Angelite and Biotite Physical Properties

Angelite and Biotite Chemical Formula

While comparing Angelite and Biotite 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 Angelite and Biotite chemical formula.

• Chemical formula of Angelite- CaSO4·2H2O
• Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

Angelite and Biotite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Angelite and Biotite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Angelite and Biotite Optical Properties during the identification of gemstone. Specific gravity of Angelite is 2.7-3.3 whereas that of Biotite is 2.7-3.3.