Pollucite and Dolomite Physical Properties

Pollucite

Dolomite

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Physical Properties

Tenacity

Brittle

Solubility

Readily soluble in HF

Poorly soluble in dilute HCl

Durability

Specific Gravity

2.86-2.942.80-2.95

1 7.18

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Fracture

Conchoidal, Uneven

Conchoidal

Cleavage

None observed

Perfect on {10 1 1}, rhombohedral cleavage

Mohs Hardness

6.5-73.5-4

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

CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pollucite and Dolomite Chemical Formula

While comparing Pollucite and Dolomite 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 Dolomite 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 Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare White Gemstones

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Pollucite Vs Witherite

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Pollucite and Dolomite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pollucite and Dolomite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Dolomite Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 2.80-2.95 whereas that of Dolomite is 2.80-2.95.