Blue John and Muscovite Physical Properties
Tenacity
Not Available
Elastic
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.00-3.25
2.78-2.88
Fracture
Not Available
Micaceous, Brittle
Cleavage
Not Available
Perfect on the {001}
Mohs Hardness
Not Available
2-3
Chemical Composition
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Blue John and Muscovite Chemical Formula
While comparing Blue John and Muscovite 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 Muscovite chemical formula.
- Chemical formula of Blue John- CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Muscovite- KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Blue John and Muscovite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Blue John and Muscovite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Muscovite Optical Properties during the identification of gemstone. Specific gravity of Blue John is 2.78-2.88 whereas that of Muscovite is 2.78-2.88.