Rock type
|
N
|
Olivine
(Fo) |
N
|
Orthopyroxene
(En) |
N
|
Clinopyroxene
(En) |
N
|
Plagioclase
(An) |
|---|---|---|---|---|---|---|---|---|
| Troctolite | (10) | 80.6 ± 1.3 | NA | (13) | 46.9 ± 2.0 | (10) | 65.0 ± 1.7 | |
| Troctolitic gabbro and microgabbro | (4) | 83.2 ± 1.0 | (1) | 82.9 | (3) | 50.7 ± 3.5 | (5) | 74.3 ± 3.1 |
| Olivine gabbro and microgabbro | (158) | 81.8 ± 4.6 | (140) | 66.9 ± 6.4 | (376) | 46.4 ± 4.5 | (605) | 51.3 ± 12.2 |
| Gabbro | (5) | 71.6 ± 1.2 | (8) | 69.6 ± 4.7 | (7) | 46.8 ± 5.9 | (18) | 51.3 ± 4.4 |
| Gabbronorite | NA | (16) | 61.2 ± 4.0 | (8) | 38.6 ± 1.1 | (17) | 38.8 ± 6.1 | |
| Fe-Ti oxide gabbro and microgabbro | (47) | 54.4 ± 11.7 | (85) | 60.7 ± 6.6 | (164) | 41.5 ± 4.6 | (303) | 37.8 ± 11.8 |
| Oxide gabbronorite | (1) | 64.7 | (6) | 61.9 ± 2.1 | (18) | 40.0 ± 2.0 | (16) | 44.2 ± 2.4 |
Notes: Number in parentheses = the number of microprobe analyses for that mineral. Bold number = the average composition of the mineral for that rock type. ± values = 1 standard deviation. NA = not analyzed.