Pollucite and Anhydrite Physical Properties

Pollucite

Anhydrite

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Physical Properties

Tenacity

Brittle

Solubility

Readily soluble in HF

Durability

Specific Gravity

2.86-2.942.90-2.98

1 7.18

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Fracture

Conchoidal, Uneven

Conchoidal

Cleavage

None observed

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

Mohs Hardness

6.5-73.5

2 10

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Chemical Composition

(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

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

Pollucite and Anhydrite Chemical Formula

While comparing Pollucite 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 Pollucite and Anhydrite chemical formula.

Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Anhydrite- CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare White Gemstones

Pollucite Vs Whitlockite

Pollucite Vs Witherite

Pollucite Vs Xonotlite

Pollucite and Anhydrite Specific Gravity

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