Turquoise and Apatite Physical Properties

Turquoise

Apatite

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Physical Properties

Tenacity

Solubility

Soluble

Durability

Specific Gravity

2.30-2.903.16-3.23

1 7.18

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Fracture

Conchoidal

Conchoidal, Uneven, Conchoidal to uneven

Cleavage

Good to perfect_usually N/A

[0001] indistinct, [1010] indistinct

Mohs Hardness

5-65

2 10

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Chemical Composition

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

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

Turquoise and Apatite Chemical Formula

While comparing Turquoise 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 Turquoise and Apatite chemical formula.

Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O
Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

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Turquoise and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Turquoise and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Turquoise and Apatite Optical Properties during the identification of gemstone. Specific gravity of Turquoise is 3.16-3.23 whereas that of Apatite is 3.16-3.23.