Manganosite

Formula : MnO

Family: 
Oxides
Space group: 
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m
Dana class: 
4.2.1.3 (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: 
Metamorphosed manganese deposits.

Dernière mise à jour le 25.01.2021

THERMODYNAMICS

Individual properties (298.15 K)
M
g·mol-1
 V°
cm3·mol-1
 ΔGºf
J·mol-1
 ΔHºf
J·mol-1
 Sº
J·mol-1·k-1
 CP
J·mol-1·K-1
70.937 13.221 (Ref.: 78hel/del,82wag/eva) -362899 (Ref.: 78hel/del,82wag/eva) -385225 (Ref.: Internal calculation) 59.706 (Ref.: 78hel/del,82wag/eva) 44.76 (Ref.: 78hel/del,82wag/eva)
CP(T) = a + b·T + ·c·T-2 (T in Kelvin)
a
J·mol-1·K-1
 b * 103
J·mol-1·K-2
 c * 10-5
J·K·mol-1
 Maier Kelley Ref.
46.48 8.12 -3.68 (Ref.: 78hel/del,82wag/eva)
Reaction properties

Manganosite + 2H+ ⇌ Mn+2 + H2O

298.15 K, 1 bar log10K: 18.36 ΔH°r:-121934 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K 20.32 18.36 16.12 14.09 12.09 10.50 9.17 8.00
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-327.663362 -0.050569 23347.900525 118.440947 -914319.589630