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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-23 05:01:15 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -10.5009 Longitude: 156.8499 Position from underway logging |
Sample number: | in2019_v04_D35-025 |
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: | mafic |
Phenocryst mineralogy: | feldspar | pyroxene |
Phenocryst abundance (%): | 20 |
Phenocryst size range (mm): | 1-2mm |
Groundmass: | microcrystaline | altered |
Vesicle abundance: | absent |
Alteration: | Mn crust | altered |
Sample bagged: | yes |
Bucket number: | 57 |
Rock name: | Altered feldspar-pyroxene-phyric basalt |
Comments: | MN crust. Veins filled with Fe2O3/clay. Black crystals may be pyroxene. |