Apatite and Sugilite Physical Properties
Specific Gravity
3.16-3.23
2.69-2.79
Fracture
Conchoidal, Uneven, Conchoidal to uneven
Conchoidal
Cleavage
[0001] indistinct, [1010] indistinct
Poor on {0001}
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Apatite and Sugilite Chemical Formula
While comparing Apatite and Sugilite 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 Sugilite 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 Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Apatite and Sugilite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apatite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.