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Willemite
Willemite

Austinite
Austinite



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Willemite
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Austinite

Willemite and Austinite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
Easily soluble in cold dilute HCl

Durability

-
-

Specific Gravity

3.89-4.184.12
1 7.18
👆🏻

Fracture

Conchoidal, Uneven
Uneven

Cleavage

{0001}, {11 2 0} imperfect
Good in two directions parallel to the prism faces {110}

Mohs Hardness

5.54-4.5
2 10
👆🏻

Chemical Composition

Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
CaZn(AsO4)(OH)

Willemite and Austinite Chemical Formula

While comparing Willemite 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 Willemite and Austinite chemical formula.

  • Chemical formula of Willemite- Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Austinite- CaZn(AsO4)(OH)

Willemite and Austinite Specific Gravity

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