Selenite and Pumpellyite Physical Properties

Selenite and Pumpellyite Chemical Formula

While comparing Selenite and Pumpellyite 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 Pumpellyite chemical formula.

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• Chemical formula of Pumpellyite- Ca 2(Mg,Fe,Mn,Al) 2(SiO 4)(Si 2O 7)(OH) 2 · H 2OUlrich Henn and Claudio C.

Selenite and Pumpellyite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Selenite and Pumpellyite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Selenite and Pumpellyite Optical Properties during the identification of gemstone. Specific gravity of Selenite is 3.20-3.30 whereas that of Pumpellyite is 3.20-3.30.