Prehnite and Chrome-Chalcedony Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
2.55-2.70
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Not Available
Cleavage
Distinct on [001]
Not Available
Mohs Hardness
6-6.5
6.5-7
Chemical Composition
Ca2Al2Si3O12(OH)
SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
Prehnite and Chrome-Chalcedony Chemical Formula
While comparing Prehnite and Chrome-Chalcedony 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 Chrome-Chalcedony chemical formula.
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
- Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
Prehnite and Chrome-Chalcedony Specific Gravity
Another important criteria for qualitative analysis of gemstones is Prehnite and Chrome-Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Chrome-Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 2.55-2.70 whereas that of Chrome-Chalcedony is 2.55-2.70.