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65 samples matching your criteria
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Sample n°3530 : banded (pink, red, white)Minerals: AGATE (quartz)Year:Country: Congo (RDC)
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Sample n°5927 : block of micaceous carbonatite, var. sheridaniteMinerals: CLINOCHLOREYear: 1958Country: Congo (RDC)
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Sample n°5932 : bladed pink block (10 cm)Minerals: MAGNESITEYear: 1958Country: Congo (RDC)
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Sample n°6401.1 : yellow coating on vein quartzMinerals: NONTRONITEYear: 1958Country: Congo (RDC)
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Sample n°6401.2 : black crystals within geode in vein quartzMinerals: GALENAYear: 1958Country: Congo (RDC)
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Sample n°6401.3 : specular hematite in vein quartzMinerals: HEMATITEYear: 1958Country: Congo (RDC)
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Sample n°6401.4 : green coating on fine-grained granite, var. pistachiteMinerals: EPIDOTEYear: 1958Country: Congo (RDC)
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Sample n°6401.5 : green crystals on vein quartzMinerals: AEGIRINEYear: 1958Country: Congo (RDC)
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Sample n°6403 : sample with francevillite as canary-yellow impregnation in sandstone and as lozenge-shaped honey-coloured crystals in small veinsMinerals: FRANCEVILLITEYear: 1958Country: Gabon
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Sample n°6404 : sample with sphalerite and galena in bright black crust in feldspar-bearing sandstone (radioactive sample)Minerals: GALENA SPHALERITEYear: 1958Country: Gabon