Topaz and Bastnasite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
4.95-5.0
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven
Cleavage
[001] Perfect
Imperfect to indistinct on {10 1 0}, parting on {0001}
Chemical Composition
Al2SiO4(F,OH)2
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Topaz and Bastnasite Chemical Formula
While comparing Topaz 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 Topaz and Bastnasite chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Bastnasite- (Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Topaz and Bastnasite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Bastnasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Bastnasite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 4.95-5.0 whereas that of Bastnasite is 4.95-5.0.