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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-17 23:45:14 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -14.3252 Longitude: 156.2181 Position from underway logging |
| Sample number: | in2019_v04_D24_003 |
| Dredge: | D24 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 2 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | grey-dark |
| Composition: | mafic |
| Phenocryst mineralogy: | feldspar | altered |
| Phenocryst abundance (%): | 10 |
| Phenocryst size range (mm): | 1-2 |
| Groundmass: | altered |
| Vesicle abundance: | 10-30% |
| Vesicle Filling (%): | 30 |
| Vesicle fill: | clay, possibly zeolite |
| Alteration: | Mn crust |
| Sample bagged: | yes |
| Bucket number: | 36 |
| Rock name: | Altered vesicular feldspar phyric basalt |
| Requested: | Monash |
| Comments: | Vesicle infill of celadinite(?) - some green mineral. Altered feldspathic matrix and some 1-2mm phenocrysts |