Labradorite and Marcasite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.72
4.80-4.90
Fracture
Uneven, Conchoidal, Gems, Sixth Edition (2006)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven
Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
{010} Indistinct
Mohs Hardness
6-6.5
6-6.5
Chemical Composition
(Na,Ca)1-2Si3-2O8
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Labradorite and Marcasite Chemical Formula
While comparing Labradorite and Marcasite 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 Marcasite chemical formula.
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
- Chemical formula of Marcasite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Labradorite and Marcasite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Labradorite and Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Marcasite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 4.80-4.90 whereas that of Marcasite is 4.80-4.90.