Pyrophyllite and Sugilite Physical Properties
Specific Gravity
2.65-2.90
2.69-2.79
Cleavage
{001} Perfect
Poor on {0001}
Mohs Hardness
-9999
5.5-6.5
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pyrophyllite and Sugilite Chemical Formula
While comparing Pyrophyllite and Sugilite 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 Sugilite chemical formula.
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pyrophyllite and Sugilite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.