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