Table T7. Average primary modes of Leg 176 rocks determined by point counting.
| Rock type | N | Plagioclase | Olivine | Clinopyroxene | Orthopyroxene | Opaques | Amphibole | Apatite |
|---|---|---|---|---|---|---|---|---|
| Troctolite | 7 | 66.6 | 30.4 | 2.8 | 0.0 | 0.2 | 0.0 | 0.0 |
| Troctolitic gabbro | 12 | 72.8 | 16.1 | 10.7 | 0.1 | 0.2 | 0.1 | 0.0 |
| Olivine gabbro | 118 | 59.5 | 9.8 | 29.9 | 0.2 | 0.3 | 0.3 | 0.0 |
| Olivine microgabbro | 11 | 58.4 | 8.8 | 32.1 | 0.1 | 0.2 | 0.4 | 0.0 |
| Gabbro | 25 | 58.5 | 3.3 | 37.5 | 0.2 | 0.4 | 0.3 | 0.0 |
| Gabbronorite* | 15 | 64.6 | 2.7 | 27.5 | 3.5 | 0.7 | 0.8 | 0.0 |
| Oxide gabbronorite** | 13 | 50.6 | 0.8 | 34.5 | 3.5 | 9.4 | 0.4 | 0.5 |
| Oxide gabbro*** | 3 | 51.4 | 1.9 | 40.2 | 0.2 | 6.3 | 0.1 | 0.5 |
| Oxide microgabbro | 5 | 58.5 | 10.9 | 25.8 | 1.5 | 1.8 | 1.4 | 0.1 |
Note: * = orthopyroxene-bearing gabbro, ** = orthopyroxene-bearing oxide gabbro, *** = disseminated oxide gabbro.