Pyrophyllite and Apophyllite Physical Properties

Pyrophyllite and Apophyllite Chemical Formula

While comparing Pyrophyllite and Apophyllite 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 Pyrophyllite and Apophyllite chemical formula.

• Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
• Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Pyrophyllite and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.