Table 2
Representative electron microprobe analyses of garnet, orthopyroxene, clinopyroxene, amphibole and phlogopite. na: not analyzed. The complete set of analyzes with end-member recalculations is provided in the Supplementary Material.
Sélection représentative d’analyses à la microsonde électronique du grenat, de l’orthopyroxène, du clinopyroxène, de l’amphibole et de la phlogopite. na : non analysé. Le jeu de données complet est disponible en matériel supplémentaire.
| Sample | JB-19-33 | JB-19-33 | JB-19-21 | JB-19-22 | JB-19-33 | JB-19-33 | JB-19-33 | JB-19-33 | JB-19-21 | JB-19-22 | JB-19-21 | JB-19-21 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mineral | Grt | Grt | Opx | Opx | Opx | Opx | Cpx | Cpx | Amp | Amp | Phl | Bt |
| LABEL | Grt-12 | Grt-01 | Opx-02 | Opx-04 | Opx-07 | Opx-08 | Cpx-11 | Cpx-06 | Amp-5 | Amp-1 | Phl-04 | Phl-11 |
| Position | core | rim | core | core | Matrix Core | Grt Corona | Grt Corona | Matrix Core | Corona | core | core | Corona |
| wt% oxides | ||||||||||||
| SiO2 | 41.32 | 41.45 | 57.57 | 56.02 | 55.71 | 55.01 | 52.99 | 53.49 | 55.29 | 44.74 | 41.27 | 38.32 |
| TiO2 | 0.63 | 0.61 | 0.06 | 0.03 | 0.09 | 0.07 | 0.34 | 0.31 | 0.03 | 0.39 | 1.15 | 2.02 |
| Al2O3 | 21.45 | 21.64 | 0.15 | 2.12 | 1.91 | 3.57 | 3.99 | 3.42 | 1.23 | 12.73 | 12.96 | 14.50 |
| Cr2O3 | 1.33 | 1.30 | 0.05 | 0.32 | 0.28 | 0.09 | 0.76 | 0.87 | 0.24 | 1.49 | 1.03 | 0.19 |
| FeO | 8.65 | 11.69 | 6.06 | 6.78 | 7.27 | 7.26 | 2.04 | 2.75 | 7.58 | 3.63 | 2.45 | 15.93 |
| MnO | 0.28 | 0.70 | 0.16 | 0.17 | 0.20 | 0.18 | 0.09 | 0.11 | 0.42 | 0.06 | 0.00 | 0.21 |
| MgO | 20.57 | 18.25 | 35.94 | 34.01 | 33.73 | 33.35 | 16.33 | 18.05 | 19.96 | 18.25 | 25.39 | 15.15 |
| CaO | 4.41 | 4.31 | 0.12 | 0.21 | 0.43 | 0.25 | 22.39 | 19.55 | 11.46 | 12.34 | 0.00 | 0.00 |
| Na2O | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 1.04 | 1.03 | 0.26 | 1.76 | 0.15 | 0.20 |
| K2O | na | na | na | na | na | na | na | na | 0.13 | 0.99 | 9.60 | 9.36 |
| P2O5 | na | na | na | na | na | na | na | na | na | na | na | na |
| NiO | na | na | na | na | na | na | na | na | na | na | na | na |
| ZnO | na | na | na | na | na | na | na | na | na | na | na | na |
| Total | 98.63 | 99.96 | 100.10 | 99.67 | 99.61 | 99.78 | 99.95 | 99.57 | 96.61 | 96.39 | 93.99 | 95.87 |
| Oxygen | 12 | 12 | 6 | 6 | 6 | 6 | 6 | 6 | 23 | 23 | 11 | 11 |
| Cation | ||||||||||||
| Si | 2.988 | 3.000 | 1.980 | 1.943 | 1.941 | 1.911 | 1.920 | 1.936 | 7.695 | 6.364 | 2.937 | 2.852 |
| Ti | 0.034 | 0.033 | 0.001 | 0.001 | 0.002 | 0.002 | 0.009 | 0.008 | 0.004 | 0.042 | 0.062 | 0.113 |
| Al | 1.828 | 1.845 | 0.006 | 0.087 | 0.078 | 0.146 | 0.170 | 0.146 | 0.201 | 2.133 | 1.087 | 1.272 |
| Cr | 0.076 | 0.074 | 0.001 | 0.009 | 0.008 | 0.002 | 0.022 | 0.025 | 0.027 | 0.168 | 0.058 | 0.011 |
| Fe2+ | 0.523 | 0.707 | 0.174 | 0.197 | 0.212 | 0.211 | 0.062 | 0.083 | 0.864 | 0.432 | 0.146 | 0.992 |
| Fe3+ | – | – | – | – | – | – | – | – | 0.018 | 0.000 | – | – |
| Mn | 0.017 | 0.043 | 0.005 | 0.005 | 0.006 | 0.005 | 0.003 | 0.003 | 0.050 | 0.007 | 0.000 | 0.014 |
| Mg | 2.217 | 1.969 | 1.843 | 1.759 | 1.752 | 1.727 | 0.882 | 0.974 | 4.142 | 3.869 | 2.694 | 1.681 |
| Ca | 0.342 | 0.334 | 0.005 | 0.008 | 0.016 | 0.009 | 0.869 | 0.758 | 1.709 | 1.880 | 0.000 | 0.000 |
| Na | 0.000 | 0.003 | 0.000 | 0.000 | 0.000 | 0.000 | 0.073 | 0.073 | 0.070 | 0.485 | 0.020 | 0.029 |
| K | – | – | – | – | – | – | – | – | 0.023 | 0.179 | 0.871 | 0.888 |
| Total cation | 8.03 | 8.01 | 4.01 | 4.01 | 4.01 | 4.01 | 4.01 | 4.01 | 16.80 | 17.56 | 7.87 | 7.85 |
| Mg# | 0.81 | 0.74 | 0.91 | 0.90 | 0.89 | 0.89 | 0.93 | 0.92 | 1.00 | 1.00 | 0.95 | 0.63 |
| Cr# | 2.83 | 2.85 | 0.20 | 0.09 | 0.09 | 0.02 | 0.11 | 0.15 | 0.12 | 0.07 | 0.05 | 0.01 |
| (Na + K)tot | – | – | – | – | – | – | – | – | 0.09 | 0.66 | – | – |
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