Pyrophyllite and Hardystonite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65-2.90
3.396-3.443
Fracture
Gemstones (2009), Flexible Flexible fragments.
Brittle, Metallic
Cleavage
{001} Perfect
[001] good, [100] and [110] fair
Mohs Hardness
Not Available
3-4
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Pyrophyllite and Hardystonite Chemical Formula
While comparing Pyrophyllite and Hardystonite 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 Hardystonite chemical formula.
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Pyrophyllite and Hardystonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.