Austinite and Gahnite Physical Properties

Austinite

Gahnite

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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

4.124.00-4.62

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

Conchoidal, Uneven

1.6 Cleavage

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

Indistinct parting on [111]

1.7 Mohs Hardness

4-4.57.5-8

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Austinite and Gahnite Chemical Formula

While comparing Austinite and Gahnite 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 Gahnite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

Austinite Vs Clintonite

Austinite Vs Apophyllite KF

Austinite Vs Cordierite

Austinite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.