Calcite and Pollucite Physical Properties

Calcite

Pollucite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Readily soluble in HF

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.732.86-2.94

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Perfect on [10 1 1] three directions with angle of 74° 55

None observed

1.7 Mohs Hardness

36.5-7

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

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

Calcite and Pollucite Chemical Formula

While comparing Calcite 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 Calcite and Pollucite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
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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Calcite and Pollucite Specific Gravity

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