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23 samples matching your criteria
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Sample n°10675 : cleaved white blocks (7 and 11 cm)Minerals: MONTEBRASITEYear:Country: Rwanda
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Sample n°10677 : various broken black crystals (1-6 cm), with polished sectionMinerals: CASSITERITEYear:Country: Rwanda
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Sample n°12121 : clear prismatic crystals (2 cm)Minerals: EUCLASEYear: 1969Country: Rwanda
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Sample n°13193 : block of mixed white phosphates (16 cm)Minerals: MONTEBRASITE WARDITE FLUORAPATITE WAVELLITEYear: 1974Country: Rwanda
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Sample n°13194 : black block with purple crust (18 cm)Minerals: HETEROSITE PHOSPHOSIDERITEYear: 1974Country: Rwanda
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Sample n°13195 : black block with purple crust and black powder (13 cm)Minerals: HETEROSITE PHOSPHOSIDERITE MANGANESE OXIDESYear: 1974Country: Rwanda
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Sample n°13539 : ochre crust on white debrisMinerals: CHURCHITE-(Y) AMBLYGONITEYear:Country: Rwanda
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Sample n°14148 : yellow concentrate (1 mm)Minerals: MICROLITEYear: 1984Country: Rwanda
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Sample n°13687 : concentrateMinerals: PYROCHLORE URANPYROCHLORE ZIRCONYear: 1979Country: Rwanda
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Sample n°15927 : debrisMinerals: MICROLITEYear:Country: Rwanda