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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-14 03:11:40 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_019 |
| Dredge: | D13 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 3 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-light | white | brown |
| Composition: | mafic |
| Phenocryst mineralogy: | feldspar | olivine[iddingsite] |
| Phenocryst abundance (%): | 40 |
| Phenocryst size range (mm): | <1-20 |
| Groundmass: | microcrystaline |
| Vesicle abundance: | 30-50% |
| Vesicle Filling (%): | 100 |
| Vesicle fill: | Clay |
| Alteration: | Mn crust | altered |
| Sample bagged: | yes |
| Bucket number: | 28 |
| Rock name: | Iron oxide altered feldspar olivine phyric basalt |
| Comments: | Mn crust <1 mm, large vesicles filled with clay are common, Mn transitions to lighter xeoliths, feldspar is abundant, calcite veins throughout the sample. |