Poudretteite and Pollucite Physical Properties

Poudretteite

Pollucite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Readily soluble in HF

1.3 Durability

Not Available

1.4 Specific Gravity

2.51-2.532.86-2.94

1 7.18

1.5 Fracture

Conchoidal, Splintery

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

1.6 Cleavage

None

None observed

1.7 Mohs Hardness

56.5-7

2 10

1.8 Chemical Composition

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Poudretteite and Pollucite Chemical Formula

While comparing Poudretteite 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 Poudretteite and Pollucite chemical formula.

Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael 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

Compare Violet Gemstones

Poudretteite Vs Rutilated Quartz

Poudretteite Vs Sapphire

Poudretteite Vs Rubellite

Poudretteite and Pollucite Specific Gravity

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