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Event details
| Voyage: | IN2018_V08 [details] |
| When: | 2019-01-03 06:36:54 UTC |
| Log: | Geology_Rocks_in2018_v08 |
| Equipment: | Not specified |
| Position: | Latitude: -39.522 Longitude: 154.1234 Position from underway logging |
| Sample number: | IN2018_V08_D01_069 |
| Dredge: | 01 |
| Dredge Date: | 29/12/2018 |
| 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 | brown | yellow |
| Composition: | intermediate |
| Alteration: | Mn crust |
| Phenocryst mineralogy: | feldspar | amphibole |
| Phenocryst abundance (%): | 15 |
| Phenocryst size range (mm): | 0.5-2 |
| Groundmass: | microcrystaline |
| Sample bagged: | yes |
| Sticker: | yes |
| Bucket number: | 001 |
| Rock name: | phyric basaltic-andesite or andesite (hornblende possible) |
| Comments: | thick mn crust 2cm on one side with encrusted non-vesicular volcanic subrounded to angular fragments, thin mn and hematite alteration on other side |