Esperite and Pollucite Physical Properties
Solubility
-
Readily soluble in HF
Specific Gravity
4.28-4.42
2.86-2.94
Fracture
Conchoidal
Conchoidal, Uneven
Cleavage
Distinct on [010] and [100] poor on [101]
None observed
Mohs Hardness
5-5.5
6.5-7
Chemical Composition
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Esperite and Pollucite Chemical Formula
While comparing Esperite 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 Esperite and Pollucite chemical formula.
- Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony 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
Esperite and Pollucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Esperite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Esperite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Esperite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.