Mineralogy Database

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103 samples matching your criteria

  • Sample n°4369 : brown crystals (3-6 cm)
    Minerals: CASSITERITE
    Year: 1954
    Country: Rwanda
  • Sample n°4372 : black crystals (1-2 cm)
    Minerals: CASSITERITE
    Year: 1954
    Country: Rwanda
  • Sample n°4373 : brown and black twinned crystals (3-5 cm)
    Minerals: CASSITERITE
    Year: 1954
    Country: Rwanda
  • Sample n°4379 : white and black crystal (2 cm)
    Minerals: CASSITERITE
    Year: 1954
    Country: Rwanda
  • Sample n°4640 : cross-shaped twinning of prismatic crystals (2 cm)
    Minerals: STAUROLITE
    Year: 1954
    Country: Rwanda
  • Sample n°4699 : thick black prismatic crystal (1 cm) in quartz
    Minerals: SCHORL
    Year: 1954
    Country: Rwanda
  • Sample n°5438 : breccious and banded purplish blocks (6-12 cm)
    Minerals: AMETHYST (quartz)
    Year: 1955
    Country: Rwanda
  • Sample n°5442 : white crystal (3 cm), replacement of ferberite
    Minerals: ANTHOINITE
    Year: 1955
    Country: Rwanda
  • Sample n°5443 : white powder as replacement of ferberite, in micaceous quartz (5 cm)
    Minerals: ANTHOINITE
    Year: 1955
    Country: Rwanda
  • Sample n°5444 : skeletal mass in vein quartz
    Minerals: FERBERITE ANTHOINITE
    Year: 1955
    Country: Rwanda
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