Table T21. Halo types and occurences.
| Halo type | Secondary minerals | Total (vol%) |
Top | Bottom | Width (mm) | |||
|---|---|---|---|---|---|---|---|---|
| Core | Depth (mbsf) |
Core | Depth (mbsf) |
|||||
| Minimum | Maximum | |||||||
| 309-1256D- | 309-1256D- | |||||||
| Black | Celadonite, saponite | 0.8 | 75R-1 | 752 | 91R-1 | 820 | 0.2 | 20 |
| Brown | Iron oxyhydroxides, saponite | 0.2 | 76R-1 | 753.9 | 101R-2 | 820 | 0.1 | 5 |
| Mixed | Celadonite, iron oxyhydroxides, saponite | 2 | 75R-1 | 752 | 91R-1 | 850 | 0.3 | 50 |
| Pyrite rich | Pyrite (either disseminated in halo or as front at the boundary with host rock), saponite/chlorite | 0.1 | 96R-1 | 893 | 128R-1 | 1056.9 | 0.1 | 0.7 |
| Simple dark to light gray and dark to light green | Saponite or saponite/chlorite | 0.4 | 84R-2 | 803.3 | 128R-1 | 1056.9 | 0.1 | 12 |
| Simple or composite dark/light gray/green | Chlorite/saponite or chlorite, actinolite, titanite | 0.4 | 128R-1 | 1056.9 | 170R-3 | 1255.1 | 0.1 | 12 |
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