Caledonite and Aragonite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Dilute acid
  
Durability
Not Available
  
Not Available
  
Specific Gravity
5.6-5.76
  
2.93-2.96
  
Fracture
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
  
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Cleavage
[001] perfect; [100] distinct
  
Distinct on {010}, imperfect {110} and {011}
  
Mohs Hardness
2.5-3
  
3.5-4
  
Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
  
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Caledonite and Aragonite Chemical Formula
While comparing Caledonite and Aragonite 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 Caledonite and Aragonite chemical formula.
- Chemical formula of Caledonite- Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Caledonite and Aragonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Caledonite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.