Londonite and Cryolite Physical Properties

Londonite

Cryolite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.342.97

1 7.18

1.5 Fracture

ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Uneven

1.6 Cleavage

None

None observed

1.7 Mohs Hardness

Not Available2.5

2 10

1.8 Chemical Composition

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

Na 3AlF 6Ulrich Henn and Claudio C.

Londonite and Cryolite Chemical Formula

While comparing Londonite and Cryolite 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 Cryolite chemical formula.

Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Cryolite- Na 3AlF 6Ulrich Henn and Claudio C.

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Londonite and Cryolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Londonite and Cryolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Londonite and Cryolite Optical Properties during the identification of gemstone. Specific gravity of Londonite is 2.97 whereas that of Cryolite is 2.97.