Sillimanite and Legrandite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
3.98-4.04
Fracture
Splintery
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
{010} perfect
Imperfect, poor one {100}
Mohs Hardness
6-7.5
4.5-5
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sillimanite and Legrandite Chemical Formula
While comparing Sillimanite and Legrandite 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 Legrandite chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sillimanite and Legrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.