Kyanite and Povondraite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.53-3.65
3.26
Fracture
Splintery, Brittle, Metallic
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Cleavage
[100] perfect [010] imperfect with 79° angle between
None
Mohs Hardness
4-7
Not Available
Chemical Composition
Not Available
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Kyanite and Povondraite Chemical Formula
While comparing Kyanite and Povondraite 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 Kyanite and Povondraite chemical formula.
>- Chemical formula of Povondraite- NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Kyanite and Povondraite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Kyanite and Povondraite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Povondraite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.26 whereas that of Povondraite is 3.26.