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Event details
Voyage: | IN2020_V01 [details] |
When: | 2020-02-15 18:39:31 UTC |
Log: | Geology_Rocks_in2020_v01 |
Equipment: | Not specified |
Position: | Latitude: -43.92 Longitude: 87.295 Position from underway logging |
Sample number: | IN2020_V01_D12_010 |
Dredge: | D12 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | yes, in IN2020_V01_D12_010 |
Number of photos: | 4 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | grey-dark |
Composition: | mafic |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar | pyroxene | biotite |
Phenocryst abundance (%): | 0 |
Groundmass: | microcrystaline |
Mn crust thickness (mm): | <1 |
Vesicle abundance: | <10% |
Vesicle Filling (%): | 50 |
Vesicle fill: | clay and other |
Sample bagged: | yes |
Bucket number: | 3 of 3 |
Rock name: | moderately altered, aphanitic basalt |
Original Sample Dimensions: | 17.5x9x5 cm |
Comments: | minor fracturing; zone of finer grains; occasional pyroxene and plagioclase pseudomorphs |