Pollucite and Smithsonite Physical Properties
Solubility
Readily soluble in HF
-
Specific Gravity
2.86-2.94
4.00-4.65
Fracture
Conchoidal, Uneven
Uneven, Sub-Conchoidal
Cleavage
None observed
Perfect on [1011]
Mohs Hardness
6.5-7
5-5.5
Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pollucite and Smithsonite Chemical Formula
While comparing Pollucite and Smithsonite 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 Smithsonite 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 Smithsonite- ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pollucite and Smithsonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pollucite and Smithsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Smithsonite Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 4.00-4.65 whereas that of Smithsonite is 4.00-4.65.