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Londonite
Londonite

Sellaite
Sellaite



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Londonite
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Sellaite

Londonite and Sellaite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.34
Conchoidal
None
-9999
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
 
Brittle
-
-
3.14-3.16
Conchoidal
Perfect on {010} and {110}
5-5.5
MgF 2Ulrich Henn and Claudio C.

Londonite and Sellaite Chemical Formula

While comparing Londonite and Sellaite 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 Sellaite chemical formula.

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Londonite and Sellaite Specific Gravity

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