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