Calcite and Antigorite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.67-2.73
  
2.58-2.80
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Conchoidal, Brittle, Metallic, Conchoidal, Handbook of mineralogy (2001)
  
Cleavage
Perfect on [10 1 1] three directions with angle of 74° 55
  
{001} Good
  
Mohs Hardness
3
  
5-5.5
  
Chemical Composition
CaCO 3Ulrich Henn and Claudio C.
  
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
  
Calcite and Antigorite Chemical Formula
While comparing Calcite and Antigorite 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 Antigorite chemical formula.
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
- Chemical formula of Antigorite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
Calcite and Antigorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Calcite and Antigorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Antigorite Optical Properties during the identification of gemstone. Specific gravity of Calcite is 2.58-2.80 whereas that of Antigorite is 2.58-2.80.