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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-14 02:56:57 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -17.4893 Longitude: 155.8815 Position from underway logging |
| Sample number: | in2019_v04_D13_013 |
| Dredge: | D13 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 4 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-dark | white | brown |
| Composition: | mafic |
| Phenocryst mineralogy: | feldspar | olivine[iddingsite] | amphibole |
| Phenocryst abundance (%): | 60 |
| Phenocryst size range (mm): | <1-10 |
| Vesicle abundance: | 10-30% |
| Vesicle Filling (%): | 30 |
| Vesicle fill: | Clay |
| Alteration: | Mn crust | altered |
| Sample bagged: | yes |
| Bucket number: | 27 |
| Rock name: | Altered vesicle basalt |
| Comments: | Mn crust <1 mm, large vesicles filled with clay, amphibole and pyroxene crystals have been altered, but retained their shape, fine grained. |