Pyrophyllite and Atacamite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65-2.90
3.745-3.776
Fracture
Gemstones (2009), Flexible Flexible fragments.
Conchoidal, Conchoidal, Brittle
Cleavage
{001} Perfect
Perfect on {010}, fair on {101}
Mohs Hardness
Not Available
3-3.5
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cu2Cl(OH)3
Pyrophyllite and Atacamite Chemical Formula
While comparing Pyrophyllite and Atacamite 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 Atacamite chemical formula.
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Atacamite- Cu2Cl(OH)3
Pyrophyllite and Atacamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.