Brazilianite and Sillimanite Physical Properties
Tenacity
Not Available
Tough
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.98-2.99
3.20-3.26
Fracture
Conchoidal, Gems
Splintery
Cleavage
(010) Distinct to good
{010} perfect
Chemical Composition
NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Brazilianite and Sillimanite Chemical Formula
While comparing Brazilianite and Sillimanite 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 Brazilianite and Sillimanite chemical formula.
- Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Brazilianite and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Brazilianite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brazilianite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Brazilianite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.