Hercynite and Pyrophyllite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.39
2.65-2.90
Fracture
ConchoidalGemdat.org, Uneven
Gemstones (2009), Flexible Flexible fragments.
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
{001} Perfect
Mohs Hardness
7.5-8
Not Available
Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Hercynite and Pyrophyllite Chemical Formula
While comparing Hercynite 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 Hercynite and Pyrophyllite chemical formula.
- Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Hercynite and Pyrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hercynite and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.