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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-26 02:57:23 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -14.0828 Longitude: 159.6679 Position from underway logging |
| Sample number: | in2019_v04_D42-009 |
| Dredge: | D42 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 7 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | white | brown |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | feldspar | pyroxene |
| Phenocryst abundance (%): | 20 |
| Phenocryst size range (mm): | 1-2 |
| Groundmass: | glassy | altered |
| Vesicle abundance: | 30-50% |
| Vesicle Filling (%): | 90 |
| Vesicle fill: | Calcite |
| Sample bagged: | yes |
| Bucket number: | 79 |
| Rock name: | Moderately altered pyroxene - phyric vesicular basalt |
| Comments: | Spherical white calcite surrounded by a second phase of carbonate infilling vesicles. Two different kinds of alteration. Perlitic fracturing in glass. Manganese alteration of vesicles and phenocrysts |