Cryolite and Austinite Physical Properties

Cryolite

Austinite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Easily soluble in cold dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

2.974.12

1 7.18

1.5 Fracture

Uneven

Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

None observed

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

1.7 Mohs Hardness

2.54-4.5

2 10

1.8 Chemical Composition

Na 3AlF 6Ulrich Henn and Claudio C.

CaZn(AsO4)(OH)

Cryolite and Austinite Chemical Formula

While comparing Cryolite 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 Cryolite and Austinite chemical formula.

Chemical formula of Cryolite- Na 3AlF 6Ulrich Henn and Claudio C.
Chemical formula of Austinite- CaZn(AsO4)(OH)

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Cryolite and Austinite Specific Gravity

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