Poldervaartite and Achroite Physical Properties

Poldervaartite and Achroite Chemical Formula

While comparing Poldervaartite and Achroite 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 Poldervaartite and Achroite chemical formula.

• Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)
• Chemical formula of Achroite- 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.

Poldervaartite and Achroite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Poldervaartite and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poldervaartite and Achroite Optical Properties during the identification of gemstone. Specific gravity of Poldervaartite is 2.90-3.40 whereas that of Achroite is 2.90-3.40.