Prehnite and Dumortierite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
3.26-3.41
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
Distinct on [001]
Distinct on {100}, poor on {110}; parting on {001}
Mohs Hardness
6-6.5
7-8.5
Chemical Composition
Ca2Al2Si3O12(OH)
AlAl6O3BSi3O18
Prehnite and Dumortierite Chemical Formula
While comparing Prehnite and Dumortierite 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 Prehnite and Dumortierite chemical formula.
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
- Chemical formula of Dumortierite- AlAl6O3BSi3O18
Prehnite and Dumortierite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Prehnite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.