Austinite and Ajoite Physical Properties

Austinite

Ajoite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Easily soluble in cold dilute HCl

Decomposed by acids

1.3 Durability

Not Available

1.4 Specific Gravity

4.122.96

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

Not Available

1.6 Cleavage

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

Perfect on {010}

1.7 Mohs Hardness

4-4.55

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

(K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

Austinite and Ajoite Chemical Formula

While comparing Austinite and Ajoite 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 Ajoite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Ajoite- (K,Na)3Cu20Al3Si29O76(OH)16•~8(H2O)

Compare Green Gemstones

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Austinite Vs Cordierite

Austinite Vs Apophyllite KF

Austinite and Ajoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Ajoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Ajoite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.96 whereas that of Ajoite is 2.96.