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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-19 20:41:46 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -13.9793 Longitude: 155.5167 Position from underway logging |
| Sample number: | in2019_v04_D30_015 |
| Dredge: | D30 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 9 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | grey-dark | grey-light | brown |
| Composition: | mafic |
| Phenocryst mineralogy: | feldspar |
| Phenocryst abundance (%): | 3 |
| Phenocryst size range (mm): | 1-3 |
| Groundmass: | microcrystaline |
| Vesicle abundance: | 10-30% |
| Vesicle Filling (%): | 80 |
| Vesicle fill: | Calcite, lay, caledonite |
| Alteration: | Mn crust | altered |
| Sample bagged: | yes |
| Bucket number: | 43 |
| Rock name: | Sparsley feldspar phyric altered basalt |
| Comments: | Mn-crust 11- 60 mm, manganese crust changes character, vesicles ranging in size 1 - 12 mm. |