Sillimanite and Muscovite Physical Properties
Tenacity
Tough
  
Elastic
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.20-3.26
  
2.78-2.88
  
Fracture
Splintery
  
Micaceous, Brittle
  
Cleavage
{010} perfect
  
Perfect on the {001}
  
Mohs Hardness
6-7.5
  
2-3
  
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
  
KAl 2AlSi 3O 10(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
  
Sillimanite and Muscovite Chemical Formula
While comparing Sillimanite 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 Sillimanite and Muscovite chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael 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
Sillimanite and Muscovite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Muscovite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Muscovite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2.78-2.88 whereas that of Muscovite is 2.78-2.88.