Williamsite and Rossmanite Physical Properties

Williamsite and Rossmanite Chemical Formula

While comparing Williamsite and Rossmanite 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 Williamsite and Rossmanite chemical formula.

• Chemical formula of Williamsite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
• Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Williamsite and Rossmanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Williamsite and Rossmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Williamsite and Rossmanite Optical Properties during the identification of gemstone. Specific gravity of Williamsite is 3 whereas that of Rossmanite is 3.