Prehnite and Lapis lazuli Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
2.50-3.00
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Distinct on [001]
3,6
Chemical Composition
Ca2Al2Si3O12(OH)
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Prehnite and Lapis lazuli Chemical Formula
While comparing Prehnite and Lapis lazuli 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 Lapis lazuli chemical formula.
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
- Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Prehnite and Lapis lazuli Specific Gravity
Another important criteria for qualitative analysis of gemstones is Prehnite and Lapis lazuli Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Lapis lazuli Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 2.50-3.00 whereas that of Lapis lazuli is 2.50-3.00.