Pumpellyite and Franklinite Physical Properties

Pumpellyite and Franklinite Chemical Formula

While comparing Pumpellyite and Franklinite 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 Franklinite 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 Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Pumpellyite and Franklinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pumpellyite and Franklinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pumpellyite and Franklinite Optical Properties during the identification of gemstone. Specific gravity of Pumpellyite is 5.05-5.22 whereas that of Franklinite is 5.05-5.22.