Montebrasite and Blue John Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.98-3.10
3.00-3.25
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Not Available
Cleavage
{100} Perfect, {110} Good, {011} Distinct
Not Available
Mohs Hardness
5.5-6
Not Available
Chemical Composition
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Montebrasite and Blue John Chemical Formula
While comparing Montebrasite 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 Montebrasite and Blue John chemical formula.
- Chemical formula of Montebrasite- LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Blue John- CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Montebrasite and Blue John Specific Gravity
Another important criteria for qualitative analysis of gemstones is Montebrasite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Montebrasite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Montebrasite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.