Austinite and Hematite Physical Properties

Austinite

Hematite

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Physical Properties

Tenacity

Brittle

Solubility

Easily soluble in cold dilute HCl

Durability

Specific Gravity

4.125.00-5.30

1 7.18

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Fracture

Uneven

Uneven, ConchoidalWalter Schumann, Conchoidal

Cleavage

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

None, may show partings on {0001} and {10 1 1}

Mohs Hardness

4-4.56

2 10

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Chemical Composition

CaZn(AsO4)(OH)

Fe 2O 3Arthur Thomas , Gemstones (2009)

Austinite and Hematite Chemical Formula

While comparing Austinite and Hematite 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 Hematite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

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Austinite and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Hematite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 5.00-5.30 whereas that of Hematite is 5.00-5.30.