Chromites | Albites | ||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 | 2 | ||
SiO2 | 0.036 | 0.09 | 0.07 | 0.11 | 0.04 | 0.13 | 0.18 | 0.12 | SiO2 | 68.79 | 68.69 |
Al2O3 | 6.81 | 7.54 | 7.05 | 5.72 | 10.17 | 5.94 | 6.09 | 6.02 | Al2O3 | 19.57 | 19.82 |
FeO | 24.89 | 24.98 | 20.99 | 18.53 | 25.12 | 20.50 | 22.15 | 21.9 | Fe2O3 | 0.059 | 0.05 |
MnO | - | - | - | - | - | 0.33 | 0.35 | 0.34 | CaO | 0.058 | 0.20 |
MgO | 7.622 | 8.05 | 10.19 | 11.24 | 10.57 | 9.86 | 8.61 | 9.21 | Na2O | 12.08 | 12.07 |
TiO2 | 0.309 | 0.31 | 0.32 | 0.24 | 0.78 | 0.31 | 0.19 | 0.24 | K2O | 0.07 | 0.06 |
Cr2O3 | 58.374 | 57.60 | 59.56 | 61.54 | 51.0 | 60.78 | 59.84 | 60.21 | Total | 100 | 100 |
NiO | 0.12 | 0.14 | 0.12 | 0.17 | 0.15 | - | - | - | Si | 2.98 | 2.98 |
Total | 98.16 | 98.72 | 98.32 | 97.55 | 97.85 | 97.86 | 97.44 | 98.06 | AlIV | 1.003 | 1.01 |
Si | 0.001 | 0.003 | 0.002 | 0.003 | 0.001 | 0.004 | 0.006 | 0.004 | Fe3+ | 0.002 | 0.002 |
Al | 0.27 | 0.30 | 0.28 | 0.23 | 0.39 | 0.24 | 0.25 | 0.24 | Ca | 0.003 | 0.01 |
Fe3+ | 0.12 | 0.13 | 0.11 | 0.11 | 0.23 | 0.10 | 0.10 | 0.11 | Na | 1.02 | 1.015 |
Fe2+ | 0.60 | 0.58 | 0.47 | 0.42 | 0.46 | 0.48 | 0.54 | 0.51 | K | 0.004 | 0.004 |
Mn | - | - | - | - | - | 0.01 | 0.01 | 0.01 | |||
Mg | 0.39 | 0.41 | 0.51 | 0.57 | 0.52 | 0.5 | 0.44 | 0.47 | |||
Ti | 0.01 | 0.007 | 0.008 | 0.006 | 0.01 | 0.008 | 0.005 | 0.006 | |||
Cr | 1.59 | 1.55 | 1.59 | 1.65 | 1.34 | 1.64 | 1.64 | 1.63 | |||
Ni | 0.002 | 0.003 | 0.002 | 0.004 | 0.003 | - | - | - | |||
100 Mg/Mg + Fe | 39.55 | 41.36 | 51.83 | 57.51 | 53.22 | 51.08 | 45.17 | 47.82 | |||
100 Cr/Cr + Al | 85.17 | 83.66 | 84.99 | 87.83 | 77.08 | 87.28 | 86.8 | 87.01 | |||
Cr/M3+ | 0.79 | 0.77 | 0.79 | 0.82 | 0.67 | 0.82 | 0.82 | 0.81 | |||
Al/M3+ | 0.13 | 0.15 | 0.14 | 0.11 | 0.19 | 0.11 | 0.12 | 0.12 | |||
Fe3+/M3+ | 0.05 | 0.06 | 0.05 | 0.05 | 0.11 | 0.05 | 0.05 | 0.05 | |||
Fe2+/M2+ | 0.60 | 0.58 | 0.48 | 0.42 | 0.46 | 0.48 | 0.54 | 0.52 | |||
Mg/M2+ | 0.39 | 0.4 | 0.51 | 0.57 | 0.53 | 0.50 | 0.44 | 0.47 | |||
Mg + Fe2+ | 0.99 | 0.99 | 0.99 | 0.99 | 0.98 | 0.98 | 0.98 | 0.98 | |||
Mg/(Mg + Fe2+) | 0.39 | 0.41 | 0.51 | 0.57 | 0.53 | 0.51 | 0.45 | 0.47 |