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Event details
Voyage: | IN2020_V01 [details] |
When: | 2020-03-01 15:12:22 UTC |
Log: | Geology_Rocks_in2020_v01 |
Equipment: | Not specified |
Position: | Latitude: -33.6411 Longitude: 101.5018 Position from underway logging |
Sample number: | IN2020_V01_D19_008 |
Dredge: | D19 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | yes, in IN2020_V01_D19_008 |
Number of photos: | 4 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | grey-light | brown |
Composition: | mafic |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar |
Phenocryst abundance (%): | <5 |
Phenocryst size range (mm): | 1-3 |
Groundmass: | microcrystaline | altered |
Mn crust thickness (mm): | <1 |
Vesicle abundance: | 10-30% |
Vesicle Filling (%): | 95 |
Vesicle fill: | White mineral |
Sample bagged: | yes |
Bucket number: | 1 of 1 |
Rock name: | Moderately altered, vesicular, plagioclase-phyric basalt |
Original Sample Dimensions: | 36.5x24x13 cm |
Comments: | Partial sample kept. Minor plagioclase microphernocrysts and clots. Minor fracturing. |