Phlogopite and Staurolite Physical Properties

Phlogopite and Staurolite Chemical Formula

While comparing Phlogopite and Staurolite 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 Staurolite chemical formula.

• Chemical formula of Phlogopite- KMg3(Si3Al)O10(F,OH)2
• Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

Phlogopite and Staurolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phlogopite and Staurolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phlogopite and Staurolite Optical Properties during the identification of gemstone. Specific gravity of Phlogopite is 3.7-3.8 whereas that of Staurolite is 3.7-3.8.