Topaz and Calcite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
2.67-2.73
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
[001] Perfect
Perfect on [10 1 1] three directions with angle of 74° 55
Chemical Composition
Al2SiO4(F,OH)2
CaCO 3Ulrich Henn and Claudio C.
Topaz and Calcite Chemical Formula
While comparing Topaz 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 Topaz and Calcite chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Topaz and Calcite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Calcite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.67-2.73 whereas that of Calcite is 2.67-2.73.