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