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Londonite
Londonite

Polyhalite
Polyhalite



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Londonite
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Polyhalite

Londonite and Polyhalite 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
Soluble
-
2.78
Conchoidal
Perfect on {10 1 }; parting on {010}
3.5
K2Ca2Mg(SO4)4·2H2O

Londonite and Polyhalite Chemical Formula

While comparing Londonite and Polyhalite 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 Polyhalite chemical formula.

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Londonite and Polyhalite Specific Gravity

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