Sanidine and Austinite Physical Properties

Sanidine

Austinite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Easily soluble in cold dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

2.54-2.614.12

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

{001} Perfect, {010} Good

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

1.7 Mohs Hardness

64-4.5

2 10

1.8 Chemical Composition

KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

CaZn(AsO4)(OH)

Sanidine and Austinite Chemical Formula

While comparing Sanidine and Austinite 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 Sanidine and Austinite chemical formula.

Chemical formula of Sanidine- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Austinite- CaZn(AsO4)(OH)

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Sanidine and Austinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sanidine and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sanidine and Austinite Optical Properties during the identification of gemstone. Specific gravity of Sanidine is 4.12 whereas that of Austinite is 4.12.