Mineralogy Database

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36 samples matching your criteria

  • Sample n°1765 : pyrite concretions, geodes with bright malachite crystals
    Minerals: PYROLUSITE MANGANITE
    Year:
    Country: Congo (RDC)
  • Sample n°1766 : concretionary
    Minerals: PYROLUSITE MANGANITE
    Year:
    Country: Congo (RDC)
  • Sample n°1768 : concretionary
    Minerals: PYROLUSITE MANGANITE
    Year:
    Country: Congo (RDC)
  • Sample n°1772 : concretionary
    Minerals: PYROLUSITE MANGANITE
    Year:
    Country: Congo (RDC)
  • Sample n°3479 : black fibro-radial crystals
    Minerals: MANGANITE
    Year:
    Country: Congo (RDC)
  • Sample n°4325 : large fibrous crystals
    Minerals: MANGANITE
    Year: 1954
    Country: Congo (RDC)
  • Sample n°4613 : massive block with small malachite crystals in geode
    Minerals: MANGANITE PYROLUSITE
    Year:
    Country: Unknown
  • Sample n°6746 : fragments of fibro-radial cryust (3 cm)
    Minerals: MANGANITE
    Year: 1954
    Country: Germany
  • Sample n°6747 : block with black prismatic crystals (1 cm)
    Minerals: MANGANITE
    Year: 1954
    Country: Germany
  • Sample n°6767 : on metallic block (3 cm)
    Minerals: MANGANITE GOETHITE
    Year: 1954
    Country: France
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