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Shigaite
Shigaite

Austinite
Austinite



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Shigaite
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Austinite

Shigaite and Austinite Physical Properties

Physical Properties

Tenacity

Moderately flexible
Brittle

Solubility

-
Easily soluble in cold dilute HCl

Durability

-
-

Specific Gravity

2.324.12
1 7.18
👆🏻

Fracture

-
Uneven

Cleavage

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

Mohs Hardness

24-4.5
2 10
👆🏻

Chemical Composition

Pb6Cu3BiS4
CaZn(AsO4)(OH)

Shigaite and Austinite Chemical Formula

While comparing Shigaite 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 Shigaite and Austinite chemical formula.

  • Chemical formula of Shigaite- Pb6Cu3BiS4
  • Chemical formula of Austinite- CaZn(AsO4)(OH)

Shigaite and Austinite Specific Gravity

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