Wernerite and Pollucite Physical Properties
Solubility
-
Readily soluble in HF
Specific Gravity
2.50-2.80
2.86-2.94
Fracture
-
Conchoidal, Uneven
Cleavage
Perfect
None observed
Mohs Hardness
5-6.5
6.5-7
Chemical Composition
Na 4(Al,Si) 12O 24Cl to Ca 4(Si,Al) 12O 24(CO 3,SO 4)Arthur Thomas , Gemstones (2009)
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Wernerite and Pollucite Chemical Formula
While comparing Wernerite 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 Wernerite and Pollucite chemical formula.
- Chemical formula of Wernerite- Na 4(Al,Si) 12O 24Cl to Ca 4(Si,Al) 12O 24(CO 3,SO 4)Arthur Thomas , Gemstones (2009)
- Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Wernerite and Pollucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Wernerite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wernerite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Wernerite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.