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Austinite
Austinite

Benitoite
Benitoite



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Austinite
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Austinite and Benitoite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Easily soluble in cold dilute HCl
Insoluble: HCl

Durability

-
-

Specific Gravity

4.123.61-3.68
1 7.18
👆🏻

Fracture

Uneven
Conchoidal

Cleavage

Good in two directions parallel to the prism faces {110}
[10 1 1] poor

Mohs Hardness

4-4.56-6.5
2 10
👆🏻

Chemical Composition

CaZn(AsO4)(OH)
BaTiSi 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Austinite and Benitoite Chemical Formula

While comparing Austinite and Benitoite 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 Benitoite chemical formula.

  • Chemical formula of Austinite- CaZn(AsO4)(OH)
  • Chemical formula of Benitoite- BaTiSi 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Austinite and Benitoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Benitoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Benitoite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.61-3.68 whereas that of Benitoite is 3.61-3.68.