Cordierite Iolite and Staurolite Physical Properties

Cordierite Iolite and Staurolite Chemical Formula

While comparing Cordierite Iolite 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 Cordierite Iolite and Staurolite chemical formula.

• Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
• Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

Cordierite Iolite and Staurolite Specific Gravity

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