Marcasite and Quartz Physical Properties

Marcasite and Quartz Chemical Formula

While comparing Marcasite and Quartz 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 Quartz chemical formula.

• Chemical formula of Marcasite- FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
• Chemical formula of Quartz- SiO₂

Marcasite and Quartz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Marcasite and Quartz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Marcasite and Quartz Optical Properties during the identification of gemstone. Specific gravity of Marcasite is 2.65 whereas that of Quartz is 2.65.