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