Pyrophyllite and Goethite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
HCl soluble
Durability
Not Available
Not Available
Specific Gravity
2.65-2.90
4.27-4.29
Fracture
Gemstones (2009), Flexible Flexible fragments.
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Cleavage
{001} Perfect
Perfect {010}
Mohs Hardness
Not Available
5-5.5
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
FeO(OH)Arthur Thomas , Gemstones (2009)
Pyrophyllite and Goethite Chemical Formula
While comparing Pyrophyllite and Goethite 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 Goethite chemical formula.
- Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
Pyrophyllite and Goethite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Goethite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Goethite Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 4.27-4.29 whereas that of Goethite is 4.27-4.29.