Austinite and Anhydrite Physical Properties

Austinite

Anhydrite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Easily soluble in cold dilute HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.122.90-2.98

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

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

Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.

1.7 Mohs Hardness

4-4.53.5

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Austinite and Anhydrite Chemical Formula

While comparing Austinite and Anhydrite 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 Anhydrite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Green Gemstones

Austinite Vs Clintonite

Austinite Vs Apophyllite KF

Austinite Vs Cordierite

Austinite and Anhydrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Anhydrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Anhydrite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.90-2.98 whereas that of Anhydrite is 2.90-2.98.