Kornerupine and Austinite Physical Properties

Kornerupine

Austinite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Easily soluble in cold dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-3.454.12

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven

Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

Good on {110}

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

1.7 Mohs Hardness

6.54-4.5

2 10

1.8 Chemical Composition

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

CaZn(AsO4)(OH)

Kornerupine and Austinite Chemical Formula

While comparing Kornerupine 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 Kornerupine and Austinite chemical formula.

Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Austinite- CaZn(AsO4)(OH)

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Kornerupine and Austinite Specific Gravity

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