Mineralogy Database

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4831 samples matching your criteria

  • Sample n°978 : small fragments, yellow interior, blue-red exterior, with polished section
    Minerals: BORNITE CHALCOPYRITE GOETHITE PYRITE CHALCOCITE MALACHITE TENNANTITE
    Year: 1936
    Country: Congo (RDC)
  • Sample n°979 : blue to black, striated
    Minerals: CHALCOPYRITE SPHALERITE GALENA GOETHITE PYRITE RENIERITE TENNANTITE TETRAHEDRITE BORNITE CHALCOCITE
    Year: 1931
    Country: Congo (RDC)
  • Sample n°980 : small blue metallic fragments, with polished section
    Minerals: CHALCOPYRITE GOETHITE TETRADYMITE GALENA BORNITE CHALCOCITE RENIERITE SILVER SPHALERITE LINNAEITE TENNANTITE
    Year: 1931
    Country: Congo (RDC)
  • Sample n°982 : massive block, with polished section
    Minerals: CUPRITE SILVER COPPER TENORITE
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1020 : octahedral crystals in quartzite
    Minerals: MAGNETITE
    Year: 1938
    Country: Congo (RDC)
  • Sample n°1021 : small transparent crystal in iron-rich rock
    Minerals: KYANITE
    Year: 1938
    Country: Congo (RDC)
  • Sample n°1022 : quartzite with oxidised cubic crystals
    Minerals: PYRITE
    Year: 1938
    Country: Congo (RDC)
  • Sample n°1023 : crust of octahedral crystals
    Minerals: MAGNETITE QUARTZ
    Year: 1938
    Country: Congo (RDC)
  • Sample n°1024 : clear fragment and rounded crystals
    Minerals: QUARTZ
    Year: 1938
    Country: Congo (RDC)
  • Sample n°1025 : kyanite-bearing metamorphic rock altered to talc
    Minerals: TALC
    Year: 1938
    Country: Congo (RDC)
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