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Event details
Voyage: | IN2020_V01 [details] |
When: | 2020-02-04 15:14:35 UTC |
Log: | Geology_Rocks_in2020_v01 |
Equipment: | Not specified |
Position: | Latitude: -53.1424 Longitude: 82.006 Position from underway logging |
Sample number: | IN2020_V01_D09_030 |
Dredge: | D09 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | yes, in IN2020_V01_D09_030 |
Number of photos: | 4 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | grey-light |
Composition: | felsic |
Alteration: | altered |
Phenocryst mineralogy: | feldspar | quartz |
Groundmass: | crystalline |
Sample bagged: | yes |
Bucket number: | MQU6 (D08/D09/D12 1 of 2) |
Rock name: | Felsic gneiss |
Original Sample Dimensions: | 20 x 15 x 9 cm |
Comments: | Subtle alteration and weak fracturing. Strong foliation and compositional banding (dominated by light minerals). Alteration concentrated along fractures. |