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230 samples matching your criteria
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Sample n°8303 : grey-blue metallic materialMinerals: BORNITE CHALCOCITE CHALCOPYRITE GOETHITE HEMATITE PYRITE SPHALERITEYear: 1959Country: Congo (RDC)
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Sample n°8536 : purplish fibrous blocks (4 cm)Minerals: GOETHITEYear:Country: Rwanda
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Sample n°8617 : debris of crustMinerals: GOETHITEYear:Country: Congo (RDC)
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Sample n°8875 : white block (12 cm) with brown spotsMinerals: GOETHITE TALCYear:Country: Rwanda
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Sample n°9924 : rust-coloured blocks (5 cm)Minerals: GOETHITEYear:Country: Rwanda
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Sample n°10295 : black reniform block (5 cm)Minerals: GOETHITEYear: 1963Country: Rwanda
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Sample n°10780 : blue acicular crystals (plancheite)Minerals: PLANCHEITE CALCITE GOETHITEYear: 1965Country: Congo (RDC)
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Sample n°10883 : zoned fibro-radial mass in quartziteMinerals: GOETHITEYear: 1964Country: Burundi
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Sample n°10922 : reniform block with fibrous structure (6 cm)Minerals: GOETHITEYear: 1964Country: India
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Sample n°10984 : massive oreMinerals: GOETHITE CHALCOCITEYear: 1966Country: Namibia