Hurlbutite and Biotite Physical Properties

Hurlbutite and Biotite Chemical Formula

While comparing Hurlbutite 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 Hurlbutite and Biotite chemical formula.

• Chemical formula of Hurlbutite- CaBe 2(PO 4) 2Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Biotite- K(Mg,Fe++)3[AlSi3O10(OH,F)2

Hurlbutite and Biotite Specific Gravity

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