Albite and Anhydrite Physical Properties

Albite

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.60-2.652.90-2.98

1 7.18

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Fracture

Uneven, Conchoidal

Conchoidal

Cleavage

Perfect on {001}, very good on {010}, imperfect on {110}

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

Mohs Hardness

6-6.53.5

2 10

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Chemical Composition

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Albite and Anhydrite Chemical Formula

While comparing Albite 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 Albite and Anhydrite chemical formula.

Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Albite and Anhydrite Specific Gravity

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