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16.58: Rhodochrosite

  • Page ID
    6486
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    Rhodochrosite
    Chemical composition MnCO3 + Fe, Ca
    Crystal system Hexagonal
    Habit Rhombohedral
    Colors pink, red, yellowish, gray, brown
    Hardness 3.5 - 4
    Specific gravity 3.40 - 3.70
    Optic nature Uniaxial -
    Refractive Index 1.60 - 1.83
    Birefringence 0.208 - 0.220
    Lustre Vitreous to pearly

    File:Rhodochrosite.jpg

     

    Figure (\(PageIndex{1}\): Spectacular Cabochon 60x30mm
    Capillitas, Catamarca Province, Argentina
    Photo courtesy of Barbra Voltaire