Elbaite and Brookite Physical Properties
Specific Gravity
2.90-3.10
3.87-4.14
Fracture
Uneven, Conchoidal
Subconchoidal, Conchoidal
Cleavage
Poor/indistinct on {1120} and {1011}
Poor on {120}, in traces on {001}
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Elbaite and Brookite Chemical Formula
While comparing Elbaite 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 Elbaite and Brookite chemical formula.
- Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
- Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Elbaite and Brookite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Elbaite and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Elbaite and Brookite Optical Properties during the identification of gemstone. Specific gravity of Elbaite is 3.87-4.14 whereas that of Brookite is 3.87-4.14.