Franklinite and Schorl Physical Properties

Franklinite and Schorl Chemical Formula

While comparing Franklinite and Schorl 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 Franklinite and Schorl chemical formula.

• Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
• Chemical formula of Schorl- Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Franklinite and Schorl Specific Gravity

Another important criteria for qualitative analysis of gemstones is Franklinite and Schorl Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Franklinite and Schorl Optical Properties during the identification of gemstone. Specific gravity of Franklinite is 3.18-3.22 whereas that of Schorl is 3.18-3.22.