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Table 1
Representative EPMA analytical spots for compositions of garnet (Grt), staurolite (St), biotite (Bt) and muscovite (Ms). Xalm: almandine; Xprp: pyrope; Xsps: spessartine; Xgrs: grossular.
| AR736 | AR14 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grtcore | Grtmantle | Ms | St1 | St2 | Grtcore | Grtmantle | Grtrim1 | Grtrim2 | Grtrim3 | Ms | Bt | |
| SiO2 | 38.81 | 38.66 | 46.04 | 29.13 | 28.99 | 38.22 | 38.20 | 38.48 | 38.08 | 37.37 | 46.56 | 34.26 |
| Al2O3 | 20.84 | 20.82 | 36.91 | 54.54 | 54.41 | 19.82 | 19.95 | 19.72 | 19.66 | 19.78 | 36.70 | 20.60 |
| FeO | 32.40 | 34.19 | 1.14 | 11.96 | 11.73 | 32.33 | 32.30 | 31.92 | 31.59 | 29.71 | 0.94 | 22.50 |
| MgO | 3.15 | 3.60 | 0.47 | 1.22 | 1.19 | 3.80 | 3.57 | 3.58 | 2.90 | 2.22 | 0.45 | 7.23 |
| MnO | 1.97 | 0.73 | 0.00 | 0.20 | 0.19 | 2.07 | 2.05 | 2.40 | 4.50 | 7.25 | 0.00 | 0.37 |
| CaO | 3.20 | 1.97 | 0.00 | – | – | 2.52 | 2.59 | 2.74 | 2.03 | 2.32 | 0.00 | 0.01 |
| TiO2 | 0.01 | 0.02 | 0.22 | 0.75 | 0.75 | 0.05 | 0.04 | 0.03 | 0.02 | 0.02 | 0.61 | 1.94 |
| Na2O | 0.02 | 0.01 | 0.23 | – | – | 0.02 | 0.02 | 0.00 | 0.03 | 0.01 | 0.48 | 0.08 |
| K2O | 0.02 | 0.02 | 9.94 | – | – | 0.01 | 0.01 | 0.00 | 0.01 | 0.02 | 11.13 | 7.93 |
| ZnO | – | – | – | 0.17 | 0.19 | – | – | – | – | – | – | – |
| Total | 100.41 | 100.02 | 94.94 | 97.97 | 97.46 | 98.84 | 98.73 | 98.88 | 98.81 | 98.69 | 96.87 | 94.93 |
| Si | 3.10 | 3.09 | 3.05 | 3.99 | 3.99 | 3.09 | 3.10 | 3.12 | 3.11 | 3.07 | 3.05 | 2.64 |
| Al | 1.96 | 1.96 | 2.89 | 8.80 | 8.83 | 1.89 | 1.91 | 1.88 | 1.89 | 1.91 | 2.83 | 1.87 |
| Fe | 2.16 | 2.29 | 0.06 | 1.37 | 1.35 | 2.19 | 2.19 | 2.16 | 2.16 | 2.04 | 0.05 | 1.45 |
| Mg | 0.37 | 0.43 | 0.05 | 0.25 | 0.21 | 0.46 | 0.43 | 0.43 | 0.35 | 0.27 | 0.04 | 0.83 |
| Mn | 0.13 | 0.05 | 0.00 | 0.02 | 0.03 | 0.14 | 0.14 | 0.16 | 0.31 | 0.50 | 0.00 | 0.02 |
| Ca | 0.27 | 0.17 | 0.00 | – | – | 0.22 | 0.23 | 0.24 | 0.18 | 0.20 | 0.00 | 0.00 |
| Ti | 0.00 | 0.00 | 0.01 | 0.08 | 0.08 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.11 |
| Na | 0.00 | 0.00 | 0.03 | – | – | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 0.01 |
| K | 0.00 | 0.00 | 0.84 | – | – | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.93 | 0.78 |
| Zn | – | – | – | 0.02 | 0.02 | – | – | – | – | – | – | – |
| XMg | 0.15 | 0.16 | 0.42 | 0.15 | 0.14 | 0.17 | 0.16 | 0.17 | 0.14 | 0.12 | 0.46 | 0.36 |
| Xalm | 0.73 | 0.78 | – | – | – | 0.73 | 0.73 | 0.72 | 0.72 | 0.68 | – | – |
| Xprp | 0.13 | 0.15 | – | – | – | 0.15 | 0.14 | 0.14 | 0.12 | 0.10 | – | – |
| Xgrs | 0.09 | 0.06 | – | – | – | 0.07 | 0.08 | 0.08 | 0.06 | 0.07 | – | – |
| Xsps | 0.05 | 0.02 | – | – | – | 0.05 | 0.05 | 0.05 | 0.10 | 0.15 | – | – |
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