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Event details
Voyage: | IN2020_V01 [details] |
When: | 2020-02-04 07:25:02 UTC |
Log: | Geology_Rocks_in2020_v01 |
Equipment: | Not specified |
Position: | Latitude: -53.4581 Longitude: 82.2394 Position from underway logging |
Sample number: | IN2020_V01_D08_002 |
Dredge: | D08 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes in2020_v01_D08_002 |
Number of photos: | 3 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | grey-light | yellow |
Composition: | mafic |
Alteration: | altered |
Phenocryst mineralogy: | feldspar |
Phenocryst abundance (%): | 0 |
Groundmass: | microcrystaline |
Mn crust thickness (mm): | 35-65 mm |
Vesicle abundance: | 10-30% |
Vesicle Filling (%): | 95 |
Vesicle fill: | other |
Sample bagged: | yes |
Bucket number: | 1 of 2 |
Rock name: | Aphyric vesicular basalt |
Original Sample Dimensions: | 16x27x19.5 cm |
Comments: | Moderate fracturing. Minor veining. thin infilled fracture across with white mineral; moderately magnetic - magnetite; MnOOH crust is not magnetic |