Mineralogy Database

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225 samples matching your criteria

  • Sample n°13824 : sample with radial aggregates of acicular boltwoodite crystals, scalenohedral calcite crystals in boltwoodite, brown goethite on calcite
    Minerals: BOLTWOODITE CALCITE GOETHITE
    Year: 1980
    Country: South Africa
  • Sample n°14064 : blue ring-shaped inclusions in clear prismatic quartz crystal (10 cm)
    Minerals: PAPAGOITE QUARTZ
    Year: 1984
    Country: South Africa
  • Sample n°14120 : barrel-shaped hexagonal crystal
    Minerals: CORUNDUM
    Year: 1984
    Country: South Africa
  • Sample n°14340 : honey-coloured bipyramidal crystals
    Minerals: STURMANITE
    Year: 1985
    Country: South Africa
  • Sample n°14473 : fragment of well-developed crystal
    Minerals: ORTHOCLASE
    Year:
    Country: South Africa
  • Sample n°14475 : dendrites on banded iron-rich sandstone (age +/- 2250 Ma)
    Minerals: PYROLUSITE
    Year:
    Country: South Africa
  • Sample n°15716 : fibrous band, var. crocidolite
    Minerals: RIEBECKITE
    Year: 1966
    Country: South Africa
  • Sample n°15717 : fibrous band, var. crocidolite
    Minerals: RIEBECKITE
    Year: 1966
    Country: South Africa
  • Sample n°15718 : fibrous bands, var. crocidolite
    Minerals: RIEBECKITE
    Year: 1966
    Country: South Africa
  • Sample n°15719 : crocidolite bands and bands of non-fibrous riebeckite, reaction fronts with iron oxides
    Minerals: RIEBECKITE
    Year: 1966
    Country: South Africa
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