Brucite

Formula : Mg(OH)2

Family: 
Space group: 
Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: P 3m1
Dana class: 
6.2.1.1 (6) Hydroxides and Oxides Containing Hydroxyl (6.2) where X++ (OH)2 (6.2.1)Brucite group (Rhombohedral: P3m1)
High temperature: 
Occurs in metamorphic environment: low to high temperature.
Geological context: 
It occurs in serpentine, in chlorite or dolomitic schists, or in crystalline limestones as an alteration product of periclase.

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
58.320 24.630 -831992 -924142 59.428 77.27
Reaction properties

Brucite + 2H+ ⇌ Mg+2 + 2H2O

298.15 K, 1 bar log10K: 17.11 ΔH°r: -114518 J·mol-1
T(°C) 0 25 60 100 150 200 250 300
log10K 18.96 17.11 15.02 13.15 11.34 9.92 8.75 7.71