Omphacite and Marcasite Physical Properties

Omphacite and Marcasite Chemical Formula

While comparing Omphacite 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 Omphacite and Marcasite chemical formula.

• Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
• Chemical formula of Marcasite- FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Omphacite and Marcasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Omphacite and Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Omphacite and Marcasite Optical Properties during the identification of gemstone. Specific gravity of Omphacite is 4.80-4.90 whereas that of Marcasite is 4.80-4.90.