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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-23 21:17:48 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -10.2239 Longitude: 157.2985 Position from underway logging |
| Sample number: | in2019_v04_D36-023 |
| Dredge: | D36 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 3 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | grey-dark | red |
| Composition: | mafic |
| Phenocryst mineralogy: | feldspar | olivine[fresh] | pyroxene |
| Phenocryst abundance (%): | 30 |
| Phenocryst size range (mm): | 1.5 |
| Vesicle abundance: | absent |
| Alteration: | Mn crust | altered |
| Sample bagged: | yes |
| Bucket number: | 61 |
| Rock name: | Altered feldspar phyric basalt with calcite veins |
| Comments: | Medium to fine grained. White calcite veins. Red alteration in vein shape (Fe Oxi?). Under microscope yellow/ pale green or alteration |