Home > Data consultation > Mineral species
 
Mineral speciesFormula
 Al(element)Al 
Mineralogy
Family: Metal 
Space group: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m,P m3m 
Dana class: 1.1.1.5 (1)Native Elements(1.1) with metallic elements other than the platinum group (1.1.1) Gold group 
Geological context
High temperature: Minor phase in low oxygen fugacity environments. In volcanic environment. Aluminum is present in some solid waste from incineration. Aluminun is a strong oxydizer. 
Geological context: No data are avalaible for the natural environment. Produced from chemical extraction of bauxite (Al2O3). 
Thermodynamics
Individual properties
Molar weight: 26.982 g/mol  ΔGºf0 J/mol ref.  Sº: 28.30 J/mol/K ref. 
  ΔHºf0 J/mol ref.  Cp: 24.20 J/mol/K ref. 
Reaction properties
Chemical reaction:  Al(element) + 0.75O2 + 3H+ = Al+3 + 1.5H2O 
log10(Keq) = A + B.T + C.T-1 + D.log10(T) + E.T−2 (with T expressed in Kelvin)
A B C D E
 -6.27302006e+2   -1.02583309e-1   8.36556050e+4   2.22507640e+2   -2.07578098e+6 
Van t'Hoff
@ 25°C, 1 bar: log 10(Keq)149.92
ΔH°r-958,045 J/mol ref.
T (ºC) : 0 25 60 100 150 200 250 300
log 10(Keq):  165.24   149.92   132.23   115.96   99.81   86.90   76.27   67.28 
Maier Kelley
Cp(T) = a + b*10-3T + C*105T-2 (with T expressed in Kelvin)  ref.
a:22.59 J/mol/K 
b:9.61 J/mol/K2 
c:-1.11 J.K/mol 

Home | Legal information | Private area | Contact us | RSS 2.0 BRGM − 3, avenue Claude Guillemin − 45060 Orléans Cedex 2