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Event details
Voyage: | IN2020_V01 [details] |
When: | 2020-02-04 16:42:08 UTC |
Log: | Geology_Rocks_in2020_v01 |
Equipment: | Not specified |
Position: | Latitude: -53.222 Longitude: 81.7431 Position from underway logging |
Sample number: | IN2020_V01_D10_001 |
Dredge: | D10 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | yes, in IN2020_V01_D10_001 |
Number of photos: | 3 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | grey-dark |
Composition: | mafic |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar |
Phenocryst abundance (%): | 5 |
Phenocryst size range (mm): | 0-1 |
Groundmass: | microcrystaline | banded |
Mn crust thickness (mm): | 2 |
Vesicle abundance: | absent |
Sample bagged: | no |
Bucket number: | 1 of 1 |
Rock name: | Phaneritic basalt |
Original Sample Dimensions: | 8.5x15.5x8.5 cm |
Comments: | Weak banding of felsic (probably plagioclase) minerals. Weakly altered. |