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Austinite
Austinite

Obsidian
Obsidian



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Austinite
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Obsidian

Austinite and Obsidian Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Easily soluble in cold dilute HCl
-

Durability

-
-

Specific Gravity

4.122.35-2.60
1 7.18
👆🏻

Fracture

Uneven
Conchoidal, ConchoidalWalter Schumann

Cleavage

Good in two directions parallel to the prism faces {110}
None

Mohs Hardness

4-4.55-5.5
2 10
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Chemical Composition

CaZn(AsO4)(OH)
SiO2

Austinite and Obsidian Chemical Formula

While comparing Austinite and Obsidian 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 Obsidian chemical formula.

  • Chemical formula of Austinite- CaZn(AsO4)(OH)
  • Chemical formula of Obsidian- SiO2

Austinite and Obsidian Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.