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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-28 22:24:30 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -17.0996 Longitude: 159.2146 Position from underway logging |
| Sample number: | in2019_v04_D48_013 |
| Dredge: | D48 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 5 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | white | red | brown |
| Composition: | mafic |
| Alteration: | Mn crust |
| Phenocryst mineralogy: | feldspar | olivine[iddingsite] |
| Phenocryst abundance (%): | 10 |
| Phenocryst size range (mm): | 1-3 |
| Groundmass: | altered |
| Vesicle abundance: | >50% |
| Vesicle Filling (%): | 50 |
| Vesicle fill: | Clay, zeolite |
| Sample bagged: | yes |
| Bucket number: | 84 |
| Rock name: | Altered vesicular olivine-phyric basalt |
| Comments: | Mn-crust 90 mm, vesicles get coarses towards the centre (from 0.1 to 2 mm) |