Mineralogy Database

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105 samples matching your criteria

  • Sample n°1078 : banded multicoloured fragments
    Minerals: AGATE (quartz) CHALCEDONY (quartz)
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1080 : fragments and debris
    Minerals: CHALCEDONY (quartz) QUARTZ
    Year: 1938
    Country: Congo (RDC)
  • Sample n°1406 : concretionary chalcedony
    Minerals: CHALCEDONY (quartz)
    Year:
    Country: Congo (RDC)
  • Sample n°1407 : nice banded concretion
    Minerals: CHALCEDONY (quartz) QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°1745 : reniform grey and white crust (chalcedony), olive-coloured powder (mottramite)
    Minerals: CHALCEDONY (quartz) MOTTRAMITE
    Year:
    Country: Congo (RDC)
  • Sample n°1751 : fine-grained olive-green mottramite on limestone
    Minerals: MOTTRAMITE CHALCEDONY (quartz)
    Year:
    Country: Congo (RDC)
  • Sample n°1759 : botryoidal, in geode
    Minerals: CHALCEDONY (quartz)
    Year:
    Country: Congo (RDC)
  • Sample n°1784 : rounded, amber-coloured
    Minerals: CHALCEDONY (quartz)
    Year:
    Country: Congo (RDC)
  • Sample n°2434 : banded blue chalcedony in white clay
    Minerals: CHALCEDONY (quartz)
    Year: 1937
    Country: Congo (RDC)
  • Sample n°2468 : zoned chalcedony with geodes of microcrystalline quartz
    Minerals: CHALCEDONY (quartz) QUARTZ
    Year: 1937
    Country: Congo (RDC)
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