : group of well-developed crystals, var. citrineMinerals: QUARTZYear: 2016Country: Congo (RDC)
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Sample n°16967 : complex crustMinerals: MALACHITEYear:Country: Congo (RDC)
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Sample n°18863 : fine-crystalline coatingMinerals: QUARTZYear:Country: Congo (RDC)