Purpurite and Chrome-Chalcedony Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.2-3.4
2.55-2.70
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Not Available
Cleavage
[100] [001] perfect
Not Available
Mohs Hardness
4-4.5
6.5-7
Chemical Composition
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
Purpurite and Chrome-Chalcedony Chemical Formula
While comparing Purpurite 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 Purpurite and Chrome-Chalcedony chemical formula.
- Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
Purpurite and Chrome-Chalcedony Specific Gravity
Another important criteria for qualitative analysis of gemstones is Purpurite and Chrome-Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Chrome-Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Purpurite is 2.55-2.70 whereas that of Chrome-Chalcedony is 2.55-2.70.