Austinite and Anorthite Physical Properties

Austinite

Anorthite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Easily soluble in cold dilute HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.122.77

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

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

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

1.7 Mohs Hardness

4-4.56-6.5

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

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

Austinite and Anorthite Chemical Formula

While comparing Austinite 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 Austinite and Anorthite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Anorthite- CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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Austinite and Anorthite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Anorthite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Anorthite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.77 whereas that of Anorthite is 2.77.