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29 samples matching your criteria
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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
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Sample n°6406 : black earthy oxidesMinerals: MANGANESE OXIDESYear: 1958Country: Gabon
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Sample n°7203 : sample with canary-yellow francevillite crustMinerals: FRANCEVILLITEYear: 1959Country: Gabon
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Sample n°10115 : sample with roscoelite as grey powder, some brown baryte crystals (radioactive sample)Minerals: ROSCOELITE BARYTEYear: 1964Country: Gabon
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Sample n°10116 : sample with francevillite as canary-yellow crust or impregnation and as isolated yellow to orange crystals, microcrystalline chervetite coating in one spotMinerals: FRANCEVILLITE CHERVETITEYear: 1964Country: Gabon
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Sample n°11958 : sample with curienite as orange blades, isolated honey-coloured crystals and as yellow powder, mounanaite as crust of chocolat-brown crystals, orange uranopilite nodulesMinerals: CURIENITE MOUNANAITE URANOPHANEYear: 1969Country: Gabon
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Sample n°12911 : sample with banded francevillite composed of yellow crystals, green octahedral metatorbernite crystals, orange curienite spheres, on coarse-grained sandstoneMinerals: FRANCEVILLITE METATORBERNITE CURIENITEYear: 1972Country: Gabon
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Sample n°12912 : sample with metavanuralite as canary-yellow rosettes and micaceous material, small brown mounanaite crystals, on coarse-grained sandstoneMinerals: METAVANURALITE MOUNANAITEYear: 1972Country: Gabon
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Sample n°12913 : sample with yellow-brown compact francevillite crystals, well-developed chervetite crystals (2 cm), small brown mounanaite crystalsMinerals: CHERVETITE FRANCEVILLITE METATORBERNITE MOUNANAITEYear: 1972Country: Gabon