Mineralogy Database

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1547 samples matching your criteria

  • Sample n°12345 : bright black plates (2-4 cm)
    Minerals: COLUMBITE
    Year: 1970
    Country: Rwanda
  • Sample n°12488 : bundles of brown acicular prismatic crystals in oxidised rock
    Minerals: TOURMALINE
    Year: 1970
    Country: Rwanda
  • Sample n°12493 : crystals, fragments, matrix occurrence
    Minerals: COLUMBITE TANTALITE-(Mn) MICROLITE WODGINITE
    Year: 1970
    Country: Rwanda
  • Sample n°12494 : plate of grey pyramidal crystals (5 cm)
    Minerals: QUARTZ
    Year: 1970
    Country: Rwanda
  • Sample n°12495 : brown block with conchoidal fractures (8 cm)
    Minerals: CHALCEDONY (quartz)
    Year: 1970
    Country: Rwanda
  • Sample n°12498 : oxidised plates (3 cm)
    Minerals: KYANITE
    Year: 1970
    Country: Rwanda
  • Sample n°12499 : stony and emerald-like prismatic crystals (1-8 cm), partly twinned
    Minerals: BERYL
    Year: 1970
    Country: Rwanda
  • Sample n°12784 : pale blue parallel plates (30 cm)
    Minerals: KYANITE
    Year: 1971
    Country: Rwanda
  • Sample n°12789 : brown blocks with conchoidal fracture (1-10 cm)
    Minerals: KAOLINITE MICA
    Year: 1972
    Country: Rwanda
  • Sample n°12877 : white clay on purple debris
    Minerals: KAOLINITE
    Year: 1972
    Country: Rwanda
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