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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-31 11:57:41 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -22.9411 Longitude: 159.7901 Position from underway logging |
| Sample number: | in2019_v04_D53-004 |
| Dredge: | D53 |
| 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: | olivine[iddingsite] |
| Phenocryst abundance (%): | 25 |
| Phenocryst size range (mm): | 4 |
| Groundmass: | altered | crystalline |
| Features: | other |
| Vesicle abundance: | 10-30% |
| Vesicle Filling (%): | 25 |
| Vesicle fill: | calcite |
| Sample bagged: | yes |
| Bucket number: | 92 |
| Rock name: | Altered iddingsite phyric basalt |
| Comments: | Elongate vesicles towards top of column - Large iddingsite phenocrysts |