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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-21 13:39:33 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -13.2743 Longitude: 154.5078 Position from underway logging |
| Sample number: | in2019_v04_D33-035 |
| Dredge: | D33 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 5 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | grey-dark | grey-light | white | brown | yellow |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Groundmass: | microcrystaline | altered |
| Features: | other |
| Vesicle abundance: | absent |
| Sample bagged: | yes |
| Bucket number: | 52 |
| Rock name: | Highly fractured, altered, massive, igneous? rock |
| Comments: | Mn crust 90 mm thick. Thick Mn crust - heavily fractured and thus altered along veins - very fine grained microcrystalline grey matrix - possibly volcanic - no phenocrysts - massive boulder around 30x30cm - 1/3 of it crumbled during cutting |