Periclase

Formula : MgO

Space group: 
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m
Dana class: 
4.2.1.1 (4) Simple Oxides (4.2) with a cation charge of 2+ (A++ O) (4.2.1) Periclase group (Isometric, Fm3m)
High temperature: 
High temperature mineral
Geological context: 
Contact metamorphism of dolomites and magnesites. Also present in blast furnace byproducts.

Dernière mise à jour le 11.06.2018

THERMODYNAMICS

Individual properties (298.15 K)
M
g·mol-1
cm3·mol-1
ΔGºf
J·mol-1
ΔHºf
J·mol-1
J·mol-1·k-1
CP
J·mol-1·K-1
40.304 11.250 -569312 -601600 26.950 37.24
Reaction properties

Periclase + 2H+ ⇌ Mg+2 + H2O

298.15 K, 1 bar log10K: 21.59 ΔH°r: -151230 J·mol-1
T(°C) 0 25 60 100 150 200 250 300
log10K 24.01 21.59 18.81 16.29 13.83 11.87 10.25 8.84