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| n˚ éch | K03-B2 | |||||||||
| n˚ anal | 54 | 55 | 56 | 58 | 59 | 60 | 65 | 68 | 69 | 70 |
| SiO2 | 0.07 | 0.05 | 0.03 | 0.02 | 0.03 | 0.05 | 0.02 | 0.02 | 0.06 | 0.01 |
| TiO2 | 0.02 | 0.01 | 0.00 | 0.00 | 0.02 | 0.02 | 0.00 | 0.01 | 0.02 | 0.15 |
| Al2O3 | 33.40 | 34.12 | 33.63 | 33.94 | 33.92 | 33.71 | 40.89 | 39.62 | 40.39 | 40.18 |
| Cr2O3 | 36.72 | 36.15 | 36.65 | 36.32 | 37.12 | 36.31 | 28.02 | 28.97 | 28.77 | 29.79 |
| V2O3 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| FeO* | 10.14 | 10.42 | 10.66 | 10.20 | 10.53 | 10.19 | 12.89 | 11.90 | 11.45 | 11.64 |
| FeO | 9.36 | 9.47 | 9.87 | 9.48 | 9.47 | 8.98 | 11.73 | 9.09 | 9.77 | 10.50 |
| Fe2O3 | 0.88 | 1.06 | 0.89 | 0.81 | 1.18 | 1.35 | 1.29 | 3.12 | 1.86 | 1.27 |
| MnO | 0.14 | 0.05 | 0.11 | 0.07 | 0.11 | 0.13 | 0.18 | 0.22 | 0.07 | 0.23 |
| MgO | 17.95 | 18.07 | 17.68 | 17.93 | 18.24 | 18.27 | 17.27 | 18.95 | 18.64 | 18.25 |
| ZnO | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Total | 98.43 | 98.87 | 98.75 | 98.48 | 99.97 | 98.68 | 99.27 | 99.70 | 99.40 | 100.26 |
| Si | 0.02 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.00 | 0.01 | 0.01 | 0.00 |
| Al | 9.10 | 9.23 | 9.15 | 9.23 | 9.10 | 9.14 | 10.81 | 10.37 | 10.59 | 10.51 |
| Ti | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 |
| Fe3+ | 0.15 | 0.18 | 0.15 | 0.14 | 0.20 | 0.23 | 0.22 | 0.52 | 0.31 | 0.21 |
| Fe2+ | 1.81 | 1.82 | 1.90 | 1.83 | 1.80 | 1.73 | 2.20 | 1.69 | 1.82 | 1.95 |
| Mg | 6.18 | 6.18 | 6.08 | 6.16 | 6.19 | 6.26 | 5.77 | 6.28 | 6.18 | 6.04 |
| Mn | 0.03 | 0.01 | 0.02 | 0.01 | 0.02 | 0.03 | 0.03 | 0.04 | 0.01 | 0.04 |
| Cr | 6.71 | 6.56 | 6.69 | 6.62 | 6.68 | 6.60 | 4.97 | 5.09 | 5.06 | 5.22 |
| Zn | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| V | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Total | 24.00 | 24.00 | 24.00 | 24.00 | 24.00 | 24.00 | 24.00 | 24.00 | 24.00 | 24.00 |
| %Magn | 0.95 | 1.14 | 0.96 | 0.88 | 1.26 | 1.46 | 1.36 | 3.26 | 1.95 | 1.33 |
| %Herc | 57.01 | 57.79 | 57.21 | 57.70 | 56.94 | 57.21 | 67.57 | 64.90 | 66.35 | 65.90 |
| %Chro | 42.04 | 41.07 | 41.82 | 41.42 | 41.80 | 41.33 | 31.06 | 31.84 | 31.70 | 32.77 |
| Fe3+/Fe2+ | 0.08 | 0.10 | 0.08 | 0.08 | 0.11 | 0.14 | 0.10 | 0.31 | 0.17 | 0.11 |
| Fe2+/S2 | 0.23 | 0.23 | 0.24 | 0.23 | 0.23 | 0.22 | 0.27 | 0.21 | 0.23 | 0.24 |
| Fe3+/S3 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.03 | 0.02 | 0.01 |
| Cr# | 42.45 | 41.55 | 42.23 | 41.79 | 42.33 | 41.94 | 31.49 | 32.91 | 32.33 | 33.21 |
| Mg# | 77.37 | 77.28 | 76.15 | 77.13 | 77.43 | 78.38 | 72.41 | 78.79 | 77.27 | 75.61 |