Caledonite and Pollucite Physical Properties
Solubility
-
Readily soluble in HF
Specific Gravity
5.6-5.76
2.86-2.94
Fracture
Uneven
Conchoidal, Uneven
Cleavage
[001] perfect; [100] distinct
None observed
Mohs Hardness
2.5-3
6.5-7
Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Caledonite and Pollucite Chemical Formula
While comparing Caledonite 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 Caledonite and Pollucite chemical formula.
- Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Caledonite and Pollucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Caledonite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.