Ulexite and Pollucite Physical Properties
Solubility
-
Readily soluble in HF
Specific Gravity
1.65-1.99
2.86-2.94
Fracture
Uneven
Conchoidal, Uneven
Cleavage
{010} Perfect, {110} Perfect
None observed
Mohs Hardness
2-2.5
6.5-7
Chemical Composition
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Ulexite and Pollucite Chemical Formula
While comparing Ulexite 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 Ulexite and Pollucite chemical formula.
- Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Ulexite and Pollucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ulexite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ulexite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Ulexite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.