Cordierite and Sphalerite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.57-2.66
3.95-4.10
Fracture
Subconchoidal, Conchoidal, Brittle
UnevenWalter Schumann, Gemstones of the world (2001) More from other references, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Uneven
Cleavage
Fair on {100}, poor on {001} and {010}
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
7-7.5
3.5-4
Chemical Composition
Mg2Al4Si5O18
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Sphalerite Chemical Formula
While comparing Cordierite and Sphalerite 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 Sphalerite chemical formula.
- Chemical formula of Cordierite- Mg2Al4Si5O18
- Chemical formula of Sphalerite- (Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cordierite and Sphalerite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cordierite and Sphalerite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cordierite and Sphalerite Optical Properties during the identification of gemstone. Specific gravity of Cordierite is 3.95-4.10 whereas that of Sphalerite is 3.95-4.10.