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Event details
Voyage: | IN2020_V01 [details] |
When: | 2020-02-26 02:45:58 UTC |
Log: | Geology_Rocks_in2020_v01 |
Equipment: | Not specified |
Position: | Latitude: -32.8176 Longitude: 97.6636 Position from underway logging |
Sample number: | IN2020_V01_D17_007 |
Dredge: | D17 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | yes, in IN2020_V01_D17_007 |
Number of photos: | 4 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | grey-light |
Composition: | mafic |
Alteration: | Mn crust | altered |
Phenocryst abundance (%): | 0 |
Groundmass: | microcrystaline | altered |
Mn crust thickness (mm): | <1 |
Vesicle abundance: | absent |
Sample bagged: | yes |
Bucket number: | 1 of 2 |
Rock name: | Weakly altered, aphanitic basalt |
Original Sample Dimensions: | 16x16x11 cm |
Comments: | Minor fractuing; fractures filled with white minerals (quartz + feldspar?). Patchy alteration. |