Pollucite and Aragonite Physical Properties
Solubility
Readily soluble in HF
Dilute acid
Specific Gravity
2.86-2.94
2.93-2.96
Fracture
Conchoidal, Uneven
Subconchoidal, Conchoidal
Cleavage
None observed
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
6.5-7
3.5-4
Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pollucite and Aragonite Chemical Formula
While comparing Pollucite and Aragonite 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 Aragonite 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 Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pollucite and Aragonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pollucite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.