Covellite and Ettringite Physical Properties
Tenacity
Flexible
Not Available
Solubility
Not Available
Partially soluble in water
Durability
Not Available
Not Available
Specific Gravity
4.6-4.76
1.77
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Not Available
Cleavage
Perfect on {0001}
Perfect on {10 1 0}
Mohs Hardness
Not Available
2-2.5
Chemical Composition
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Covellite and Ettringite Chemical Formula
While comparing Covellite 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 Covellite and Ettringite chemical formula.
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Covellite and Ettringite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Covellite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Covellite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Covellite is 1.77 whereas that of Ettringite is 1.77.