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Event details
Voyage: | IN2020_V01 [details] |
When: | 2020-02-21 14:29:22 UTC |
Log: | Geology_Rocks_in2020_v01 |
Equipment: | Not specified |
Position: | Latitude: -32.5097 Longitude: 101.483 Position from underway logging |
Sample number: | IN2020_V01_D15_002 |
Dredge: | D15 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | yes, in IN2020_V01_D15_002 |
Number of photos: | 5 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | grey-dark | grey-light | brown |
Composition: | mafic |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar |
Phenocryst abundance (%): | 40 |
Phenocryst size range (mm): | 2-5 |
Groundmass: | microcrystaline | altered |
Mn crust thickness (mm): | <1 |
Vesicle abundance: | 10-30% |
Vesicle Filling (%): | 100 |
Vesicle fill: | clay and zeolite |
Sample bagged: | yes |
Bucket number: | 2 of 2 |
Rock name: | Weakly altered vesicular plagioclase-phyric basalt |
Original Sample Dimensions: | 36x45x9 cm |
Comments: | plagioclase clots. zoning of vesicles. |