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102 samples matching your criteria
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Sample n°13364 : octahedron (1 cm)Minerals: FERBERITEYear:Country: Rwanda
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Sample n°13539 : ochre crust on white debrisMinerals: CHURCHITE-(Y) AMBLYGONITEYear:Country: Rwanda
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Sample n°13540 : earthy yellow material enclosed in brown block (10 cm)Minerals: CYRILOVITE GOETHITEYear: 1972Country: Rwanda
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Sample n°14148 : yellow concentrate (1 mm)Minerals: MICROLITEYear: 1984Country: Rwanda
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Sample n°14310 : yellow-grey earthy debris (5 cm)Minerals: BISMUTHINITEYear: 1983Country: 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
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Sample n°16221 : coatings of small crystalsMinerals: AMETHYST (quartz)Year:Country: Rwanda
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Sample n°16033 : aggregates with deep purple colourMinerals: AMETHYST (quartz)Year: 1967Country: Rwanda
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Sample n°17853 : altered ferberite in quartzMinerals: ANTHOINITE FERBERITEYear: 2017Country: Rwanda