Sillimanite and Axinite Physical Properties
Tenacity
Tough
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
3.26-3.36
Fracture
Splintery
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{010} perfect
Good on {100}
Mohs Hardness
6-7.5
6.5-7
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Sillimanite and Axinite Chemical Formula
While comparing Sillimanite and Axinite 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 Axinite chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Axinite- (Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Sillimanite and Axinite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Axinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Axinite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 3.26-3.36 whereas that of Axinite is 3.26-3.36.