Anhydrite and Colemanite Physical Properties

Anhydrite

Colemanite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.90-2.982.40-2.42

1 7.18

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Fracture

Conchoidal

Cleavage

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

{010} Perfect, {001} Distinct

Mohs Hardness

3.54.5

2 10

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Chemical Composition

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

Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Anhydrite and Colemanite Chemical Formula

While comparing Anhydrite and Colemanite 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 Colemanite chemical formula.

Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

Anhydrite Vs Aragonite

Anhydrite Vs Augelite

Anhydrite Vs Axinite

Anhydrite and Colemanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Colemanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Colemanite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2.40-2.42 whereas that of Colemanite is 2.40-2.42.