Caledonite and Ettringite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Partially soluble in water
Durability
Not Available
Not Available
Specific Gravity
5.6-5.76
1.77
Fracture
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)
Not Available
Cleavage
[001] perfect; [100] distinct
Perfect on {10 1 0}
Mohs Hardness
2.5-3
2-2.5
Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Caledonite and Ettringite Chemical Formula
While comparing Caledonite and Ettringite 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 Ettringite 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 Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Caledonite and Ettringite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Caledonite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 1.77 whereas that of Ettringite is 1.77.