Tanzanite and Foitite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
3.35
3.17
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Handbook of mineralogy (2001)
Cleavage
Perfect {010}, imperfect {100}
None
Chemical Composition
Ca2Al3(SiO4)3(OH)
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Tanzanite and Foitite Chemical Formula
While comparing Tanzanite and Foitite 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 Tanzanite and Foitite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Foitite- Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Tanzanite and Foitite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Foitite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Foitite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.17 whereas that of Foitite is 3.17.