Spinel and Adamite Physical Properties
Tenacity
Not Available
Brittle
Solubility
none
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.64-3.66
4.32-4.48
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic
Cleavage
None, but may exhibit slight parting
{101}, good; {010}, poor
Chemical Composition
MgAl2O4
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Spinel and Adamite Chemical Formula
While comparing Spinel and Adamite 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 Spinel and Adamite chemical formula.
- Chemical formula of Spinel- MgAl2O4
- Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Spinel and Adamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Spinel and Adamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Adamite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 4.32-4.48 whereas that of Adamite is 4.32-4.48.