Zincite and Blue John Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.50-5.90
3.00-3.25
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Not Available
Cleavage
On {10 1 0}, perfect; parting on {000 1 }
Not Available
Mohs Hardness
4
Not Available
Chemical Composition
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Zincite and Blue John Chemical Formula
While comparing Zincite and Blue John 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 Zincite and Blue John chemical formula.
- Chemical formula of Zincite- (Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Blue John- CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Zincite and Blue John Specific Gravity
Another important criteria for qualitative analysis of gemstones is Zincite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zincite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Zincite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.