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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-21 02:59:51 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -12.6494 Longitude: 153.6422 Position from underway logging |
| Sample number: | in2019_v04_D32_037 |
| Dredge: | D32 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 2 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | grey-light | brown |
| Composition: | sedimentary |
| Phenocryst mineralogy: | feldspar |
| Groundmass: | altered |
| Vesicle abundance: | absent |
| Alteration: | Mn crust | altered |
| Grain size: | pebble (2-64 mm) |
| Grain shape: | angular |
| Components: | volcanic non-vesicular |
| Sample bagged: | yes |
| Bucket number: | 46 |
| Rock name: | Mn-oxide nodule around a pebble of altered feldspar-phyric andesite? |
| Comments: | Mn-crust 20 mm, groundmass crystalline, Mn - Fe oxide coating over angular pebble of feldspar phyric andesite. Crystalls of feldspar up to 3 mm. andesite + diorite? |