Mineralogy Database

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1547 samples matching your criteria

  • Sample n°5479 : beige porcelain-textured block (10 cm)
    Minerals: CHALCEDONY (quartz)
    Year: 1964
    Country: Rwanda
  • Sample n°5836 : scoriaceous micaceous material
    Minerals: GOETHITE MICA QUARTZ
    Year: 1955
    Country: Rwanda
  • Sample n°5874 : plate-shaped crystals (1-5 cm)
    Minerals: MUSCOVITE
    Year: 1956
    Country: Rwanda
  • Sample n°5875 : pink blocks with prominent cleavage (4 cm)
    Minerals: FELDSPAR
    Year: 1956
    Country: Rwanda
  • Sample n°5904 : concentrate (1.4 % U308)
    Minerals: MICROLITE
    Year: 1957
    Country: Rwanda
  • Sample n°5905 : concentrate (1.33 % U3O8)
    Minerals: MICROLITE
    Year: 1957
    Country: Rwanda
  • Sample n°5907 : pink concentrate (3 mm)
    Minerals: ZIRCON
    Year: 1956
    Country: Rwanda
  • Sample n°6005 : mixed sulfides in vein quartz (6 cm)
    Minerals: ARSENOPYRITE GALENA QUARTZ
    Year: 1957
    Country: Rwanda
  • Sample n°6006 : crystals with metallic lustre in vein quartz (6 cm)
    Minerals: GALENA QUARTZ
    Year: 1957
    Country: Rwanda
  • Sample n°6083 : large transparent yellowish crystal
    Minerals: TOPAZ
    Year: 1957
    Country: Rwanda
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