Mineralogy Database

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319 samples matching your criteria

  • Sample n°2479 : green block with cleavage (9 cm), var. amazonite
    Minerals: MICROCLINE
    Year:
    Country: Congo (RDC)
  • Sample n°2480 : green blocks with prominent cleavage (8 cm), var. amazonite
    Minerals: MICROCLINE QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°2481 : pink blocks with prominent cleavage (15 cm), with enclosed pink quartz
    Minerals: MICROCLINE QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°2482 : small geodes in quartzite
    Minerals: CHALCEDONY (quartz) QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°2484 : concretionary geodic block
    Minerals: CHALCEDONY (quartz) QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°2485 : metallic block (20 kg)
    Minerals: BISMUTH
    Year: 1940
    Country: Congo (RDC)
  • Sample n°2486 : block (40 kg) with rounded surface
    Minerals: CASSITERITE
    Year: 1940
    Country: Congo (RDC)
  • Sample n°2487 : black plates (2 cm) and needles in altered greisen (16 cm)
    Minerals: TANTALITE
    Year:
    Country: Rwanda
  • Sample n°2871 : clear terminated prismatic crystals
    Minerals: QUARTZ
    Year: 1950
    Country: Angola
  • Sample n°3010 : white powder on scoriaceous lava
    Minerals: SALAMMONIAC
    Year: 1948
    Country: Congo (RDC)
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