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Event details
| Voyage: | IN2020_V01 [details] |
| When: | 2020-02-15 19:07:28 UTC |
| Log: | Geology_Rocks_in2020_v01 |
| Equipment: | Not specified |
| Position: | Latitude: -43.8431 Longitude: 87.357 Position from underway logging |
| Sample number: | IN2020_V01_D12_015 |
| Dredge: | D12 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | yes, in IN2020_V01_D12_015 |
| Number of photos: | 5 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | grey-light |
| Composition: | mafic |
| Alteration: | Mn crust | altered |
| Phenocryst mineralogy: | feldspar | biotite | amphibole |
| Phenocryst abundance (%): | 15 |
| Phenocryst size range (mm): | 2-8 |
| Groundmass: | microcrystaline |
| Mn crust thickness (mm): | 1 |
| Vesicle abundance: | <10% |
| Vesicle Filling (%): | 0 |
| Sample bagged: | yes |
| Bucket number: | 3 of 3 |
| Rock name: | vesicular, porphyritic, microcrystalline basalt |
| Original Sample Dimensions: | 9x6.5x3 cm |
| Comments: | phenocrysts altered along the rims; moderately magnetic; Fe-staining; |