Saponite(SapCa)

Formula : (Na0.394K0.021Ca0.038)(Si3.569Al0.397)(Mg2.949Fe0.055)O10(OH)2

Space group: 
Monoclinic - Prismatic HM symbol (2/m) Space Group: C 2/m
Dana class: 
71.3.1b.2VIII- 71 Phyllosilicate Minerals ; 71.3 Phyllosilicates Phyllosilicate Sheets of Six-Membered Rings with 2:1 clays ; 71.3.1b Smectite group (Trioctahedral Smectites)

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
391.107 141.660 -59622444 -59994060 314.550 347.29
Reaction properties

Saponite(SapCa) + 7.724H+ + 2.276H2O ⇌ 0.397Al+3 + 0.038Ca+2 + 0.034Fe+3

298.15 K, 1 bar log10K: -9428.93 ΔH°r: 53717862 J·mol-1
T(°C) 0 25 60 100 150 200 250 300
log10K -10290.20 -9428.93 -8440.25 -7537.34 -6648.72 -5947.96 -5381.32 -4913.85