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230 samples matching your criteria
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Sample n°12920 : sample with small brown mounanaite crystals, francevillite as crystals and impregnationsMinerals: FRANCEVILLITE MOUNANAITE GOETHITEYear: 1972Country: Gabon
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Sample n°13070 : group of parallel stalactitesMinerals: GOETHITEYear: 1970Country: Congo (RDC)
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Sample n°13256 : dark brown earthy debris, lampaditeMinerals: TENORITE ASBOLANE GOETHITEYear: 1975Country: Congo (RDC)
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Sample n°13385 : banded iron formationMinerals: GOETHITEYear: 1976Country: Liberia
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Sample n°13483 : geode of pink fibres in ochrous ferruginous substrate, var. chalcotrichiteMinerals: CUPRITE GOETHITEYear:Country: Congo (RDC)
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Sample n°13540 : earthy yellow material enclosed in brown block (10 cm)Minerals: CYRILOVITE GOETHITEYear: 1972Country: Rwanda
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Sample n°13655 : breccious block (8 cm) with white clayey materialMinerals: HYDROZINCITE GOETHITE SMITHSONITEYear: 1979Country: Turkey
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Sample n°13672 : white and brown botryoidal crusts on block (6 cm)Minerals: GOETHITE APATITEYear: 1979Country: Australia
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Sample n°13689 : black Mn-bearing laterite as hard layerMinerals: GOETHITEYear:Country: Congo (RDC)
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Sample n°13707 : white pyramidal crystals (cm)Minerals: WARDITE GOETHITEYear: 1980Country: Canada