Anhydrite and Albite Physical Properties

Anhydrite

Albite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-2.982.60-2.65

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

1.6 Cleavage

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

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

1.7 Mohs Hardness

3.56-6.5

2 10

1.8 Chemical Composition

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

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

Anhydrite and Albite Chemical Formula

While comparing Anhydrite and Albite 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 Anhydrite and Albite chemical formula.

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

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Anhydrite and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Albite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2.60-2.65 whereas that of Albite is 2.60-2.65.