Feldspar and Spinel Physical Properties

Feldspar and Spinel Chemical Formula

While comparing Feldspar and Spinel 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 Feldspar and Spinel chemical formula.

• Chemical formula of Feldspar- KAlSi3O8
• Chemical formula of Spinel- MgAl₂O₄

Feldspar and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Feldspar and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Feldspar and Spinel Optical Properties during the identification of gemstone. Specific gravity of Feldspar is 3.64-3.66 whereas that of Spinel is 3.64-3.66.