Table 1 Stoichiometric mineral compositions for CA13-01, based on assumed number of oxygen atoms shown.

Stoichiometric mineral compositions for CA13-01, based on assumed number of oxygen atoms shown.. Note that Fe in zoisite was assumed to be 100% Fe3+ and Fe in all other minerals was assumed to be 100% Fe2+. Gln, glaucophane; Omph, omphacite; Phe, phengite; Zo, zoisite.

CA13-01
GlnOmphPheZo 1Zo 2
Si7.992.023.492.912.92
Ti0.010.01
Al1.690.361.972.412.25
Cr
Fe1.150.220.190.500.62
Mn0.01
Mg2.210.440.390.01
Ca0.150.511.791.72
Na1.870.460.03
K0.87
O2361112.512.5
Al/(Al + Si)0.170.150.360.450.44
Fe/(Fe + Al)0.410.380.090.170.21
Fe/(Fe + Mg)0.340.340.33
Na/(Na + Ca)0.930.48
Na/(Na + K)0.04
Total oxides (wt %)97.5100.694.596.397.6