Chlorastrolite and Herderite Physical Properties

Chlorastrolite and Herderite Chemical Formula

While comparing Chlorastrolite 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 Chlorastrolite and Herderite chemical formula.

• Chemical formula of Chlorastrolite- Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)
• Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.

Chlorastrolite and Herderite Specific Gravity

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