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Event details
Voyage: | IN2019_V04 [details] |
When: | 2019-08-21 02:41:51 UTC |
Log: | Geology_Rocks_in2019_v04 |
Equipment: | Not specified |
Position: | Latitude: -12.6494 Longitude: 153.6422 Position from underway logging |
Sample number: | in2019_v04_D32_033 |
Dredge: | D32 |
Sample Number Assigned: | Yes |
Sample photographed (include scale and sample number): | Yes |
Number of photos: | 5 |
Sample sawn: | Yes |
Sticker: | yes |
Colour: | black | grey-dark | white |
Composition: | intermediate |
Alteration: | Mn crust | altered |
Phenocryst mineralogy: | feldspar | olivine[iddingsite] |
Phenocryst abundance (%): | 30 |
Phenocryst size range (mm): | <1mm |
Groundmass: | microcrystaline | altered |
Vesicle abundance: | <10% |
Vesicle Filling (%): | 30 |
Vesicle fill: | quartz |
Sample bagged: | yes |
Bucket number: | 46 |
Rock name: | Altered diorite ? |
Comments: | 10mm of Mn crust, Olivine shaped phenocryst are very altered, feldspar is altered, pyroxene might be represented by small crystals |