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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-14 03:16:09 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -17.4902 Longitude: 155.8831 Position from underway logging |
| Sample number: | in2019_v04_D13_021 |
| Dredge: | D13 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 15 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-dark |
| Composition: | mafic |
| Phenocryst mineralogy: | feldspar | olivine[iddingsite] |
| Phenocryst abundance (%): | <5 |
| Phenocryst size range (mm): | 1-2 |
| Groundmass: | microcrystaline | altered |
| Vesicle abundance: | 10-30% |
| Vesicle Filling (%): | 100 |
| Vesicle fill: | Zeolite, Clay |
| Alteration: | Mn crust | altered |
| Sample bagged: | yes |
| Bucket number: | 30 (2/6 pieces), 31 (4/6 pieces) |
| Rock name: | Altered vesicular feldspar phyric basalt |
| Comments: | Mn-crust 1 mm, Zeolite (15%) and clay (85%) infilled vesicles, Fe oxide altered groundmass, vesicles are clustered together in bands. |