(Table S2) Representative analyses of Mn-cummingtonite, Mg-riebeckite, crossite and winchite of sample VT08129

Structural formulae have been calculated on the basis of 26 charges, excluding OH, F and Cl and with a fix Fe3+/Fetot of 0.200 for Mn-cummingtonite. Structural formulae of Mg-riebeckite, crossite and winchite have been calculated on the basis of sum cations = 13 + Na + K + Ca and assuming no Mg/Fe/Mn on M4.