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Event details
| Voyage: | IN2019_V04 [details] |
| When: | 2019-08-13 08:47:54 UTC |
| Log: | Geology_Rocks_in2019_v04 |
| Equipment: | Not specified |
| Position: | Latitude: -19.4199 Longitude: 155.2784 Position from underway logging |
| Sample number: | in2019_v04_D11_003 |
| Dredge: | D11 |
| Sample Number Assigned: | Yes |
| Sample photographed (include scale and sample number): | Yes |
| Number of photos: | 3 |
| Sample sawn: | Yes |
| Sticker: | yes |
| Colour: | black | grey-light | brown |
| Composition: | mafic |
| Phenocryst mineralogy: | feldspar |
| Phenocryst abundance (%): | 40 |
| Phenocryst size range (mm): | 0.5-5 |
| Features: | other |
| Vesicle abundance: | <10% |
| Vesicle Filling (%): | 20 |
| Vesicle fill: | clay |
| Alteration: | Fresh | Mn crust | altered |
| Sample bagged: | yes |
| Bucket number: | 21 |
| Rock name: | Fresh, Massive, Plag-Phyric Basalt |
| Requested: | UK | Monash |
| Comments: | 0.5-5 mm Mn crust. 4-5 unidentified phenocrysts-orange in colour, possibly iddingsite but surprisingly sparse-most are also found along veins which may contribute to them being particularly altered. Lots of plagioclase phenocrysts. Diagram on back of sheet. Approx 23 cm in length. |