Selenite and Poldervaartite Physical Properties

Selenite and Poldervaartite Chemical Formula

While comparing Selenite and Poldervaartite 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 Selenite and Poldervaartite chemical formula.

• Chemical formula of Selenite- CaSO4·2H2O
• Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

Selenite and Poldervaartite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Selenite and Poldervaartite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Selenite and Poldervaartite Optical Properties during the identification of gemstone. Specific gravity of Selenite is 2.91 whereas that of Poldervaartite is 2.91.