Prehnite and Caledonite Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
5.6-5.76
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
Cleavage
Distinct on [001]
[001] perfect; [100] distinct
Mohs Hardness
6-6.5
2.5-3
Chemical Composition
Ca2Al2Si3O12(OH)
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Prehnite and Caledonite Chemical Formula
While comparing Prehnite and Caledonite 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 Caledonite chemical formula.
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
- Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Prehnite and Caledonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Prehnite and Caledonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Caledonite Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 5.6-5.76 whereas that of Caledonite is 5.6-5.76.