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Mineral speciesFormula
 FCO3apatiteCa10(PO4)5(CO3)F3 
Mineralogy
Family: Apatite - Pyromorphite Group 
Space group: Monoclinic - Domatic HM symbol (m) Space Group: P 63/m 6/ 
Dana class: 41.8.1.0VII - 41 Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen ; 41.8 Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where(?)5 (XO4)3 Zq ; 41.8.1 
Geological context
High temperature: It is stable in a wide range of temperature. Its stability at room temperature is possible. 
Geological context: Apatite is the most abundant naturally occuring phosphate on Earth. Occurs in metamorphic rocks, sedimentary environments or precipitate from hydrothermal solutions 
Thermodynamics
Individual properties
Molar weight: 992.641 g/mol  ΔGºf-12,885,382 J/mol ref.   
   
Reaction properties
Chemical reaction:  FCO3apatite + 11H+ = HCO3- + 10Ca+2 + 3F- + 5H2PO4- 
log10(Keq) = A + B.T + C.T-1 + D.log10(T) + E.T−2 (with T expressed in Kelvin)
A B C D E
 -4.20712000e+1   0.00000000e+0   0.00000000e+0   0.00000000e+0   0.00000000e+0 
Van t'Hoff
@ 25°C, 1 bar: log 10(Keq)-42.07
T (ºC) : 0 25 60 100 150 200 250 300
log 10(Keq):  -42.07   -42.07   -42.07   -42.07   -42.07   -42.07   -42.07   -42.07 

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