Goethite and Brucite Physical Properties
Tenacity
Not Available
Sectile
Solubility
HCl soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.27-4.29
2.39
Fracture
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Irregular
Cleavage
Perfect {010}
Perfect on {0001}
Chemical Composition
FeO(OH)Arthur Thomas , Gemstones (2009)
Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Goethite and Brucite Chemical Formula
While comparing Goethite and Brucite 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 Goethite and Brucite chemical formula.
- Chemical formula of Goethite- FeO(OH)Arthur Thomas , Gemstones (2009)
- Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Goethite and Brucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Goethite and Brucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goethite and Brucite Optical Properties during the identification of gemstone. Specific gravity of Goethite is 2.39 whereas that of Brucite is 2.39.