Mineralogy Database

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7938 samples matching your criteria

  • Sample n°4589 : purplish and grey prismatic crystals (3 cm)
    Minerals: QUARTZ AMETHYST (quartz)
    Year: 1954
    Country: Congo (RDC)
  • Sample n°4590 : plate of hyacinth quartz crystals (4 cm)
    Minerals: QUARTZ
    Year: 1954
    Country: Congo (RDC)
  • Sample n°4591 : crust of red prismatic crystals (1-5 cm)
    Minerals: QUARTZ
    Year: 1954
    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°4603 : fragments with banding (4 cm)
    Minerals: AGATE (quartz) CHALCEDONY (quartz)
    Year:
    Country: Congo (RDC)
  • Sample n°4605 : concentrate (2 mm)
    Minerals: GARNET
    Year:
    Country: Congo (RDC)
  • Sample n°4607 : red concentrate (2 mm)
    Minerals: PYROPE
    Year: 1954
    Country: Congo (RDC)
  • Sample n°4608 : altered crystals
    Minerals: GARNET
    Year:
    Country: Congo (RDC)
  • Sample n°4618 : well-developed rhombohedral crystals
    Minerals: DIOPTASE
    Year:
    Country: Congo (RDC)
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