Ettringite and Binghamite Physical Properties

Ettringite and Binghamite Chemical Formula

While comparing Ettringite and Binghamite 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 Ettringite and Binghamite chemical formula.

• Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Binghamite- SiO 2Arthur Thomas , Gemstones (2009)

Ettringite and Binghamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Binghamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Binghamite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 2.55-2.70 whereas that of Binghamite is 2.55-2.70.