Spinel and Simpsonite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
none
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.64-3.66
  
Not Available
  
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
  
Cleavage
None, but may exhibit slight parting
  
None
  
Mohs Hardness
8
  
7-7.5
  
Chemical Composition
MgAl2O4
  
Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.
  
Spinel and Simpsonite Chemical Formula
While comparing Spinel and Simpsonite 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 Simpsonite chemical formula.
- Chemical formula of Spinel- MgAl2O4
- Chemical formula of Simpsonite- Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.
Spinel and Simpsonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Spinel and Simpsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Simpsonite Optical Properties during the identification of gemstone. Specific gravity of Spinel is Not Available whereas that of Simpsonite is Not Available.