Sillimanite and Scapolite Physical Properties
Tenacity
Tough
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
2.58-2.74
Fracture
Splintery
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Splintery
Cleavage
{010} perfect
{100} Distinct, {110} Distinct
Mohs Hardness
6-7.5
5.5-6
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references
Sillimanite and Scapolite Chemical Formula
While comparing Sillimanite and Scapolite 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 Scapolite chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Scapolite- Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references
Sillimanite and Scapolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Scapolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Scapolite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2.58-2.74 whereas that of Scapolite is 2.58-2.74.