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