Austinite and Andradite Garnet Physical Properties

Austinite

Andradite Garnet

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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

4.123.8-3.9

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}

None

1.7 Mohs Hardness

4-4.56.5-7.5

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

Ca₃Fe³⁺₂Si₃O₁₂

Austinite and Andradite Garnet Chemical Formula

While comparing Austinite and Andradite Garnet 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 Andradite Garnet chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂

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Austinite and Andradite Garnet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Andradite Garnet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Andradite Garnet Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.8-3.9 whereas that of Andradite Garnet is 3.8-3.9.