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