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Austinite
Austinite

Brucite
Brucite



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Austinite
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Brucite

Austinite and Brucite Physical Properties

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Physical Properties

Tenacity

Brittle
Sectile

Solubility

Easily soluble in cold dilute HCl
-

Durability

-
-

Specific Gravity

4.122.39
1 7.18
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Fracture

Uneven
Irregular

Cleavage

Good in two directions parallel to the prism faces {110}
Perfect on {0001}

Mohs Hardness

4-4.52.5
2 10
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Chemical Composition

CaZn(AsO4)(OH)
Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Austinite and Brucite Chemical Formula

While comparing Austinite and Brucite 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 Brucite chemical formula.

  • Chemical formula of Austinite- CaZn(AsO4)(OH)
  • Chemical formula of Brucite- Mg(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Austinite and Brucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Brucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Brucite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.39 whereas that of Brucite is 2.39.