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Bytownite
Bytownite

Polyhalite
Polyhalite



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Bytownite
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Polyhalite

Bytownite and Polyhalite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.72-2.75
Uneven
Perfect on [001], good on [010], imperfect on [110]
6-6.5
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)
 
Brittle
Soluble
-
2.78
Conchoidal
Perfect on {10 1 }; parting on {010}
3.5
K2Ca2Mg(SO4)4·2H2O

Bytownite and Polyhalite Chemical Formula

While comparing Bytownite 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 Bytownite and Polyhalite chemical formula.

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Bytownite and Polyhalite Specific Gravity

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