Thomsonite and Pollucite Physical Properties
Solubility
-
Readily soluble in HF
Specific Gravity
2.25-2.40
2.86-2.94
Fracture
-
Conchoidal, Uneven
Cleavage
perfect on {010}; good on {100}
None observed
Mohs Hardness
5-5.5
6.5-7
Chemical Composition
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Thomsonite and Pollucite Chemical Formula
While comparing Thomsonite 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 Thomsonite and Pollucite chemical formula.
- Chemical formula of Thomsonite- NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Thomsonite and Pollucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Thomsonite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thomsonite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Thomsonite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.