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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-31 22:19:41 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -23.9212 Longitude: 159.3082 Position from underway logging |
| Sample number: | in2019_v04_D54_009 |
| Dredge: | D54 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 6 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | white | red | brown |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | olivine[iddingsite] | pyroxene |
| Phenocryst abundance (%): | 30 |
| Phenocryst size range (mm): | <1 - 4 |
| Groundmass: | altered |
| Vesicle abundance: | 10-30% |
| Vesicle Filling (%): | 50 |
| Vesicle fill: | Calcite, clay |
| Sample bagged: | yes |
| Bucket number: | 91 |
| Rock name: | Altered vesicular basalt |
| Comments: | Mn-crust 10 mm, contains vesciles that increase towards the edge of the sample, the vesicles become more infilled towards the edge, feldspar crystals appear fresh |