Willemite and Cordierite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.89-4.18
2.57-2.66
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven
Subconchoidal, Conchoidal, Brittle
Cleavage
{0001}, {11 2 0} imperfect
Fair on {100}, poor on {001} and {010}
Chemical Composition
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg2Al4Si5O18
Willemite and Cordierite Chemical Formula
While comparing Willemite and Cordierite 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 Willemite and Cordierite chemical formula.
- Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Cordierite- Mg2Al4Si5O18
Willemite and Cordierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Willemite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Willemite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.