Plumbogummite and Pollucite Physical Properties

Plumbogummite

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

4.0142.86-2.94

1 7.18

1.5 Fracture

Uneven, Conchoidal

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

1.6 Cleavage

None

None observed

1.7 Mohs Hardness

4-56.5-7

2 10

1.8 Chemical Composition

Not Available

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

Plumbogummite and Pollucite Chemical Formula

While comparing Plumbogummite 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 Plumbogummite and Pollucite chemical formula.

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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Plumbogummite and Pollucite Specific Gravity

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