Spinel and Mellite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
none
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.64-3.66
  
1.58-1.60
  
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Cleavage
None, but may exhibit slight parting
  
{011} Imperfect
  
Mohs Hardness
8
  
2
  
Chemical Composition
MgAl2O4
  
Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
  
Spinel and Mellite Chemical Formula
While comparing Spinel and Mellite 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 Mellite chemical formula.
- Chemical formula of Spinel- MgAl2O4
- Chemical formula of Mellite- Al 2(Cl 2O 12) · 18H 2OUlrich Henn and Claudio C.
Spinel and Mellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Spinel and Mellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Mellite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 1.58-1.60 whereas that of Mellite is 1.58-1.60.