Zinnwaldite and Austinite Physical Properties

Zinnwaldite

Austinite

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1 Physical Properties

1.1 Tenacity

Elastic

Brittle

1.2 Solubility

Not Available

Easily soluble in cold dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

2.9-3.14.12

1 7.18

1.5 Fracture

Uneven

Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

Perfect basal {001}

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

1.7 Mohs Hardness

3.5-4.04-4.5

2 10

1.8 Chemical Composition

Not Available

CaZn(AsO4)(OH)

Zinnwaldite and Austinite Chemical Formula

While comparing Zinnwaldite 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 Zinnwaldite and Austinite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)

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Zinnwaldite and Austinite Specific Gravity

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