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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-31 11:59:09 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -22.9458 Longitude: 159.7904 Position from underway logging |
Sample number: | in2019_v04_D53-006 |
Dredge: | D91 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | y |
Number of photos: | 3 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black | red | brown |
Composition: | mafic |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar | olivine[iddingsite] |
Phenocryst abundance (%): | 40 |
Phenocryst size range (mm): | 2-10 |
Groundmass: | microcrystaline |
Features: | other |
Vesicle abundance: | <10% |
Vesicle Filling (%): | 10 |
Vesicle fill: | Calcite and clay |
Sample bagged: | yes |
Bucket number: | 91 |
Rock name: | Altered iddingsite-physic basalt |
Comments: | 30 mm Mn crust. Massive Feature. Plagioclase laths in groundmass. Very large iddingsite? Phenocrysts. Now altered to clay. |