Berthierine ISGS

Formula : (Si1.332Al0.668)(Al0.976Fe1.622Mg0.157)O5(OH)4

Space group: 
Monoclinic - Domatic HM symbol (m) Space Group: Cm
Dana class: 
71.1.2c.2VIII- 71 Phyllosilicate Minerals ; 71.1 Phyllosilicates Phyllosilicate Sheets of Six-Membered Rings with 1:1 layers ; 71.1.2c Serpentine group (Amesite subgroup)

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
324.194 101.160 -3461830 -3774460 257.000 263.37
Reaction properties

Berthierine ISGS + 8.672H+ ⇌ 1.644Al+3 + 1.44Fe+2 + 0.157Mg+2 + 1.332H4SiO4

298.15 K, 1 bar log10K: 27.92 ΔH°r: -300389 J·mol-1
T(°C) 0 25 60 100 150 200 250 300
log10K 33.02 27.92 22.07 16.77 11.52 7.27 3.60 0.22