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