Calcite and Norbergite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.67-2.73
  
3.177
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Cleavage
Perfect on [10 1 1] three directions with angle of 74° 55
  
{???} Distinct
  
Mohs Hardness
3
  
6-6.5
  
Chemical Composition
CaCO 3Ulrich Henn and Claudio C.
  
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
  
Calcite and Norbergite Chemical Formula
While comparing Calcite and Norbergite 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 Norbergite chemical formula.
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
- Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Calcite and Norbergite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Calcite and Norbergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Norbergite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 3.177 whereas that of Norbergite is 3.177.