Verdelite and Herderite Physical Properties

Verdelite and Herderite Chemical Formula

While comparing Verdelite and Herderite 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 Verdelite and Herderite chemical formula.

• Chemical formula of Verdelite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
• Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Verdelite and Herderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Verdelite and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Verdelite and Herderite Optical Properties during the identification of gemstone. Specific gravity of Verdelite is 2.90-3.02 whereas that of Herderite is 2.90-3.02.