Cordierite and Aragonite Physical Properties
Solubility
Not Available
Dilute acid
Durability
Not Available
Not Available
Specific Gravity
2.57-2.66
2.93-2.96
Fracture
Subconchoidal, Conchoidal, Brittle
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Fair on {100}, poor on {001} and {010}
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
7-7.5
3.5-4
Chemical Composition
Mg2Al4Si5O18
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Aragonite Chemical Formula
While comparing Cordierite and Aragonite 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 Cordierite and Aragonite chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Aragonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.