Berthierine(FeIII)

Formula : (Fe2.67Al0.33)(Si1.34Al0.66)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
361.484 103.270 -3150424 -3456240 285.000 292.78
Reaction properties

Berthierine(FeIII) + 8.64H+ ⇌ 0.99Al+3 + 2.34Fe+2 + 1.34H4SiO4 + 0.33Fe+3

298.15 K, 1 bar log10K: 29.28 ΔH°r: -269337 J·mol-1
T(°C) 0 25 60 100 150 200 250 300
log10K 34.12 29.28 23.74 18.73 13.79 9.80 6.36 3.18