Cation Substitutions
(a) Temperature-sensitive
Edenite Exchange
AlIV + NaA + K ↔ Si + □
(b) Temperature-sensitive
Ti-Tschermak Exchange
AlIV + Ti ↔ Si + Mn
(c) Pressure-sensitive
Al-Tschermak Exchange
AlIV + AlVI ↔ Si + Fe + Mg
(d) Plagioclase-sensitive
Plagioclase crystallization
AlIV + Ca ↔ Si + Na
2.0
0.2
(a)
Ti (apfu)
NaA+K (apfu)
1.5
1.0
0.1
0.5
0.0
(b)
0.0
0.7
0.9
1.1
1.3
0.7
0.9
1.1
1.3
0.9
1.1
1.3
2.0
0.4
0.3
Ca (apfu)
AlVI (apfu)
1.5
0.2
1.0
0.1
(c)
(d)
0.5
0.0
0.7
0.9
1.1
0.7
1.3
IV
Al (apfu)
KPST01K_1-cores
KPST01K2_1-cores
KPST01K2_2-cores
KPST01K2_13-cores
KPST01K2_15-cores
KPST01K_1-edges
KPST01K2_1-edges
KPST01K2_2-edges
KPST01K2_13-edges
KPST01K2_15-edges
KPST01K_3-cores
KPST01K2_3-cores
KPST01K2_7-cores
KPST01K2_14 -cores
KPST01N2_1-cores
KPST01K_3-edges
KPST01K2_3-edges
KPST01K2_7-edges
KPST01K2_14-edges
KPST01N2_1-edges
Figure S 1.