Pollucite and Cavansite Physical Properties
Solubility
Readily soluble in HF
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.86-2.94
2.25-2.33
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Brittle, Metallic, Brittle, Metallic
Cleavage
None observed
Good on {010}
Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Ca(VO)Si4O10•4(H2O)
Pollucite and Cavansite Chemical Formula
While comparing Pollucite and Cavansite 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 Cavansite 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 Cavansite- Ca(VO)Si4O10•4(H2O)
Pollucite and Cavansite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pollucite and Cavansite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Cavansite Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 2.25-2.33 whereas that of Cavansite is 2.25-2.33.