Anhydrite and Chromite Physical Properties

Anhydrite

Chromite

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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

2.90-2.984.5-4.8

1 7.18

1.5 Fracture

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

Uneven

1.6 Cleavage

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

None, parting may develop along {111}

1.7 Mohs Hardness

3.55.5

2 10

1.8 Chemical Composition

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

Fe++Cr2O4

Anhydrite and Chromite Chemical Formula

While comparing Anhydrite and Chromite 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 Chromite chemical formula.

Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Chromite- Fe++Cr2O4

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Anhydrite and Chromite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Chromite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 4.5-4.8 whereas that of Chromite is 4.5-4.8.