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76 samples matching your criteria
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Sample n°2639 : iridescent crust in sandstoneMinerals: GOETHITEYear: 1948Country: Congo (Congo-Brazzaville)
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Sample n°2640 : iridescent iron-rich crustMinerals: GOETHITEYear: 1948Country: Congo (Congo-Brazzaville)
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Sample n°2905 : stratified ochrous iron-rich materialMinerals: GOETHITE SIDERITEYear: 1948Country: Congo (Congo-Brazzaville)
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Sample n°2906 : beige and white round aggregates, resembling pisolithic materialMinerals: HEMIMORPHITEYear: 1949Country: Congo (Congo-Brazzaville)
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Sample n°2934 : massive blockMinerals: CHALCOCITEYear: 1948Country: Congo (Congo-Brazzaville)
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Sample n°2621 : indigenous metallurgical productMinerals: LEADYear:Country: Congo (Congo-Brazzaville)