Austinite and Apatite Physical Properties

Austinite

Apatite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Easily soluble in cold dilute HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.123.16-3.23

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven

1.6 Cleavage

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

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

4-4.55

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

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.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Compare Green Gemstones

Austinite Vs Clintonite

Austinite Vs Apophyllite KF

Austinite Vs Cordierite

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 and Apatite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.