Pumpellyite and Pyrophyllite Physical Properties

Pumpellyite and Pyrophyllite Chemical Formula

While comparing Pumpellyite and Pyrophyllite 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 Pumpellyite and Pyrophyllite chemical formula.

• Chemical formula of Pumpellyite- Ca 2(Mg,Fe,Mn,Al) 2(SiO 4)(Si 2O 7)(OH) 2 · H 2OUlrich Henn and Claudio C.
• Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Pumpellyite and Pyrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pumpellyite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pumpellyite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Pumpellyite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.