Londonite and Sylvite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.34
1.993
Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Uneven, Brittle
Cleavage
None
Perfect on [100], [010], [001]
Mohs Hardness
Not Available
2.5
Chemical Composition
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Not Available
Londonite and Sylvite Chemical Formula
While comparing Londonite and Sylvite 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 Londonite and Sylvite chemical formula.
- Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
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Londonite and Sylvite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Londonite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Londonite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Londonite is 1.993 whereas that of Sylvite is 1.993.