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Apatite and Anorthite Physical Properties


Anorthite and Apatite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.16-3.23   
2.77   

Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven   
Uneven, Uneven, Gems, Sixth Edition (2006)   

Cleavage
[0001] indistinct, [1010] indistinct   
Perfect [001] good [010] poor [110]   

Mohs Hardness
5   
6-6.5   

Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references   
CaAl 2Si 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Apatite and Anorthite Chemical Formula

While comparing Apatite and Anorthite 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 Apatite and Anorthite chemical formula.

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Apatite and Anorthite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Anorthite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Anorthite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.77 whereas that of Anorthite is 2.77.

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