Blue John and Cobaltite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.00-3.25
6.3
Fracture
Not Available
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
Cleavage
Not Available
{100} Good, {010} Good, {001} Good
Mohs Hardness
Not Available
5.5
Chemical Composition
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
CoAsSAnthony et al , Handbook of mineralogy (2001)
Blue John and Cobaltite Chemical Formula
While comparing Blue John and Cobaltite 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 Cobaltite chemical formula.
- Chemical formula of Blue John- CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
Blue John and Cobaltite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Blue John and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Blue John is 6.3 whereas that of Cobaltite is 6.3.