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Austinite
Austinite

Powellite
Powellite



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Austinite
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Powellite

Austinite and Powellite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Easily soluble in cold dilute HCl
-

Durability

-
-

Specific Gravity

4.124.23
1 7.18
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Fracture

Uneven
Conchoidal

Cleavage

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

Mohs Hardness

4-4.53.5-4
2 10
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Chemical Composition

CaZn(AsO4)(OH)
CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Austinite and Powellite Chemical Formula

While comparing Austinite and Powellite 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 Powellite chemical formula.

  • Chemical formula of Austinite- CaZn(AsO4)(OH)
  • Chemical formula of Powellite- CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Austinite and Powellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Powellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Powellite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 4.23 whereas that of Powellite is 4.23.