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Austinite
Austinite

Blue John
Blue John



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Austinite
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Blue John

Austinite and Blue John Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
Easily soluble in cold dilute HCl
-
4.12
Uneven
Good in two directions parallel to the prism faces {110}
4-4.5
CaZn(AsO4)(OH)
 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Austinite and Blue John Chemical Formula

While comparing Austinite and Blue John 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 Blue John chemical formula.

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Austinite and Blue John Specific Gravity

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