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 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
324.194 101.160 (Ref.: 14bla/gai) Blanc, P., Gailhanou, H., Rogez, J., Mikaelian, G., Kawaji, H., Warmont, F., Grangeon, S., Greneche, J.M., Fialips, C.I., Giffaut, E., Gaucher, E.C., Claret, F., 2014, Thermodynamic properties of a chlorite and a berthierine by calorimetric methods: Physics and Chemistry of Minerals (accdepted) -3456320 (Ref.: Internal calculation) -3768950 (Ref.: 14bla/gai) Blanc, P., Gailhanou, H., Rogez, J., Mikaelian, G., Kawaji, H., Warmont, F., Grangeon, S., Greneche, J.M., Fialips, C.I., Giffaut, E., Gaucher, E.C., Claret, F., 2014, Thermodynamic properties of a chlorite and a berthierine by calorimetric methods: Physics and Chemistry of Minerals (accdepted) 257.000 (Ref.: 14bla/gai) Blanc, P., Gailhanou, H., Rogez, J., Mikaelian, G., Kawaji, H., Warmont, F., Grangeon, S., Greneche, J.M., Fialips, C.I., Giffaut, E., Gaucher, E.C., Claret, F., 2014, Thermodynamic properties of a chlorite and a berthierine by calorimetric methods: Physics and Chemistry of Minerals (accdepted) 263.37 (Ref.: 14bla/gai) Blanc, P., Gailhanou, H., Rogez, J., Mikaelian, G., Kawaji, H., Warmont, F., Grangeon, S., Greneche, J.M., Fialips, C.I., Giffaut, E., Gaucher, E.C., Claret, F., 2014, Thermodynamic properties of a chlorite and a berthierine by calorimetric methods: Physics and Chemistry of Minerals (accdepted)
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.
263.37 0.00 0.00 (Ref.: 14bla/gai) Blanc, P., Gailhanou, H., Rogez, J., Mikaelian, G., Kawaji, H., Warmont, F., Grangeon, S., Greneche, J.M., Fialips, C.I., Giffaut, E., Gaucher, E.C., Claret, F., 2014, Thermodynamic properties of a chlorite and a berthierine by calorimetric methods: Physics and Chemistry of Minerals (accdepted)
Reaction properties

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

298.15 K, 1 bar log10K: 28.89 ΔH°r:-320787 J·mol-1 (Ref.: 14bla/gai) Blanc, P., Gailhanou, H., Rogez, J., Mikaelian, G., Kawaji, H., Warmont, F., Grangeon, S., Greneche, J.M., Fialips, C.I., Giffaut, E., Gaucher, E.C., Claret, F., 2014, Thermodynamic properties of a chlorite and a berthierine by calorimetric methods: Physics and Chemistry of Minerals (accdepted)
T(°C) 0 25 60 100 150 200 250 300
log10K 33.98 28.89 22.96 17.53 12.16 7.80 4.06 0.61
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-1937.750586 -0.282705 122902.549554 690.635158 -6241976.006347