Mineralogy Database

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199 samples matching your criteria

  • Sample n°8529.1 : oriented black needles in micaschist (10 cm)
    Minerals: TOURMALINE
    Year:
    Country: Rwanda
  • Sample n°8529.2 : black crystal (2 cm) in vein quartz
    Minerals: CASSITERITE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°8531 : black anhedral altered crystals in vein quartz
    Minerals: WOLFRAMITE QUARTZ SCORODITE
    Year:
    Country: Rwanda
  • Sample n°8532 : altered black crystals with yellow alteration in vein quartz, with hydrokenoesmoreite (var. ferritungstite)
    Minerals: HYDROKENOELSMOREITE WOLFRAMITE
    Year:
    Country: Rwanda
  • Sample n°8533 : shiny black block (8 cm)
    Minerals: TANTALITE
    Year:
    Country: Rwanda
  • Sample n°8534 : broken crystal (1 cm) in pink pegmatite
    Minerals: COLUMBITE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°8535 : purple vein (1 cm) in micaschist
    Minerals: HEMATITE MAGNETITE
    Year:
    Country: Rwanda
  • Sample n°8536 : purplish fibrous blocks (4 cm)
    Minerals: GOETHITE
    Year:
    Country: Rwanda
  • Sample n°8537 : bright granular block (5 cm)
    Minerals: HEMATITE
    Year:
    Country: Rwanda
  • Sample n°8538 : bright fragment (8 cm)
    Minerals: HEMATITE
    Year:
    Country: Rwanda
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