Apatite and Iolite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.16-3.23
2.6-2.7
Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
Not Available
Cleavage
[0001] indistinct, [1010] indistinct
3,1
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Mg2Al4Si5O18
Apatite and Iolite Chemical Formula
While comparing Apatite and Iolite 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 Iolite 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 Iolite- Mg2Al4Si5O18
Apatite and Iolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apatite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.