Cordierite and Legrandite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.57-2.66
3.98-4.04
Fracture
Subconchoidal, Conchoidal, Brittle
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
Fair on {100}, poor on {001} and {010}
Imperfect, poor one {100}
Mohs Hardness
7-7.5
4.5-5
Chemical Composition
Mg2Al4Si5O18
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Legrandite Chemical Formula
While comparing Cordierite 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 Cordierite and Legrandite chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Legrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.