Apatite and Orthoclase Physical Properties

Apatite

Orthoclase

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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

2.54-2.61

Uneven

Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.

KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Apatite and Orthoclase Chemical Formula

While comparing Apatite and Orthoclase 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 Orthoclase chemical formula.

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Apatite and Orthoclase Specific Gravity

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