Colemanite and Cordierite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.40-2.42
2.57-2.66
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Subconchoidal, Conchoidal, Brittle
Cleavage
{010} Perfect, {001} Distinct
Fair on {100}, poor on {001} and {010}
Chemical Composition
Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg2Al4Si5O18
Colemanite and Cordierite Chemical Formula
While comparing Colemanite 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 Colemanite and Cordierite chemical formula.
- Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Cordierite- Mg2Al4Si5O18
Colemanite and Cordierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Colemanite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Colemanite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Colemanite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.