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Mineral speciesFormula
 BloediteNa2Mg(SO4)2:4H2O 
Mineralogy
Family: Miscellaneous salts 
Space group: Monoclinic - Prismatic HM symbol (2/m) Space Group: P 21/a 
Dana class: 29.3.3.1VI- 29 Hydrated Acid and Sulfates ; 29.3 Hydrated Acid and Sulfates where (A+)2 B (XO4)2 . x(H2O) ; 29.3.3 
Geological context
High temperature: a wide field of stability at 25C in the reciprocal salt system Na-Mg-Cl-SO4 
Geological context: In saline deposits 
Thermodynamics
Individual properties
Molar weight: 334.473 g/mol  ΔGºf-3,429,265 J/mol ref.   
   
Reaction properties
Chemical reaction:  Bloedite = Mg+2 + 2Na+ + 2SO4-2 + 4H2O 
log10(Keq) = A + B.T + C.T-1 + D.log10(T) + E.T−2 (with T expressed in Kelvin)
A B C D E
 -2.34593569e+0   0.00000000e+0   0.00000000e+0   0.00000000e+0   0.00000000e+0 
Van t'Hoff
@ 25°C, 1 bar: log 10(Keq)-2.35
T (ºC) : 0 25 60 100 150 200 250 300
log 10(Keq):  -2.35   -2.35   -2.35   -2.35   -2.35   -2.35   -2.35   -2.35 

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