Please login if you have access to particular applications.
Event details
Voyage: | IN2018_V08 [details] |
When: | 2019-01-04 02:08:57 UTC |
Log: | Geology_Rocks_in2018_v08 |
Equipment: | Not specified |
Position: | Latitude: -40.5781 Longitude: 153.346 Position from underway logging |
Sample number: | IN2018_V08_D13_060 |
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: | black | red | brown |
Composition: | intermediate |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar |
Phenocryst abundance (%): | 5-10 |
Phenocryst size range (mm): | 2 |
Groundmass: | microcrystaline | altered |
Vesicle abundance: | low (<30%) |
Sample bagged: | yes |
Sticker: | yes |
Bucket number: | 039 |
Rock name: | Trachyandesite? |
Comments: | Orange rock, looks vaguely pillow-like. Orange infill of vesicles? Some scattered feldspar phenocrysts. Felted feldspar crystals in the groundmass. 0.5 cm thick Mn crust. |