Mineralogy Database

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953 samples matching your criteria

  • Sample n°9312 : black crystals in quartz
    Minerals: COLUMBITE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9313 : black tablets (6 cm) in vein quartz
    Minerals: COLUMBITE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9314 : vein quartz (16 cm) with enclosed white amblygonite
    Minerals: AMBLYGONITE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9315 : fractured tabular crystals (10 cm) in vein quartz
    Minerals: COLUMBITE TANTALITE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9316 : bright black pyrolusite in pegmatite
    Minerals: PYROLUSITE QUARTZ
    Year: 1961
    Country: Rwanda
  • Sample n°9317 : block of mixed phosphates (10 cm)
    Minerals: ALLUAUDITE TRIPHYLITE
    Year:
    Country: Rwanda
  • Sample n°9318 : sawn grey fragments with white surface
    Minerals: SPODUMENE
    Year:
    Country: Rwanda
  • Sample n°9319 : black coatings on large block of quartz
    Minerals: PYROLUSITE QUARTZ
    Year: 1961
    Country: Rwanda
  • Sample n°9323 : small green plates in quartz (10 cm)
    Minerals: MUSCOVITE
    Year:
    Country: Rwanda
  • Sample n°9328 : large block of greisen (30 cm)
    Minerals: ALBITE MICA QUARTZ
    Year:
    Country: Rwanda
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