Diaspore and Cordierite Physical Properties
Tenacity
Very brittle
Brittle
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.30-3.40
2.57-2.66
Fracture
Conchoidal, Brittle, Conchoidal
Subconchoidal, Conchoidal, Brittle
Cleavage
{010} perfect, {110} distinct, {100} in traces
Fair on {100}, poor on {001} and {010}
Mohs Hardness
6.5-7
7-7.5
Chemical Composition
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Mg2Al4Si5O18
Diaspore and Cordierite Chemical Formula
While comparing Diaspore 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 Diaspore and Cordierite chemical formula.
- Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Cordierite- Mg2Al4Si5O18
Diaspore and Cordierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Diaspore and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diaspore and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Diaspore is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.