Pollucite and Omphacite Physical Properties
Solubility
Readily soluble in HF
-
Specific Gravity
2.86-2.94
3.16-3.43
Fracture
Conchoidal, Uneven
Uneven, Conchoidal
Cleavage
None observed
{110} Good, {110} Good
Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Pollucite and Omphacite Chemical Formula
While comparing Pollucite and Omphacite 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 Omphacite 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 Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Pollucite and Omphacite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pollucite and Omphacite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Omphacite Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 3.16-3.43 whereas that of Omphacite is 3.16-3.43.