Londonite and Charlesite Physical Properties

Londonite

Charlesite

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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

1.79

Irregular/uneven

Perfect on {10bar10}

2.5

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

Londonite and Charlesite Chemical Formula

While comparing Londonite and Charlesite 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 Charlesite chemical formula.

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Londonite and Charlesite Specific Gravity

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