Staurolite and Goethite Physical Properties

Staurolite and Goethite Chemical Formula

While comparing Staurolite and Goethite 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 Staurolite and Goethite chemical formula.

• Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
• Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)

Staurolite and Goethite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Staurolite and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Goethite Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 4.27-4.29 whereas that of Goethite is 4.27-4.29.