Pargasite and Opal Physical Properties
Tenacity
Not Available
BrittleWalter Schumann
Solubility
Not Available
hot salt water
Durability
Not Available
Not Available
Specific Gravity
3.04-3.26
1.98-2.25
Fracture
Splintery, Brittle, Uneven
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Cleavage
{110} perfect
None
Chemical Composition
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
SiO2 · nH2O
Pargasite and Opal Chemical Formula
While comparing Pargasite and Opal 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 Pargasite and Opal chemical formula.
- Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Opal- SiO2 · nH2O
Pargasite and Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pargasite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Opal Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 1.98-2.25 whereas that of Opal is 1.98-2.25.