Marialite and Sillimanite Physical Properties

Marialite and Sillimanite Chemical Formula

While comparing Marialite and Sillimanite 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 Marialite and Sillimanite chemical formula.

• Chemical formula of Marialite- 3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
• Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Marialite and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Marialite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Marialite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Marialite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.