Basalt
unit |
Core, section,
interval (cm) |
Titanomagnetite description
|
Other opaque minerals
|
|---|---|---|---|
| 197-1203A- | |||
| 1 | 17R-4, 27-30 | Completely altered to maghemite | None |
| 3 | 18R-3, 46-48 | Completely altered to maghemite | None |
| 5 | 25R-1, 65-67 | Ilmenite oxidation exsolution lamellae | Pentlandite |
| 6 | 26R-3, 39-41 | Unaltered | Pentlandite |
| 8 | 31R-1, 29-32 | Very fine grained, indistinct | None |
| 11 | 32R-1, 85-87 | Unaltered/slight ilmenite oxidation lamellae | Cr spinel, pentlandite |
| 14 | 35R-4, 47-49 | Unaltered | Cr spinel, pentlandite |
| 16 | 37R-3, 10-13 | Unaltered/slight ilmenite oxidation lamellae | Cr spinel, pentlandite |
| 18 | 40R-5, 119-121 | Unaltered | Secondary pyrite |
| 19 | 42R-5, 20-23 | Unaltered, very fine grained | Secondary pyrite |
| 20 | 45R-6, 45-47 | Unaltered, very fine grained | None |
| 21 | 48R-1, 57-61 | Slight maghemite alteration | Secondary pyrite |
| 23 | 51R-4, 93-96 | Unaltered | Secondary pyrite |
| 24 | 59R-2, 99-101 | Unaltered | Pentlandite, secondary pyrite |
| 26 | 59R-5, 30-32 | Very sparse and small titanomagnetite | None |
| 29 | 65R-4, 21-24 | Partially to completely altered to maghemite | None |
| 30 | 68R-3, 16-18 | Very fine grained, partially altered to maghemite | None |
| 31 | 68R-4, 29-30 | Very fine grained, indistinct | Pentlandite |