Sillimanite and Calcite Physical Properties
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
2.67-2.73
Fracture
Splintery
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
{010} perfect
Perfect on [10 1 1] three directions with angle of 74° 55
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
CaCO 3Ulrich Henn and Claudio C.
Sillimanite and Calcite Chemical Formula
While comparing Sillimanite and Calcite 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 Calcite chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Sillimanite and Calcite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.