Mineralogy Database

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29 samples matching your criteria

  • Sample n°6403 : sample with francevillite as canary-yellow impregnation in sandstone and as lozenge-shaped honey-coloured crystals in small veins
    Minerals: FRANCEVILLITE
    Year: 1958
    Country: Gabon
  • Sample n°6404 : sample with sphalerite and galena in bright black crust in feldspar-bearing sandstone (radioactive sample)
    Minerals: GALENA SPHALERITE
    Year: 1958
    Country: Gabon
  • Sample n°6406 : black earthy oxides
    Minerals: MANGANESE OXIDES
    Year: 1958
    Country: Gabon
  • Sample n°7203 : sample with canary-yellow francevillite crust
    Minerals: FRANCEVILLITE
    Year: 1959
    Country: Gabon
  • Sample n°10115 : sample with roscoelite as grey powder, some brown baryte crystals (radioactive sample)
    Minerals: ROSCOELITE BARYTE
    Year: 1964
    Country: Gabon
  • Sample n°10116 : sample with francevillite as canary-yellow crust or impregnation and as isolated yellow to orange crystals, microcrystalline chervetite coating in one spot
    Minerals: FRANCEVILLITE CHERVETITE
    Year: 1964
    Country: Gabon
  • 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 nodules
    Minerals: CURIENITE MOUNANAITE URANOPHANE
    Year: 1969
    Country: Gabon
  • Sample n°12911 : sample with banded francevillite composed of yellow crystals, green octahedral metatorbernite crystals, orange curienite spheres, on coarse-grained sandstone
    Minerals: FRANCEVILLITE METATORBERNITE CURIENITE
    Year: 1972
    Country: Gabon
  • Sample n°12912 : sample with metavanuralite as canary-yellow rosettes and micaceous material, small brown mounanaite crystals, on coarse-grained sandstone
    Minerals: METAVANURALITE MOUNANAITE
    Year: 1972
    Country: Gabon
  • Sample n°12913 : sample with yellow-brown compact francevillite crystals, well-developed chervetite crystals (2 cm), small brown mounanaite crystals
    Minerals: CHERVETITE FRANCEVILLITE METATORBERNITE MOUNANAITE
    Year: 1972
    Country: Gabon
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