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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-17 23:40:57 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -14.3231 Longitude: 156.2176 Position from underway logging |
| Sample number: | in2019_v04_D24_002 |
| Dredge: | D24 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 1 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-light | brown |
| Composition: | intermediate |
| Groundmass: | microcrystaline | altered |
| Vesicle abundance: | <10% |
| Vesicle Filling (%): | 50 |
| Vesicle fill: | Clay |
| Alteration: | Mn crust | altered |
| Sample bagged: | yes |
| Bucket number: | 36 |
| Rock name: | Altered Trachyte |
| Comments: | very fine grained crystalline groundmass - white, red and black crystals (plag, K-feldspar?), same sizes but no orientations. Likely more evolved composition (white under microscope). Few vesicles but large (8mm diameter) |