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  5 samples matching your criteria
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        Sample n°900 : black crystals (1 cm) in vein quartzMinerals: TOURMALINE HEMATITEYear: 1935Country: Burundi
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        Sample n°901 : specular rust-coloured block (8 cm)Minerals: HEMATITEYear: 1935Country: Burundi
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        Sample n°2980 : fibrous specular debris (4 cm)Minerals: HEMATITEYear: 1935Country: Burundi
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        Sample n°3304 : anhedral crystals (1-3 cm)Minerals: CASSITERITEYear: 1931Country: Rwanda
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        Sample n°5836 : scoriaceous micaceous materialMinerals: GOETHITE MICA QUARTZYear: 1955Country: Rwanda