Hemimorphite and Sillimanite Physical Properties
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.30-3.50
3.20-3.26
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Splintery
Cleavage
Perfect on {110}, poor on {101}, {001} rare
{010} perfect
Chemical Composition
Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Hemimorphite and Sillimanite Chemical Formula
While comparing Hemimorphite 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 Hemimorphite and Sillimanite chemical formula.
- Chemical formula of Hemimorphite- Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Hemimorphite and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hemimorphite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hemimorphite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Hemimorphite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.