Apatite and Spinel Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
none
Durability
Not Available
Not Available
Specific Gravity
3.16-3.23
3.64-3.66
Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
[0001] indistinct, [1010] indistinct
None, but may exhibit slight parting
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
MgAl2O4
Apatite and Spinel Chemical Formula
While comparing Apatite 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 Apatite and Spinel chemical formula.
- Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Spinel- MgAl2O4
Apatite and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apatite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Apatite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.