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Anorthite
Anorthite

Apatite
Apatite



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Anorthite
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Apatite

Anorthite and Apatite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.77
Uneven
Perfect [001] good [010] poor [110]
6-6.5
CaAl 2Si 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
-
-
3.16-3.23
Conchoidal, Uneven, Conchoidal to uneven
[0001] indistinct, [1010] indistinct
5
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.

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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 Vs Apatite during the identification of gemstone. Specific gravity of Anorthite is whereas that of Apatite is .