Fluorite and Anhydrite Physical Properties

Fluorite

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

slightly water soluble and in hot hydrochloric acid

Durability

Specific Gravity

3.00-3.252.90-2.98

1 7.18

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Fracture

Subconchoidal, Uneven, ConchoidalWalter Schumann

Conchoidal

Cleavage

Octahedral, perfect on {111}, parting on {011}

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

Mohs Hardness

43.5

2 10

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Chemical Composition

CaF₂

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

Fluorite and Anhydrite Chemical Formula

While comparing Fluorite 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 Fluorite and Anhydrite chemical formula.

Chemical formula of Fluorite- CaF₂
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Fluorite and Anhydrite Specific Gravity

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