Cordierite Iolite and Londonite Physical Properties

Cordierite Iolite and Londonite Chemical Formula

While comparing Cordierite Iolite and Londonite 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 Cordierite Iolite and Londonite chemical formula.

• Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
• Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)

Cordierite Iolite and Londonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cordierite Iolite and Londonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite Iolite and Londonite Optical Properties during the identification of gemstone. Specific gravity of Cordierite Iolite is 3.34 whereas that of Londonite is 3.34.