Apatite and Cinnabar Physical Properties
Tenacity
-
Slightly sectile
Solubility
-
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Specific Gravity
3.16-3.23
2
Fracture
Conchoidal, Uneven, Conchoidal to uneven
Uneven
Cleavage
[0001] indistinct, [1010] indistinct
Prismatic {10 1 0}, perfect
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Apatite and Cinnabar Chemical Formula
While comparing Apatite and Cinnabar 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 Cinnabar 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 Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Apatite and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apatite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Apatite is 2 whereas that of Cinnabar is 2.