Creedite and Purpurite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.70
3.2-3.4
Fracture
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
Perfect on {100}
[100] [001] perfect
Chemical Composition
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Creedite and Purpurite Chemical Formula
While comparing Creedite and Purpurite 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 Creedite and Purpurite chemical formula.
- Chemical formula of Creedite- Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.
- Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Creedite and Purpurite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Creedite and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Creedite and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Creedite is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.