Phlogopite and Franklinite Physical Properties

Phlogopite and Franklinite Chemical Formula

While comparing Phlogopite 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 Phlogopite and Franklinite chemical formula.

• Chemical formula of Phlogopite- KMg3(Si3Al)O10(F,OH)2
• Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Phlogopite and Franklinite Specific Gravity

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