Carletonite and Pollucite Physical Properties

Carletonite

Pollucite

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Physical Properties

Tenacity

Brittle

Solubility

Readily soluble in HF

Durability

Specific Gravity

2.452.86-2.94

1 7.18

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Fracture

Conchoidal

Conchoidal, Uneven

Cleavage

Perfect on {001}, good on {110}

None observed

Mohs Hardness

4-4.56.5-7

2 10

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Chemical Composition

KNa 4Ca 4Si 8O 18(CO 3) 4(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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

Carletonite and Pollucite Chemical Formula

While comparing Carletonite 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 Carletonite and Pollucite chemical formula.

Chemical formula of Carletonite- KNa 4Ca 4Si 8O 18(CO 3) 4(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
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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Carletonite and Pollucite Specific Gravity

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