Anhydrite and Dolomite Physical Properties

Anhydrite

Dolomite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Poorly soluble in dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-2.982.80-2.95

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

Perfect on {10 1 1}, rhombohedral cleavage

1.7 Mohs Hardness

3.53.5-4

2 10

1.8 Chemical Composition

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

CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Anhydrite and Dolomite Chemical Formula

While comparing Anhydrite and Dolomite 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 Dolomite chemical formula.

Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Anhydrite and Dolomite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Dolomite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Dolomite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 2.80-2.95 whereas that of Dolomite is 2.80-2.95.