Mineralogy Database

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7938 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°983 : smoky quartz
    Minerals: QUARTZ FELDSPAR
    Year: 1937
    Country: Congo (RDC)
  • Sample n°984 : stalactite (10 cm)
    Minerals: CALCITE
    Year: 1937
    Country: Congo (RDC)
  • Sample n°985 : pink, stratified, var. steatite
    Minerals: TALC
    Year: 1937
    Country: Congo (RDC)
  • Sample n°987 : impregnations and small veins in limestone
    Minerals: MALACHITE CHALCOPYRITE GALENA
    Year: 1937
    Country: Congo (RDC)
  • Sample n°992 : blue-green coating on pink limestone
    Minerals: CHRYSOCOLLA
    Year: 1937
    Country: Congo (RDC)
  • Sample n°993 : blue crystals (1 cm) in limestone
    Minerals: QUARTZ
    Year: 1937
    Country: Congo (RDC)
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