Augite and Anhydrite Physical Properties

Augite

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.19-3.562.90-2.98

1 7.18

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Fracture

Uneven, Conchoidal

Conchoidal

Cleavage

{110} Perfect, {010} Indistinct

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

Mohs Hardness

5.5-63.5

2 10

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Chemical Composition

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

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

Augite and Anhydrite Chemical Formula

While comparing Augite 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 Augite and Anhydrite chemical formula.

Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Green Gemstones

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Augite Vs Chlorapatite

Augite Vs Chlorastrolite

Augite and Anhydrite Specific Gravity

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