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Event details
Voyage: | IN2020_V01 [details] |
When: | 2020-02-14 22:47:37 UTC |
Log: | Geology_Rocks_in2020_v01 |
Equipment: | Not specified |
Position: | Latitude: -46.6761 Longitude: 84.9787 Position from underway logging |
Sample number: | IN2020_V01_D12_001 |
Dredge: | D12 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | yes, in IN2020_V01_D12_001 |
Number of photos: | 4 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black |
Composition: | mafic |
Alteration: | Fresh | Mn crust |
Phenocryst mineralogy: | feldspar | glass[fresh] | pyroxene |
Phenocryst abundance (%): | 25 |
Phenocryst size range (mm): | 1-8 |
Groundmass: | glassy |
Mn crust thickness (mm): | <1 |
Vesicle abundance: | <10% |
Vesicle Filling (%): | 0 |
Sample bagged: | yes |
Bucket number: | 1 of 3 |
Rock name: | Vesicular, variably glassy pyroxene-phyric basalt |
Original Sample Dimensions: | 37x20x21 cm |
Comments: | Pyroxene is the dominant phenocryst phase (feldspar<1%). One fracture. |