Pollucite and Diaspore Physical Properties

Pollucite

Diaspore

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1 Physical Properties

1.1 Tenacity

Brittle

Very brittle

1.2 Solubility

Readily soluble in HF

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.86-2.943.30-3.40

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

None observed

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

6.5-76.5-7

2 10

1.8 Chemical Composition

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

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Pollucite and Diaspore Chemical Formula

While comparing Pollucite and Diaspore 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 Diaspore 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 Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Compare White Gemstones

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Pollucite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pollucite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.