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  3 samples matching your criteria
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        Sample n°5910 : nodules (15 cm)Minerals: MARCASITEYear: 1957Country: Congo (RDC)
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        Sample n°6112 : beige fragments (1 cm)Minerals: GORCEIXITEYear:Country: République Centrafricaine
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        Sample n°6113 : debris of crystalsMinerals: AMETHYST (quartz)Year:Country: République Centrafricaine