Labradorite and Pargasite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.72
3.04-3.26
Fracture
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Splintery, Brittle, Uneven
Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
{110} perfect
Chemical Composition
(Na,Ca)1-2Si3-2O8
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Labradorite and Pargasite Chemical Formula
While comparing Labradorite 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 Labradorite and Pargasite chemical formula.
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
- Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Labradorite and Pargasite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Labradorite and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.