Moroxite

Moroxite is a bluish-green variety of Apatite, found originally at Arendal in Norway. The name is derived from a certain Greek word applied to a stone used by the Ancients in bleaching linen. Clear crystals of Moroxite have occasionally been cut and polished, but their softness renders them ill-suited for jewellery.
General Information
A variety or type of:Apatite
Chemical Formula
Ca
 
5
(F,Cl)(PO
 
4
)
 
3
Arthur Thomas, Gemstones (2009)
Physical Properties of Moroxite
Mohs Hardness5 to 0
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Specific Gravity3.13 to 3.26
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Cleavage QualityFair
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
FractureConchoidal
Arthur Thomas, Gemstones (2009)
Optical Properties of Moroxite
Refractive Index1.628 to 1.651
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Optical CharacterUniaxial/-
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Birefringence0.002 to 0.008
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Colour
Colour (General)Blue-green
Gemdat.org, Management Team (2012)
TransparencyTransparent
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
LustreVitreous
Arthur Thomas, Gemstones (2009)
Crystallography of Moroxite
Crystal SystemHexagonal
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
HabitPrismatic
Arthur Thomas, Gemstones (2009)
Further Information
Mineral information:Moroxite information at mindat.org
Significant Gem Localities
Norway
 
  • Aust-Agder
    • Arendal
      • Arendal Iron Mines
        • Barbudalen
          • Steinsås
Precious Stones & Gems, Edwin Streeter, 1898
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