Sillimanite and Orthoclase Physical Properties
Tenacity
Tough
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
2.54-2.61
Fracture
Splintery
Gems, Uneven
Cleavage
{010} perfect
Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sillimanite and Orthoclase Chemical Formula
While comparing Sillimanite and Orthoclase 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 Orthoclase chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Orthoclase- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sillimanite and Orthoclase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Orthoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Orthoclase Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2.54-2.61 whereas that of Orthoclase is 2.54-2.61.