Celestine and Austinite Physical Properties

Celestine

Austinite

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Physical Properties

Tenacity

Brittle

Solubility

Easily soluble in cold dilute HCl

Durability

Specific Gravity

3.90-4.004.12

1 7.18

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Fracture

Conchoidal

Uneven

Cleavage

Perfect on {001}, good on {210}, poor on {010}

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

Mohs Hardness

3-3.54-4.5

2 10

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Chemical Composition

SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

CaZn(AsO4)(OH)

Celestine and Austinite Chemical Formula

While comparing Celestine 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 Celestine and Austinite chemical formula.

Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Austinite- CaZn(AsO4)(OH)

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Celestine and Austinite Specific Gravity

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