Phenakite and Pyrophyllite Physical Properties
Specific Gravity
2.90-2.98
2.65-2.90
Fracture
Conchoidal, ConchoidalWalter Schumann
-
Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}
{001} Perfect
Mohs Hardness
7.5-8
-9999
Chemical Composition
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Phenakite and Pyrophyllite Chemical Formula
While comparing Phenakite and Pyrophyllite 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 Phenakite and Pyrophyllite chemical formula.
- Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Phenakite and Pyrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phenakite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.