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Mineral speciesFormula
 AplowiteCoSO4:H2O 
Mineralogy
Space group: Monoclinic - Prismatic HM symbol (2/m) Space Group: P 21/m 
Dana class: 29.6.6.4VI- 29 Hydrated Acid and Sulfates ; 29.6 Hydrated Acid and Sulfates where A XO4 .x(H2O) ; 29.6.6 Rozenite Group (Monoclinic) 
Geological context
Geological context: Water soluble patchy efflorescences on a specimen containing various sulphides in a barite-siderite matrix 
Thermodynamics
Individual properties
Molar weight: 173.012 g/mol  ΔGºf-1,042,723 J/mol ref.  Sº: 175.73 J/mol/K ref. 
  ΔHºf-1,200,720 J/mol ref.   
Reaction properties
Chemical reaction:  Aplowite = Co+2 + SO4-2 + H2O 
log10(Keq) = A + B.T + C.T-1 + D.log10(T) + E.T−2 (with T expressed in Kelvin)
A B C D E
 -1.71885114e+3   -2.64764078e-1   9.65967290e+4   6.20306338e+2   -5.52500412e+6 
Van t'Hoff
@ 25°C, 1 bar: log 10(Keq)-1.05
ΔH°r-52,050 J/mol ref.
T (ºC) : 0 25 60 100 150 200 250 300
log 10(Keq):  -0.27   -1.05   -2.06   -3.08   -4.23   -5.33   -6.49   -7.91 

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