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Event details
| Voyage: | IN2018_V08 [details] |
| When: | 2019-01-04 02:08:57 UTC |
| Log: | Geology_Rocks_in2018_v08 |
| Equipment: | Not specified |
| Position: | Latitude: -40.5781 Longitude: 153.346 Position from underway logging |
| Sample number: | IN2018_V08_D13_060 |
| Dredge: | 13 |
| Dredge Date: | 04/01/2019 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Sample sawn: | Yes |
| Sawn sample photographed: | Yes |
| Number of photos: | 2 |
| Colour: | black | red | brown |
| Composition: | intermediate |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | feldspar |
| Phenocryst abundance (%): | 5-10 |
| Phenocryst size range (mm): | 2 |
| Groundmass: | microcrystaline | altered |
| Vesicle abundance: | low (<30%) |
| Sample bagged: | yes |
| Sticker: | yes |
| Bucket number: | 039 |
| Rock name: | Trachyandesite? |
| Comments: | Orange rock, looks vaguely pillow-like. Orange infill of vesicles? Some scattered feldspar phenocrysts. Felted feldspar crystals in the groundmass. 0.5 cm thick Mn crust. |