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Apatite
Apatite

Cinnabar
Cinnabar



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Apatite
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Cinnabar

Apatite and Cinnabar Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Slightly sectile
1.2 Solubility
Not Available
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.16-3.232
Amber
1 7.18
1.5 Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
Uneven, Uneven, Gemstones (2009), Brittle
1.6 Cleavage
[0001] indistinct, [1010] indistinct
Prismatic {10 1 0}, perfect
1.7 Mohs Hardness
52-2.5
Amber
2 10
1.8 Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
HgSMichael O’Donoghue , 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 O’Donoghue , 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.