Sillimanite and Bastnasite Physical Properties
Physical Properties
Tenacity
Tough
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
4.95-5.0
Fracture
Splintery
Uneven
Cleavage
{010} perfect
Imperfect to indistinct on {10 1 0}, parting on {0001}
Mohs Hardness
6-7.5
4-5
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sillimanite and Bastnasite Chemical Formula
While comparing Sillimanite and Bastnasite 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 Sillimanite and Bastnasite chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sillimanite and Bastnasite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Bastnasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Bastnasite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 4.95-5.0 whereas that of Bastnasite is 4.95-5.0.
