Scolecite and Calcite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Soluble
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.20-2.23
  
2.67-2.73
  
Fracture
Irregular/uneven, UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Uneven
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Cleavage
Perfect on {110} and {1 1 0}
  
Perfect on [10 1 1] three directions with angle of 74° 55
  
Mohs Hardness
5-5.5
  
3
  
Chemical Composition
CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.
  
CaCO 3Ulrich Henn and Claudio C.
  
Scolecite and Calcite Chemical Formula
While comparing Scolecite 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 Scolecite and Calcite chemical formula.
- Chemical formula of Scolecite- CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Scolecite and Calcite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Scolecite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Scolecite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Scolecite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.