Wulfenite and Anhydrite Physical Properties

Wulfenite

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

6.50-7.002.90-2.98

1 7.18

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Fracture

Irregular, Conchoidal

Conchoidal

Cleavage

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

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

Mohs Hardness

33.5

2 10

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Chemical Composition

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

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

Wulfenite and Anhydrite Chemical Formula

While comparing Wulfenite 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 Wulfenite and Anhydrite chemical formula.

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

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Wulfenite and Anhydrite Specific Gravity

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