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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-21 13:27:06 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -13.2842 Longitude: 154.4706 Position from underway logging |
Sample number: | in2019_v04_D33-025 |
Dredge: | D33 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 4 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black | grey-light | white | green |
Composition: | mafic |
Alteration: | Mn crust | altered |
Groundmass: | microcrystaline | altered |
Sample bagged: | yes |
Bucket number: | 49 |
Rock name: | Highly altered, veined, igneous? clast |
Comments: | Mn crust 35 mm thick. Pervasive fractures and veining filled with zeolite and clay - no clear phenocrysts - spots of white and black could be crystals or vesicles - probably from larger breccia |