Mineralogy Database

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105 samples matching your criteria

  • Sample n°3611 : reniform concretion in geode
    Minerals: CHALCEDONY (quartz) QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°4547 : crust of black crystals (1 cm) on block of chalcedony
    Minerals: LIBETHENITE CHALCEDONY (quartz)
    Year:
    Country: Congo (RDC)
  • Sample n°4596 : black, blue and green debris
    Minerals: OPAL CHALCEDONY (quartz) QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°4598 : sawn pink blocks with concentric structure
    Minerals: AGATE (quartz) CHALCEDONY (quartz)
    Year: 1954
    Country: Congo (RDC)
  • Sample n°4601 : shiny blue crust
    Minerals: CHALCEDONY (quartz)
    Year:
    Country: Unknown
  • Sample n°4603 : fragments with banding (4 cm)
    Minerals: AGATE (quartz) CHALCEDONY (quartz)
    Year:
    Country: Congo (RDC)
  • Sample n°4710 : olive-green coatings (chalcedony)
    Minerals: CHALCEDONY (quartz) KATANGITE (plancheite)
    Year:
    Country: Congo (RDC)
  • Sample n°5479 : beige porcelain-textured block (10 cm)
    Minerals: CHALCEDONY (quartz)
    Year: 1964
    Country: Rwanda
  • Sample n°5834 : sawn block (20 cm), septarian concretion
    Minerals: CHALCEDONY (quartz)
    Year:
    Country: Congo (RDC)
  • Sample n°5849 : geode with renifiorm concretion and pink granular material
    Minerals: CHALCEDONY (quartz) QUARTZ
    Year:
    Country: Congo (RDC)
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