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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-23 05:36:38 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -10.3852 Longitude: 156.86 Position from underway logging |
Sample number: | in2019_v04_D35-037 |
Dredge: | D35 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 3 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black | grey-dark | grey-light | brown |
Composition: | mafic |
Alteration: | altered |
Phenocryst mineralogy: | pyroxene |
Phenocryst abundance (%): | 30 |
Phenocryst size range (mm): | 2-5mm |
Groundmass: | glassy | microcrystaline |
Vesicle abundance: | absent |
Sample bagged: | yes |
Bucket number: | 58 |
Rock name: | Altered feldspar-pyroxene-phyric dolerite |
Comments: | Mn crust thickness 2-5mm. Px and fsp bnoth altered. |