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Event details
Voyage: | IN2018_V08 [details] |
When: | 2019-01-03 12:30:06 UTC |
Log: | Geology_Rocks_in2018_v08 |
Equipment: | Not specified |
Position: | Latitude: -39.6302 Longitude: 153.9547 Position from underway logging |
Sample number: | IN2018_V08_D12_006 |
Dredge: | 12 |
Dredge Date: | 03/01/2019 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Sample sawn: | Yes |
Sawn sample photographed: | Yes |
Number of photos: | 2 |
Colour: | black | grey-light | brown |
Composition: | mafic |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar |
Phenocryst abundance (%): | <1 |
Phenocryst size range (mm): | 0.5-1 |
Groundmass: | microcrystaline | altered |
Sample bagged: | yes |
Sticker: | yes |
Bucket number: | 032 |
Rock name: | feldspar phyric basalt |
Comments: | 1cm manganese crust - poitroidal, iron oxide present underneath mn crust, fractures with iron oxide inside, non vesicular |