Pyrophyllite and Cordierite Iolite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65-2.90
2.56-2.66
Fracture
Gemstones (2009), Flexible Flexible fragments.
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
{001} Perfect
Not Available
Mohs Hardness
Not Available
7-7.5
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Pyrophyllite and Cordierite Iolite Chemical Formula
While comparing Pyrophyllite and Cordierite Iolite 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 Cordierite Iolite chemical formula.
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Cordierite Iolite- Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Pyrophyllite and Cordierite Iolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Cordierite Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Cordierite Iolite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 2.56-2.66 whereas that of Cordierite Iolite is 2.56-2.66.