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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-21 01:02:58 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -12.6486 Longitude: 153.6429 Position from underway logging |
| Sample number: | in2019_v04_D32_018 |
| Dredge: | D32 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 3 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-dark | grey-light |
| Composition: | intermediate |
| Phenocryst mineralogy: | olivine[iddingsite] | altered |
| Phenocryst abundance (%): | 10 |
| Phenocryst size range (mm): | <1 - 1 |
| Groundmass: | microcrystaline |
| Vesicle abundance: | 10-30% |
| Vesicle Filling (%): | 100 |
| Vesicle fill: | other |
| Alteration: | Mn crust | altered |
| Sample bagged: | yes |
| Bucket number: | 45 |
| Rock name: | Altered microcrystalline basalt |
| Comments: | Mn-crust 10 mm, small crystals are obvious with an olivine shape, vesicles are filled with unkown material, some are slightly altered, amygdales are present in the Mn crust |