Apatite and Anorthite Physical Properties

Apatite

Anorthite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.16-3.23

Conchoidal, Uneven, Conchoidal to uneven

[0001] indistinct, [1010] indistinct

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Brittle

2.77

Uneven

Perfect [001] good [010] poor [110]

6-6.5

CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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