Kyanite and Londonite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.53-3.65
3.34
Fracture
Splintery, Brittle, Metallic
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
[100] perfect [010] imperfect with 79° angle between
None
Mohs Hardness
4-7
Not Available
Chemical Composition
Not Available
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Kyanite and Londonite Chemical Formula
While comparing Kyanite and Londonite 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 Londonite chemical formula.
>- Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Kyanite and Londonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Kyanite and Londonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Londonite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.34 whereas that of Londonite is 3.34.