Thomsonite and Norbergite Physical Properties

Thomsonite and Norbergite Chemical Formula

While comparing Thomsonite and Norbergite 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 Thomsonite and Norbergite chemical formula.

• Chemical formula of Thomsonite- NaCa 2Al 5Si 5O 20 · 6H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
• Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

Thomsonite and Norbergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thomsonite and Norbergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thomsonite and Norbergite Optical Properties during the identification of gemstone. Specific gravity of Thomsonite is 3.177 whereas that of Norbergite is 3.177.