Poldervaartite and Sillimanite Physical Properties
Tenacity
Not Available
Tough
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.91
3.20-3.26
Fracture
Handbook of mineralogy (2001)
Splintery
Cleavage
None
{010} perfect
Mohs Hardness
Not Available
6-7.5
Chemical Composition
(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Poldervaartite and Sillimanite Chemical Formula
While comparing Poldervaartite 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 Poldervaartite and Sillimanite chemical formula.
- Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Poldervaartite and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Poldervaartite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poldervaartite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Poldervaartite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.