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52 samples matching your criteria
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Sample n°16290 : massive (ferro-manganite)Minerals: MANGANITEYear: 2009Country: Congo (RDC)
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Sample n°16293 : well-developed crystalsMinerals: OLIVINEYear: 2009Country: Congo (RDC)
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Sample n°16294 : well-developed small crystalsMinerals: AUGITE OLIVINEYear:Country: Congo (RDC)
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Sample n°16295 : malachite crystals on silicified substrateMinerals: QUARTZ MALACHITEYear:Country: Congo (RDC)
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Sample n°16296 : scoria, with plant stemsMinerals: unspecifiedYear: 2009Country: Congo (RDC)
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Sample n°18551 : porous blockMinerals: MANGANESE OXIDESYear: 2018Country: Congo (RDC)
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Sample n°18552 : white vein fragmentsMinerals: PALYGORSKITEYear: 2018Country: Congo (RDC)
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Sample n°18553 : large crystal fragmentMinerals: CASSITERITEYear: 2018Country: Rwanda
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Sample n°18574 : crystalsMinerals: ELBAITEYear:Country: Rwanda
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Sample n°16244 : rounded fragmentsMinerals: GOETHITEYear:Country: Congo (RDC)