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Blue John
Blue John

Hemimorphite
Hemimorphite



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Blue John
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Hemimorphite

Blue John and Hemimorphite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
 
Brittle
Soluble
-
3.30-3.50
Uneven, ConchoidalWalter Schumann, Conchoidal
Perfect on {110}, poor on {101}, {001} rare
5
Zn 4Si 2O 7(OH) 2H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Blue John and Hemimorphite Chemical Formula

While comparing Blue John and Hemimorphite 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 Blue John and Hemimorphite chemical formula.

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Blue John and Hemimorphite Specific Gravity

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