Prehnite and Calcite Physical Properties
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
2.67-2.73
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Distinct on [001]
Perfect on [10 1 1] three directions with angle of 74° 55
Chemical Composition
Ca2Al2Si3O12(OH)
CaCO 3Ulrich Henn and Claudio C.
Prehnite and Calcite Chemical Formula
While comparing Prehnite and Calcite 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 Calcite chemical formula.
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Prehnite and Calcite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Prehnite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.