Brucite and Fayalite Physical Properties
Tenacity
Sectile
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.39
  
4.392
  
Fracture
Irregular
  
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Cleavage
Perfect on {0001}
  
{010} moderate, {100} imperfect
  
Mohs Hardness
2.5
  
6.5-7
  
Chemical Composition
Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Brucite and Fayalite Chemical Formula
While comparing Brucite and Fayalite 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 Brucite and Fayalite chemical formula.
- Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Brucite and Fayalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Brucite and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brucite and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Brucite is 4.392 whereas that of Fayalite is 4.392.