Sillimanite and Anthophyllite Physical Properties
Tenacity
Tough
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
2.9-3.5
Fracture
Splintery
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle
Cleavage
{010} perfect
{110} Perfect, {???} Distinct, {???} Distinct
Mohs Hardness
6-7.5
5.5-6
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Sillimanite and Anthophyllite Chemical Formula
While comparing Sillimanite and Anthophyllite 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 Anthophyllite chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Sillimanite and Anthophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Anthophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Anthophyllite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2.9-3.5 whereas that of Anthophyllite is 2.9-3.5.