Mineralogy Database

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1534 samples matching your criteria

  • Sample n°4383 : white-pink concentrate (4 mm)
    Minerals: CASSITERITE
    Year: 1954
    Country: Rwanda
  • Sample n°4386 : intact crystal
    Minerals: CASSITERITE
    Year: 1954
    Country: Rwanda
  • Sample n°4402 : pink concentrate (2 mm)
    Minerals: ZIRCON
    Year: 1954
    Country: Rwanda
  • Sample n°4403 : brown concentrate (1 cm), var. malacon
    Minerals: ZIRCON
    Year: 1954
    Country: Rwanda
  • Sample n°4426 : cubes and dodecahedrons (1 cm), as alteration products of pyrite
    Minerals: GOETHITE
    Year: 1954
    Country: Rwanda
  • Sample n°4436 : black sand
    Minerals: MAGNETITE
    Year: 1954
    Country: Rwanda
  • Sample n°4441 : black plates (1 cm)
    Minerals: TANTALITE
    Year: 1954
    Country: Rwanda
  • Sample n°4444 : black debris
    Minerals: COLUMBITE TANTALITE
    Year: 1954
    Country: Rwanda
  • Sample n°4446 : black plates (6 cm)
    Minerals: COLUMBITE TANTALITE
    Year: 1954
    Country: Rwanda
  • Sample n°4448 : dull black crystals (1-4 cm)
    Minerals: COLUMBITE TANTALITE
    Year: 1954
    Country: Rwanda
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