Willemite and Spinel Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
none
Durability
Not Available
Not Available
Specific Gravity
3.89-4.18
3.64-3.66
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{0001}, {11 2 0} imperfect
None, but may exhibit slight parting
Chemical Composition
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
MgAl2O4
Willemite and Spinel Chemical Formula
While comparing Willemite and Spinel 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 Spinel chemical formula.
- Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Spinel- MgAl2O4
Willemite and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Willemite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Willemite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.