Colemanite and Datolite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.40-2.42
  
2.90-3.00
  
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
  
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
  
Cleavage
{010} Perfect, {001} Distinct
  
None
  
Mohs Hardness
4.5
  
5-5.5
  
Chemical Composition
Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Colemanite and Datolite Chemical Formula
While comparing Colemanite and Datolite 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 Datolite chemical formula.
- Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Datolite- CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Colemanite and Datolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Colemanite and Datolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Colemanite and Datolite Optical Properties during the identification of gemstone. Specific gravity of Colemanite is 2.90-3.00 whereas that of Datolite is 2.90-3.00.