Cordierite and Rhodizite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.57-2.66
3.34-3.44
Fracture
Subconchoidal, Conchoidal, Brittle
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Fair on {100}, poor on {001} and {010}
{111} Indistinct, {111} Indistinct, {111} Indistinct
Mohs Hardness
7-7.5
8-8.5
Chemical Composition
Mg2Al4Si5O18
(K,Cs)Al 4Be 4(B,Be) 12O 28Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Rhodizite Chemical Formula
While comparing Cordierite and Rhodizite 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 Rhodizite chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Rhodizite- (K,Cs)Al 4Be 4(B,Be) 12O 28Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Rhodizite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Rhodizite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Rhodizite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.34-3.44 whereas that of Rhodizite is 3.34-3.44.