Pyrophyllite and Franklinite Physical Properties

Pyrophyllite and Franklinite Chemical Formula

While comparing Pyrophyllite 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 Pyrophyllite and Franklinite chemical formula.

• Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
• Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Pyrophyllite and Franklinite Specific Gravity

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