Sample | Mnz4_p1 | Mnz4_p2 | Mnz4_p3 | Mnz4_p4 | Mnz4_p5 | Mnz4_p6 | Mnz4_p7 | Mnz4_p8 | Mnz4_p9 | Mnz4_p10 | |
Comment | Rim | Intermediate | Core | Rim | |||||||
SiO2 (wt%) | 3.73 | 3.26 | 3.34 | 1.71 | 1.78 | 1.42 | 1.38 | 2.06 | 3.19 | 3.29 | |
FeO | 0.03 | 0.03 | 0.00 | 0.02 | 0.08 | 0.04 | 0.03 | 0.07 | 0.01 | 0.03 | |
MgO | 0.90 | 0.88 | 0.83 | 0.78 | 0.56 | 0.72 | 0.71 | 0.74 | 0.81 | 0.83 | |
CaO | 22.99 | 23.74 | 23.69 | 25.98 | 25.63 | 26.66 | 26.79 | 26.47 | 23.59 | 23.68 | |
P2O5 | 1.12 | 1.10 | 1.02 | 0.52 | 0.25 | 0.40 | 0.40 | 0.41 | 0.98 | 1.06 | |
PbO | 19.40 | 17.09 | 17.56 | 9.54 | 9.24 | 7.95 | 7.91 | 7.55 | 16.61 | 16.81 | |
ThO2 | 0.26 | 0.23 | 0.30 | 0.21 | 0.10 | 0.21 | 0.19 | 0.12 | 0.21 | 0.22 | |
UO2 | 0.90 | 0.84 | 0.87 | 1.05 | 0.60 | 1.06 | 1.11 | 1.05 | 0.81 | 0.86 | |
Y2O3 | 9.51 | 10.20 | 10.08 | 11.64 | 11.92 | 11.71 | 11.64 | 11.77 | 10.27 | 10.21 | |
La2O3 | 25.83 | 26.83 | 26.52 | 30.44 | 31.46 | 30.82 | 31.22 | 30.87 | 27.21 | 27.06 | |
Ce2O3 | 2.88 | 3.00 | 2.95 | 3.24 | 3.19 | 3.33 | 3.34 | 3.23 | 2.90 | 3.04 | |
Pr2O3 | 9.36 | 9.44 | 9.45 | 10.30 | 10.36 | 10.64 | 10.52 | 10.30 | 9.56 | 9.53 | |
Nd2O3 | 1.55 | 1.52 | 1.51 | 1.53 | 1.60 | 1.61 | 1.66 | 1.67 | 1.38 | 1.48 | |
Sm2O3 | 0.96 | 0.99 | 0.99 | 1.20 | 0.94 | 1.12 | 1.08 | 1.00 | 0.93 | 0.93 | |
Gd2O3 | 0.20 | 0.25 | 0.23 | 0.29 | 0.20 | 0.24 | 0.28 | 0.34 | 0.33 | 0.21 | |
Dy2O3 | 0.00 | 0.00 | 0.03 | 0.00 | 0.02 | 0.00 | 0.00 | 0.04 | 0.00 | 0.00 | |
Ho2O3 | 0.00 | 0.11 | 0.15 | 0.07 | 0.02 | 0.07 | 0.00 | 0.05 | 0.05 | 0.09 | |
Er2O3 | 0.00 | 0.00 | 0.00 | 0.01 | 0.02 | 0.00 | 0.03 | 0.01 | 0.01 | 0.00 | |
Yb2O3 | 0.00 | 0.02 | 0.00 | 0.02 | 0.02 | 0.02 | 0.01 | 0.01 | 0.00 | 0.03 | |
F | 0.52 | 0.54 | 0.52 | 0.59 | 0.63 | 0.64 | 0.65 | 0.56 | 0.57 | 0.52 | |
F = O | −0.22 | −0.23 | −0.22 | −0.25 | −0.26 | −0.27 | −0.27 | −0.23 | −0.24 | −0.22 | |
Cl | 0.02 | 0.02 | 0.03 | 0.04 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | |
Cl = O | 0.00 | 0.00 | −0.01 | −0.01 | −0.01 | −0.01 | −0.01 | −0.01 | −0.01 | −0.01 | |
Total | 99.93 | 99.86 | 99.84 | 98.94 | 98.38 | 98.41 | 98.70 | 98.11 | 99.20 | 99.69 | |
Structural formulae based on 16 oxygen atoms | |||||||||||
Si (apfu.) | 1.265 | 1.129 | 1.154 | 0.641 | 0.675 | 0.542 | 0.526 | 0.769 | 1.117 | 1.145 | |
Fe | 0.009 | 0.008 | 0.000 | 0.007 | 0.024 | 0.011 | 0.010 | 0.023 | 0.002 | 0.008 | |
Ca | 0.327 | 0.328 | 0.307 | 0.312 | 0.228 | 0.295 | 0.288 | 0.296 | 0.306 | 0.310 | |
P | 3.305 | 3.484 | 3.467 | 4.125 | 4.101 | 4.297 | 4.314 | 4.190 | 3.498 | 3.484 | |
Pb | 0.103 | 0.103 | 0.095 | 0.053 | 0.025 | 0.041 | 0.041 | 0.041 | 0.093 | 0.099 | |
Th | 1.499 | 1.348 | 1.382 | 0.815 | 0.795 | 0.689 | 0.684 | 0.643 | 1.324 | 1.330 | |
U | 0.020 | 0.018 | 0.023 | 0.018 | 0.008 | 0.017 | 0.016 | 0.010 | 0.017 | 0.017 | |
Y | 0.072 | 0.068 | 0.071 | 0.093 | 0.053 | 0.094 | 0.099 | 0.093 | 0.067 | 0.070 | |
La | 0.595 | 0.652 | 0.642 | 0.805 | 0.831 | 0.823 | 0.817 | 0.812 | 0.663 | 0.655 | |
Ce | 1.605 | 1.702 | 1.678 | 2.090 | 2.177 | 2.148 | 2.174 | 2.113 | 1.745 | 1.722 | |
Pr | 0.178 | 0.189 | 0.186 | 0.222 | 0.220 | 0.231 | 0.232 | 0.220 | 0.185 | 0.193 | |
Nd | 0.567 | 0.584 | 0.583 | 0.690 | 0.699 | 0.724 | 0.715 | 0.688 | 0.598 | 0.591 | |
Sm | 0.091 | 0.091 | 0.090 | 0.099 | 0.104 | 0.106 | 0.109 | 0.108 | 0.083 | 0.089 | |
Gd | 0.054 | 0.057 | 0.057 | 0.074 | 0.059 | 0.071 | 0.068 | 0.062 | 0.054 | 0.054 | |
Dy | 0.011 | 0.014 | 0.013 | 0.018 | 0.012 | 0.014 | 0.017 | 0.021 | 0.019 | 0.011 |