Dolomite and Pollucite Physical Properties

Dolomite

Pollucite

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Physical Properties

Tenacity

Brittle

Solubility

Poorly soluble in dilute HCl

Readily soluble in HF

Durability

Specific Gravity

2.80-2.952.86-2.94

1 7.18

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Fracture

Conchoidal

Conchoidal, Uneven

Cleavage

Perfect on {10 1 1}, rhombohedral cleavage

None observed

Mohs Hardness

3.5-46.5-7

2 10

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Chemical Composition

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

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

Dolomite and Pollucite Chemical Formula

While comparing Dolomite and Pollucite 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 Dolomite and Pollucite chemical formula.

Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

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Dolomite and Pollucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dolomite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dolomite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Dolomite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.