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  4 samples matching your criteria
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        Sample n°6005 : mixed sulfides in vein quartz (6 cm)Minerals: ARSENOPYRITE GALENA QUARTZYear: 1957Country: Rwanda
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        Sample n°6006 : crystals with metallic lustre in vein quartz (6 cm)Minerals: GALENA QUARTZYear: 1957Country: Rwanda
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        Sample n°8637 : rust-coloured fragments (1-3 cm)Minerals: MONAZITEYear:Country: Burundi
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        Sample n°3103 : earthy materialMinerals: BASTNASITEYear: 1952Country: Burundi