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Table 2
Distribution of iron content in mineral phases after Mössbauer spectroscopic analysis of F1 (12 to 51) and Glc1 (1 to 10) cuttings.
| Sample | Depth | Cpx | Frh | Olivine | Fe-Chlorite | Hematite | Magnetite | Ilmenite | Maghemite | Pyrite | Fe3+/Fetotal | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
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| (m) | (Fe2+) | (Fe3+) | (Fe2+) | (Fe3+) | (Fe2+) | (Fe3+) | (Fe3+) | (Fe2+/3+) | (Fe2+) | (Fe3+) | (Fe2+) | (%) | |
| 12 | 149 | 31 | 24 | 3 | – | – | 14 | 6 | 6 | – | 16 | – | 63.0 |
| 13 | 208 | 24 | 22 | – | – | – | 20 | 3 | 3 | – | 28 | – | 74.5 |
| 14 | 254 | 26 | 23 | 3 | – | – | 8 | 5 | 5 | 4 | 30 | – | 68.5 |
| 16 | 354 | 28 | 26 | 8 | – | – | 8 | 12 | 12 | 8 | 12 | – | 64.0 |
| 17 | 404 | 14 | 36 | 11 | – | – | 6 | 6 | 6 | 8 | 13 | – | 64.0 |
| 18 | 434 | 15 | 31 | 9 | – | – | 16 | 6 | 6 | 3 | 14 | – | 70.0 |
| 19 | 464 | 4 | 26 | 11 | – | – | 15 | 8 | 8 | 4 | 24 | – | 77.0 |
| 21 | 518 | 10 | 16 | 12 | – | – | 20 | 11 | 11 | 2 | 18 | – | 68.5 |
| 22 | 536 | – | – | – | 18 | 30 | 31 | 9 | 9 | – | – | – | 62.5 |
| 23 | 552 | – | – | – | 20 | 48 | 13 | 8 | 8 | 3 | – | – | 45.0 |
| 26 | 616 | 17 | – | – | 16 | 13 | 7 | 16 | 17 | 14 | – | – | 47.5 |
| 30 | 694 | – | – | 18 | 37 | 28 | – | – | – | – | – | 17 | 37.0 |
| 33 | 754 | – | – | – | 17 | 45 | 21 | 7 | 7 | 3 | – | – | 48.5 |
| 38 | 854 | – | – | – | 12 | 42 | 28 | 5 | 5 | – | – | – | 55.5 |
| 39 | 871 | – | – | – | 20 | 59 | 7 | 5 | 5 | 4 | – | – | 34.5 |
| 43 | 954 | 11 | – | – | 14 | 30 | 6 | 14 | 15 | 10 | – | – | 41.5 |
| 47 | 1034 | 27 | – | – | 19 | 28 | – | 12 | 14 | – | – | – | 38.0 |
| 48 | 1054 | – | – | – | 11 | 49 | 8 | 13 | 13 | 6 | – | – | 38.5 |
| 50 | 1091 | 17 | – | – | 15 | 38 | 3 | 9 | 9 | 9 | – | – | 31.5 |
| 51 | 1118 | – | – | – | 11 | 64 | – | 9 | 8 | 8 | – | – | 24.0 |
| 1 | 76 | 4 | 80 | – | – | – | – | 2 | 2 | 12 | – | – | 95.0 |
| 2 | 160 | – | 78 | – | – | – | 22 | – | – | – | – | – | 100.0 |
| 3 | 250 | 19 | 25 | – | – | – | 20 | 3 | 3 | 30 | – | – | 79.5 |
| 4 | 280 | 24 | 19 | – | – | – | 23 | 5 | 5 | 24 | – | – | 73.5 |
| 5 | 310 | – | 76 | 4 | – | – | 20 | – | – | – | – | – | 96.0 |
| 6 | 340 | – | 44 | 56 | – | – | – | – | – | – | – | – | 44.0 |
| 7 | 370 | 19 | 36 | 30 | – | – | – | 4 | 4 | – | 7 | – | 42.0 |
| 8 | 400 | – | 39 | 26 | – | – | 35 | – | – | – | – | – | 74.0 |
| 9 | 420 | – | 35 | 17 | – | – | 48 | – | – | – | – | – | 83.0 |
| 10 | 458 | – | 47 | 19 | – | – | 19 | – | – | – | – | – | 66.0 |
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