Rocks | n | N | P2O5, % | P, % | PTiM | PCaM | PFeM | PFe(t)M |
Hyperbasites | 13 | 32 | 0.140 ± 0.065 | 0.062 ± 0.029 | 0.093 ± 0.027 | 0.028 ± 0.020 | 0.042 ± 0.023 | 0.012 ± 0.009 |
Basites | 72 | 291 | 0.170 ± 0.026 | 0.075 ± 0.012 | 0.143 ± 0.024 | 0.032 ± 0.012 | 0.033 ± 0.010 | 0.018 ± 0.003 |
Mesites | 81 | 348 | 0.160 ± 0.021 | 0.070 ± 0.009 | 0.222 ± 0.029 | 0.059 ± 0.012 | 0.056 ± 0.008 | 0.026 ± 0.004 |
Acidites | 58 | 259 | 0.100 ± 0.016 | 0.044 ± 0.007 | 0.218 ± 0.038 | 0.083 ± 0.023 | 0.060 ± 0.012 | 0.027 ± 0.006 |
All tuffoids | 224 | 930 | 0.150 ± 0.014 | 0.066 ± 0.006 | 0.197 ± 0.020 | 0.052 ± 0.009 | 0.049 ± 0.005 | 0.023 ± 0.002 |