Bertrandite and Brookite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.59-2.60
  
3.87-4.14
  
Fracture
Brittle, Metallic, Brittle, Metallic
  
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Cleavage
{001} Perfect, {110} Distinct, {101} Distinct
  
Poor on {120}, in traces on {001}
  
Mohs Hardness
6-7
  
5.5-6
  
Chemical Composition
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
  
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Bertrandite and Brookite Chemical Formula
While comparing Bertrandite and Brookite 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 Bertrandite and Brookite chemical formula.
- Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Bertrandite and Brookite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bertrandite and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Brookite Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 3.87-4.14 whereas that of Brookite is 3.87-4.14.