Sillimanite and Anorthoclase Physical Properties
Tenacity
Tough
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
2.56-2.62
Fracture
Splintery
Uneven, Uneven, Gems, Sixth Edition (2006)
Cleavage
{010} perfect
From the Greek for oblique and fracture, descriptive of the cleavage
Mohs Hardness
6-7.5
6-6.5
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
(Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Sillimanite and Anorthoclase Chemical Formula
While comparing Sillimanite and Anorthoclase 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 Anorthoclase chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Anorthoclase- (Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Sillimanite and Anorthoclase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Anorthoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Anorthoclase Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2.56-2.62 whereas that of Anorthoclase is 2.56-2.62.