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  4 samples matching your criteria
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        Sample n°5841 : cauliflower-like concretionMinerals: CALCITEYear: 1955Country: Congo (RDC)
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        Sample n°5843 : oval chert fragmentMinerals: QUARTZYear:Country: Congo (RDC)
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        Sample n°5850 : sawn chert fragmentMinerals: QUARTZYear:Country: Congo (RDC)
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        Sample n°6478 : cauliflower-like concretionsMinerals: CALCITEYear:Country: Congo (RDC)