Austinite and Apatite Physical Properties

Austinite

Apatite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Brittle

Easily soluble in cold dilute HCl

4.12

Uneven

Good in two directions parallel to the prism faces {110}

4-4.5

CaZn(AsO4)(OH)

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

Austinite and Apatite Chemical Formula

While comparing Austinite 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 Austinite and Apatite chemical formula.

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Austinite and Apatite Specific Gravity

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