Variscite and Bytownite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.42-2.58
2.72-2.75
Fracture
Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
Cleavage
[010] perfect
Perfect on [001], good on [010], imperfect on [110]
Chemical Composition
AlPO4 · 2(H2O)
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Variscite and Bytownite Chemical Formula
While comparing Variscite and Bytownite 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 Variscite and Bytownite chemical formula.
- Chemical formula of Variscite- AlPO4 · 2(H2O)
- Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Variscite and Bytownite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Variscite and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Variscite and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Variscite is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.