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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-21 10:46:00 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -13.4097 Longitude: 153.9988 Position from underway logging |
Sample number: | in2019_v04_D33-031 |
Dredge: | D33 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 3 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black | brown | yellow |
Composition: | sedimentary |
Alteration: | Mn crust | altered |
Grain size: | cobble (>64 mm) |
Grain shape: | rounded |
Sorting: | moderate |
Components: | other |
Sample bagged: | yes |
Bucket number: | 48 |
Rock name: | Manganese nodule with core of clay and detrital volcaniclastic grains |
Comments: | Mn crust 15 mm thick. Core of clay surrounded by thick Mn crust - some clear elongate crystals within the clay, possible plag laths - a few white mica crystals - and some shiny black minerals concentrated close to the Mn crust, cubic in shape, unsure of, maybe pyroxene? |