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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-31 22:25:39 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -23.9238 Longitude: 159.3071 Position from underway logging |
| Sample number: | in2019_v04_D54_012 |
| Dredge: | D54 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 4 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-dark | brown |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | feldspar | olivine[iddingsite] |
| Phenocryst abundance (%): | <10 |
| Phenocryst size range (mm): | 1-3 |
| Groundmass: | microcrystaline |
| Vesicle abundance: | 30-50% |
| Vesicle Filling (%): | 10 |
| Vesicle fill: | Calcite, Fe-oxide |
| Sample bagged: | yes |
| Bucket number: | 93 |
| Rock name: | Highly vesicular altered feldspar-rich basalt |
| Comments: | Mn-crust 0.5 mm, vein infilled with calcite through rock, coral fragment on Mn-crust |