Brookite and Mellite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.87-4.14
  
1.58-1.60
  
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Cleavage
Poor on {120}, in traces on {001}
  
{011} Imperfect
  
Mohs Hardness
5.5-6
  
2
  
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
  
Brookite and Mellite Chemical Formula
While comparing Brookite and Mellite 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 Brookite and Mellite chemical formula.
- Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
Brookite and Mellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Brookite and Mellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Mellite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 1.58-1.60 whereas that of Mellite is 1.58-1.60.