Mineralogy Database

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1097 samples matching your criteria

  • Sample n°9551 : reddish block with conchoidal fracture (22 cm)
    Minerals: CHALCEDONY (quartz) OPAL QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9558 : group of white prismatic crystals (7-12 cm)
    Minerals: QUARTZ
    Year: 1962
    Country: Rwanda
  • Sample n°9560 : group of clear prismatic crystals (10 cm)
    Minerals: QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9574 : clear prismatic crystals (5 cm)
    Minerals: QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9577 : pegmatite with green mica (15 cm), var. phengite
    Minerals: MUSCOVITE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9580 : coarse-grained block
    Minerals: MICROCLINE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9583 : white saccharoidal blocks (6 cm)
    Minerals: ALBITE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9586 : grey pegmatite (12 cm)
    Minerals: QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9602 : long bluish needles on quartz (20 cm)
    Minerals: GLAUCOPHANE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°9603 : pale blue crystals in micaceous quartz
    Minerals: APATITE QUARTZ
    Year:
    Country: Rwanda
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