Scapolite and Biotite Physical Properties

Scapolite and Biotite Chemical Formula

While comparing Scapolite 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 Scapolite and Biotite chemical formula.

• Chemical formula of Scapolite- Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references
• Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

Scapolite and Biotite Specific Gravity

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