Austinite and Gahnospinel Physical Properties

Austinite

Gahnospinel

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Easily soluble in cold dilute HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.123.65-4.55

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

None, but may exhibit slight parting

1.7 Mohs Hardness

4-4.57.5-8

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Austinite and Gahnospinel Chemical Formula

While comparing Austinite and Gahnospinel 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 Gahnospinel chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Austinite and Gahnospinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Austinite is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.