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Geosciences LibreTexts

16.25: Calcite

  • Page ID
    4361
  • Calcite
    Chemical composition CaCO3
    Crystal system Hexagonal(Trigonal)
    Habit Massive
    Hardness 3
    Specific gravity 2.69 - 2.71
    Optic nature Uniaxial -
    Refractive Index 1.486 - 1.658
    Birefringence 0.172 - 0.19
    Lustre Vitreous