Pollucite and Sellaite Physical Properties

Pollucite

Sellaite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Brittle

Readily soluble in HF

2.86-2.94

Conchoidal, Uneven

None observed

6.5-7

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

Brittle

3.14-3.16

Conchoidal

Perfect on {010} and {110}

5-5.5

MgF 2Ulrich Henn and Claudio C.

Pollucite and Sellaite Chemical Formula

While comparing Pollucite and Sellaite 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 Sellaite chemical formula.

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Pollucite and Sellaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pollucite and Sellaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite Vs Sellaite during the identification of gemstone. Specific gravity of Pollucite is whereas that of Sellaite is .