Verdelite and Londonite Physical Properties

Verdelite

Londonite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

2.90-3.40

Conchoidal

Indiscernible

7-7.5

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

3.34

Conchoidal

None

-9999

(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)

Verdelite and Londonite Chemical Formula

While comparing Verdelite 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 Verdelite and Londonite chemical formula.

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Verdelite and Londonite Specific Gravity

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