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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-19 21:01:35 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -13.9178 Longitude: 155.5239 Position from underway logging |
Sample number: | in2019_v04_D30_021 |
Dredge: | D30 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 2 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black | red |
Composition: | mafic |
Phenocryst mineralogy: | altered |
Groundmass: | altered |
Vesicle abundance: | 10-30% |
Vesicle Filling (%): | 50 |
Vesicle fill: | Clay |
Alteration: | Mn crust | altered |
Sample bagged: | yes |
Bucket number: | 41 |
Rock name: | Mn crust iron oxide altered vesicular basalt |
Comments: | Majority Mn but small area (5mm thick) of red (fe-altered) basalt. Lots of tiny vesicles, calcite veins and Mn filled fractures. |