Nepheline and Calcite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.55-2.65
2.67-2.73
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
[1010] Poor
Perfect on [10 1 1] three directions with angle of 74° 55
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
CaCO 3Ulrich Henn and Claudio C.
Nepheline and Calcite Chemical Formula
While comparing Nepheline 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 Nepheline and Calcite chemical formula.
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Nepheline and Calcite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nepheline and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Calcite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 2.67-2.73 whereas that of Calcite is 2.67-2.73.