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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-21 02:51:18 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -12.6496 Longitude: 153.6421 Position from underway logging |
| Sample number: | in2019_v04_D32_034 |
| Dredge: | D32 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 4 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black |
| Composition: | intermediate |
| Phenocryst mineralogy: | feldspar |
| Phenocryst abundance (%): | 50 |
| Phenocryst size range (mm): | 1-3 |
| Groundmass: | microcrystaline |
| Vesicle abundance: | absent |
| Alteration: | Mn crust |
| Sample bagged: | yes |
| Bucket number: | 46 |
| Rock name: | Mn oxide surrounding feldspar quartz dacite pebble |
| Comments: | Mn-crust 70 mm, pink-brown groundmass, not react with HCl. |