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16 samples matching your criteria
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Sample n°9228 : granular quartz from tin-bearing veinMinerals: QUARTZYear: 1962Country: Rwanda
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Sample n°9240 : tourmalinised schistMinerals: TOURMALINE QUARTZYear: 1962Country: Rwanda
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Sample n°9226 : coarse-crystalline blocksMinerals: QUARTZYear: 1962Country: Rwanda
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Sample n°17864 : large blockMinerals: CASSITERITEYear: 2017Country: Rwanda
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Sample n°17865 : large blockMinerals: CASSITERITEYear: 2017Country: Rwanda
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Sample n°18768 : crystal fragmentMinerals: COLUMBITEYear: 2019Country: Rwanda