Mineralogy Database

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1097 samples matching your criteria

  • Sample n°18894 : yellowish crystals
    Minerals: QUARTZ
    Year: 2019
    Country: Congo (RDC)
  • Sample n°18895 : reddish crystals
    Minerals: QUARTZ
    Year: 2019
    Country: Congo (RDC)
  • Sample n°18900 : greenish quartz coating, locally covered with pinkish calcite
    Minerals: CALCITE QUARTZ
    Year: 2019
    Country: Congo (RDC)
  • Sample n°18916 : quartz crystals, covered with hematite
    Minerals: HEMATITE QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°18918 : heterogenite mass with quartz crystals
    Minerals: HETEROGENITE QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°18923 : thick quartz coating, on heterigenite-rich substrate
    Minerals: HETEROGENITE MALACHITE QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°18945 : contact between fine-grained greenish muscovite mass (var. oncosine) and coarse-crystalline quartz
    Minerals: QUARTZ MUSCOVITE
    Year:
    Country: Rwanda
  • Sample n°18954 : quartz crystal fragments in iron oxide cement
    Minerals: QUARTZ
    Year: 2019
    Country: Congo (RDC)
  • Sample n°18957 : interlocking crystals
    Minerals: QUARTZ
    Year: 2019
    Country: Congo (RDC)
  • Sample n°18962 : terminated prismatic crystal
    Minerals: QUARTZ
    Year:
    Country: Rwanda
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