Austinite and Demantoid Physical Properties

Austinite

Demantoid

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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

4.123.77-3.95

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

Not Available

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

4-4.56.5

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Austinite and Demantoid Chemical Formula

While comparing Austinite and Demantoid 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 Demantoid chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

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Austinite and Demantoid Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Demantoid Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Demantoid Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.77-3.95 whereas that of Demantoid is 3.77-3.95.