Dolomite and Sillimanite Physical Properties
Solubility
Poorly soluble in dilute HCl
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
3.20-3.26
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Splintery
Cleavage
Perfect on {10 1 1}, rhombohedral cleavage
{010} perfect
Mohs Hardness
3.5-4
6-7.5
Chemical Composition
CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Dolomite and Sillimanite Chemical Formula
While comparing Dolomite 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 Dolomite and Sillimanite chemical formula.
- Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Dolomite and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dolomite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dolomite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Dolomite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.