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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-25 20:34:24 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -13.3286 Longitude: 158.9301 Position from underway logging |
| Sample number: | in2019_v04_D41-005 |
| Dredge: | D41 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 3 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | grey-light | brown | yellow |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | feldspar | pyroxene |
| Phenocryst abundance (%): | 100 |
| Phenocryst size range (mm): | 0.5-1 |
| Groundmass: | crystalline |
| Features: | other |
| Vesicle abundance: | absent |
| Vesicle Filling (%): | 0 |
| Sample bagged: | yes |
| Bucket number: | 74 |
| Rock name: | Massive, slightly altered, dolerite |
| Comments: | Very similar to D41-002 + 003 + 004, slightly finer grained, plag lattice and pyroxene presumed (no clear crystal shapes), slight yellow alteration, some fresh plag |