Anhydrite and Wulfenite Physical Properties

Anhydrite

Wulfenite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.90-2.986.50-7.00

1 7.18

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Fracture

Conchoidal

Irregular, Conchoidal

Cleavage

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

On {011}, distinct; on {001}, {013}, indistinct

Mohs Hardness

3.53

2 10

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Chemical Composition

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

PbMoO 4Walter Schumann , Gemstones of the world (2001)

Anhydrite and Wulfenite Chemical Formula

While comparing Anhydrite and Wulfenite 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 Wulfenite chemical formula.

Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)

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Anhydrite and Wulfenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Anhydrite and Wulfenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anhydrite and Wulfenite Optical Properties during the identification of gemstone. Specific gravity of Anhydrite is 6.50-7.00 whereas that of Wulfenite is 6.50-7.00.