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Charoite
Charoite

Polyhalite
Polyhalite



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Charoite
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Polyhalite

Charoite and Polyhalite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.54-2.782.78
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Brittle
1.6 Cleavage
Good in three directions
Perfect on {10 1 }; parting on {010}
1.7 Mohs Hardness
5-63.5
Amber
2 10
1.8 Chemical Composition
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Not Available

Charoite and Polyhalite Chemical Formula

While comparing Charoite 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 Charoite and Polyhalite chemical formula.

  • Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
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Charoite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charoite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charoite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Charoite is 2.78 whereas that of Polyhalite is 2.78.