Calcite and Poudretteite Physical Properties
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.67-2.73
2.51-2.53
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, Splintery
Cleavage
Perfect on [10 1 1] three directions with angle of 74° 55
None
Chemical Composition
CaCO 3Ulrich Henn and Claudio C.
KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Calcite and Poudretteite Chemical Formula
While comparing Calcite and Poudretteite 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 Calcite and Poudretteite chemical formula.
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
- Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Calcite and Poudretteite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Calcite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.