Marcasite and Williamsite Physical Properties

Marcasite and Williamsite Chemical Formula

While comparing Marcasite and Williamsite 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 Williamsite chemical formula.

• Chemical formula of Marcasite- FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
• Chemical formula of Williamsite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Marcasite and Williamsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Marcasite and Williamsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Marcasite and Williamsite Optical Properties during the identification of gemstone. Specific gravity of Marcasite is 2.51-2.63 whereas that of Williamsite is 2.51-2.63.