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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-23 03:19:43 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -10.8089 Longitude: 156.7657 Position from underway logging |
Sample number: | in2019_v04_D35_014 |
Dredge: | D35 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 3 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black | grey-dark | grey-light |
Composition: | intermediate |
Phenocryst mineralogy: | feldspar | olivine[iddingsite] | other |
Phenocryst abundance (%): | 25 |
Phenocryst size range (mm): | <1 |
Groundmass: | altered |
Vesicle abundance: | 30-50% |
Vesicle Filling (%): | 20 |
Vesicle fill: | Calcite |
Alteration: | Mn crust | altered |
Sample bagged: | yes |
Bucket number: | 55 |
Rock name: | Altered fine grained basalt |
Comments: | Mn crust 12 mm, very fine grained mass, calcite fills vesicles in some places. |