Prehnite and Aragonite Physical Properties
Solubility
Not Available
Dilute acid
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
2.93-2.96
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Distinct on [001]
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
6-6.5
3.5-4
Chemical Composition
Ca2Al2Si3O12(OH)
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Prehnite and Aragonite Chemical Formula
While comparing Prehnite and Aragonite 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 Aragonite chemical formula.
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Prehnite and Aragonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Prehnite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.