Mineralogy Database

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21 samples matching your criteria

  • Sample n°4352 : black octahedral crystals (2 cm) in pegmatite (8 cm)
    Minerals: CASSITERITE
    Year: 1954
    Country: Rwanda
  • Sample n°4353 : brown octahedral crystals (6 mm)
    Minerals: CASSITERITE
    Year: 1954
    Country: Rwanda
  • Sample n°4362 : debris of black crystals
    Minerals: CASSITERITE
    Year: 1954
    Country: Rwanda
  • Sample n°4377 : 'bec d'étain' twinning (5 cm)
    Minerals: CASSITERITE
    Year:
    Country: Rwanda
  • Sample n°4577 : groups of parallel grey prismatic crystals (8-20 cm)
    Minerals: QUARTZ
    Year: 1954
    Country: Rwanda
  • Sample n°4578 : short bipyramidal prismatic crystal (5 cm)
    Minerals: QUARTZ
    Year: 1954
    Country: Rwanda
  • Sample n°8805 : grey cryptocrystalline material (5 cm)
    Minerals: MUSCOVITE
    Year: 1961
    Country: Rwanda
  • Sample n°8806 : white clayey block (5 cm)
    Minerals: HALLOYSITE
    Year: 1960
    Country: Rwanda
  • Sample n°8936 : groups of yellowish prismatic crystals (5-8 cm)
    Minerals: QUARTZ
    Year: 1961
    Country: Rwanda
  • Sample n°9547 : clear prismatic crystal with striated crystal faces (30 cm)
    Minerals: QUARTZ CHALCEDONY (quartz)
    Year:
    Country: Rwanda
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