Anorthite and Apatite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.77
3.16-3.23
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
Cleavage
Perfect [001] good [010] poor [110]
[0001] indistinct, [1010] indistinct
Chemical Composition
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Anorthite and Apatite Chemical Formula
While comparing Anorthite and Apatite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Anorthite and Apatite chemical formula.
- Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Anorthite and Apatite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anorthite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anorthite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Anorthite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.