Rossmanite and Hackmanite Physical Properties

Rossmanite and Hackmanite Chemical Formula

While comparing Rossmanite and Hackmanite 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 Rossmanite and Hackmanite chemical formula.

• Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
• Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Rossmanite and Hackmanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rossmanite and Hackmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rossmanite and Hackmanite Optical Properties during the identification of gemstone. Specific gravity of Rossmanite is 2.27-2.33 whereas that of Hackmanite is 2.27-2.33.