Mineralogy Database

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853 samples matching your criteria

  • Sample n°4420 : powdery black heterogenite on green nodules
    Minerals: HETEROGENITE MALACHITE
    Year:
    Country: Congo (RDC)
  • Sample n°4421 : concretionary black coating
    Minerals: HETEROGENITE MALACHITE
    Year:
    Country: Congo (RDC)
  • Sample n°4422 : black layers in dolomite
    Minerals: HETEROGENITE
    Year:
    Country: Congo (RDC)
  • Sample n°4423 : layer of nodules, locally with metallic lustre
    Minerals: HETEROGENITE
    Year:
    Country: Congo (RDC)
  • Sample n°4424 : red pisolithic bauxite
    Minerals: unspecified
    Year: 1954
    Country: Congo (RDC)
  • Sample n°4425 : massive fibro-radial red material
    Minerals: GOETHITE
    Year: 1954
    Country: Unknown
  • Sample n°4426 : cubes and dodecahedrons (1 cm), as alteration products of pyrite
    Minerals: GOETHITE
    Year: 1954
    Country: Rwanda
  • Sample n°4427 : various crystals (cm), as alteration products of pyrite
    Minerals: HEMATITE
    Year: 1954
    Country: Burundi
  • Sample n°4428 : crystals (cm), as repllacement of pyrite in quartz geode
    Minerals: HEMATITE QUARTZ
    Year: 1954
    Country: Burundi
  • Sample n°4429 : crystals (1-5 mm), as alteration products of pyrite
    Minerals: GOETHITE
    Year: 1954
    Country: Congo (RDC)
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