Augite and Prehnite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.19-3.56
2.80-2.95
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Cleavage
{110} Perfect, {010} Indistinct
Distinct on [001]
Mohs Hardness
5.5-6
6-6.5
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Ca2Al2Si3O12(OH)
Augite and Prehnite Chemical Formula
While comparing Augite and Prehnite 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 Augite and Prehnite chemical formula.
- Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
Augite and Prehnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Augite and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augite and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Augite is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.