Phlogopite and Pleonaste Physical Properties

Phlogopite and Pleonaste Chemical Formula

While comparing Phlogopite and Pleonaste 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 Phlogopite and Pleonaste chemical formula.

• Chemical formula of Phlogopite- KMg3(Si3Al)O10(F,OH)2
• Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Phlogopite and Pleonaste Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phlogopite and Pleonaste Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phlogopite and Pleonaste Optical Properties during the identification of gemstone. Specific gravity of Phlogopite is 3.80 whereas that of Pleonaste is 3.80.