Pollucite and Peridot Physical Properties
Tenacity
Brittle
Not Available
Solubility
Readily soluble in HF
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.86-2.94
1.54-1.55
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal
Cleavage
None observed
Poor
Mohs Hardness
6.5-7
6.5-7
Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
(Mg,Fe)2SiO4
Pollucite and Peridot Chemical Formula
While comparing Pollucite and Peridot 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 Peridot 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 Peridot- (Mg,Fe)2SiO4
Pollucite and Peridot Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pollucite and Peridot Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Peridot Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 1.54-1.55 whereas that of Peridot is 1.54-1.55.