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Londonite
Londonite
☒

Alunite
Alunite
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Londonite
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Alunite

Londonite and Alunite Physical Properties

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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
Soluble
-
2.6-2.9
Conchoidal, Uneven
On {0001}, perfect
3.5-4
KAl3(SO4)2(OH)6

Londonite and Alunite Chemical Formula

While comparing Londonite and Alunite 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 Alunite chemical formula.

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Londonite and Alunite Specific Gravity

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