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93 samples matching your criteria
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Sample n°160 : pseudomorphs after pentagonal dodecahedral pyrite (2 cm)Minerals: GOETHITE QUARTZYear: 1901Country: Congo (RDC)
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Sample n°161 : pseudomorphs after pyrite on quartzMinerals: GOETHITE QUARTZYear: 1901Country: Congo (RDC)
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Sample n°162 : pseudomorphs after pyrite in vein quartzMinerals: GOETHITE QUARTZYear: 1901Country: Congo (RDC)
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Sample n°163 : vein quartzMinerals: QUARTZYear: 1901Country: Congo (RDC)
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Sample n°164 : rounded blockMinerals: HEMATITEYear: 1901Country: Congo (RDC)
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Sample n°165 : massiveMinerals: HEMATITE GOETHITEYear: 1901Country: Congo (RDC)
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Sample n°166 : reddish brown earthy massMinerals: HEMATITEYear: 1901Country: Congo (RDC)
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Sample n°167 : impregnations in vesicular rockMinerals: HEMATITE MAGNETITEYear: 1901Country: Congo (RDC)
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Sample n°168 : crust on quartziteMinerals: MAGNETITEYear: 1901Country: Congo (RDC)
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Sample n°169 : steel-grey crust on quartz in ferruginous substrateMinerals: HEMATITEYear: 1901Country: Congo (RDC)