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Feldspar and Londonite Physical Properties


Londonite and Feldspar Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.56-2.75   
3.34   

Fracture
Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)   
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal   

Cleavage
two or three   
None   

Mohs Hardness
6-6.5   
Not Available   

Chemical Composition
Not Available   
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)   

Optical Properties >>
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Feldspar and Londonite Chemical Formula

While comparing Feldspar 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 Feldspar and Londonite chemical formula.

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Feldspar and Londonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Feldspar and Londonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Feldspar and Londonite Optical Properties during the identification of gemstone. Specific gravity of Feldspar is 3.34 whereas that of Londonite is 3.34.

Green Gemstones

Green Gemstones


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