Willemite and Ettringite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Partially soluble in water
Durability
Not Available
Not Available
Specific Gravity
3.89-4.18
1.77
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven
Not Available
Cleavage
{0001}, {11 2 0} imperfect
Perfect on {10 1 0}
Chemical Composition
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Willemite and Ettringite Chemical Formula
While comparing Willemite 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 Willemite and Ettringite chemical formula.
- Chemical formula of Willemite- Zn 2SiO 4Michael 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)
Willemite and Ettringite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Willemite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Willemite is 1.77 whereas that of Ettringite is 1.77.