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Event details
Voyage: | IN2018_V08 [details] |
When: | 2019-01-03 23:21:29 UTC |
Log: | Geology_Rocks_in2018_v08 |
Equipment: | Not specified |
Position: | Latitude: -40.408 Longitude: 153.3083 Position from underway logging |
Sample number: | IN2018_V08_D13_017 |
Dredge: | 13 |
Dredge Date: | 04/01/2019 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Sample sawn: | Yes |
Sawn sample photographed: | Yes |
Number of photos: | 2 |
Colour: | grey-dark | red | brown |
Composition: | mafic |
Alteration: | Fresh | altered |
Phenocryst mineralogy: | pyroxene |
Phenocryst abundance (%): | 1 |
Phenocryst size range (mm): | 0.5-1 |
Groundmass: | microcrystaline |
Vesicle abundance: | low (<30%) |
Sample bagged: | yes |
Sticker: | yes |
Bucket number: | 037 |
Rock name: | Basalt |
Comments: | pyroxene phenocrysts? altered red around margins |