Pyrophyllite and Esperite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65-2.90
4.28-4.42
Fracture
Gemstones (2009), Flexible Flexible fragments.
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Metallic
Cleavage
{001} Perfect
Distinct on [010] and [100] poor on [101]
Mohs Hardness
Not Available
5-5.5
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Pyrophyllite and Esperite Chemical Formula
While comparing Pyrophyllite and Esperite 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 Esperite chemical formula.
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Pyrophyllite and Esperite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Esperite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Esperite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 4.28-4.42 whereas that of Esperite is 4.28-4.42.