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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-23 22:07:14 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -10.237 Longitude: 157.3042 Position from underway logging |
Sample number: | in2019_v04_D36-032 |
Dredge: | D36 |
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 |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar | pyroxene |
Phenocryst abundance (%): | 30 |
Phenocryst size range (mm): | 1-3 |
Groundmass: | crystalline |
Vesicle abundance: | 10-30% |
Vesicle Filling (%): | 100 |
Vesicle fill: | clay |
Sample bagged: | yes |
Bucket number: | 63 |
Rock name: | Highly altered feldspar phyric basalt |
Comments: | Altered feldspar and pyroxene. Veins filled with Fe2O3. Clay filled (100%) vesicles. Thick Mn crust |