Pollucite and Smithsonite Physical Properties

Pollucite

Smithsonite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Readily soluble in HF

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.86-2.944.00-4.65

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Uneven, Sub-Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic

1.6 Cleavage

None observed

Perfect on [1011]

1.7 Mohs Hardness

6.5-75-5.5

2 10

1.8 Chemical Composition

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

ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pollucite and Smithsonite Chemical Formula

While comparing Pollucite and Smithsonite 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 Smithsonite 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 Smithsonite- ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare White Gemstones

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Pollucite Vs Rutilated Quartz

Pollucite Vs Sard

Pollucite and Smithsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pollucite and Smithsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Smithsonite Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 4.00-4.65 whereas that of Smithsonite is 4.00-4.65.