Mineralogy Database

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231 samples matching your criteria

  • Sample n°4194 : sample with uraninite in centre of vein
    Minerals: URANINITE
    Year: 1954
    Country: Congo (RDC)
  • Sample n°4201 : unsorted black concentrate
    Minerals: COLUMBITE TANTALITE
    Year:
    Country: Rwanda
  • Sample n°6084 : xyloidal tabular crystals on greisen (10 cm)
    Minerals: CASSITERITE
    Year:
    Country: Rwanda
  • Sample n°6085 : stony emerald-like prismatic crystals (1-5 cm)
    Minerals: BERYL
    Year:
    Country: Rwanda
  • Sample n°15553 : plates (21.04 g)
    Minerals: GOLD
    Year: 1998
    Country: Congo (RDC)
  • Sample n°15554 : massive
    Minerals: COPPER
    Year: 1998
    Country: Congo (RDC)
  • Sample n°15555 : thin purple coatings of cobalt-bearing calcite
    Minerals: CALCITE
    Year: 1998
    Country: Congo (RDC)
  • Sample n°15556 : dark brown earthy substrate with discontinuous green coatings and veins
    Minerals: MANGANESE OXIDES
    Year: 1998
    Country: Congo (RDC)
  • Sample n°15557 : fragments of bluish green layered crust with bright lustre
    Minerals: CHRYSOCOLLA
    Year: 1998
    Country: Congo (RDC)
  • Sample n°15558 : small fragments
    Minerals: RENIERITE
    Year: 1998
    Country: Congo (RDC)
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