Pargasite and Corundum Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
3.04-3.26
3.90-4.05
Fracture
Splintery, Brittle, Uneven
Uneven, Uneven, Gems, Difficult, Fibrous
Cleavage
{110} perfect
None – parting in 3 directions
Chemical Composition
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Al 2O 3Arthur Thomas , Gemstones (2009)
Pargasite and Corundum Chemical Formula
While comparing Pargasite and Corundum 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 Corundum chemical formula.
- Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Pargasite and Corundum Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pargasite and Corundum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Corundum Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 3.90-4.05 whereas that of Corundum is 3.90-4.05.