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Zincite
Zincite

Austinite
Austinite



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Zincite
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Austinite

Zincite and Austinite Physical Properties

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Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
Easily soluble in cold dilute HCl

Durability

-
-

Specific Gravity

5.50-5.904.12
1 7.18
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Fracture

Conchoidal
Uneven

Cleavage

On {10 1 0}, perfect; parting on {000 1 }
Good in two directions parallel to the prism faces {110}

Mohs Hardness

44-4.5
2 10
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Chemical Composition

(Zn,Mn2+ )OMichael O’Donoghue , Gems, Sixth Edition (2006)
CaZn(AsO4)(OH)

Zincite and Austinite Chemical Formula

While comparing Zincite 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 Zincite and Austinite chemical formula.

  • Chemical formula of Zincite- (Zn,Mn2+ )OMichael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Austinite- CaZn(AsO4)(OH)

Zincite and Austinite Specific Gravity

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