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Event details

Voyage: IN2018_V08       [details]
When: 2018-12-29 06:18:14 UTC
Log: Geology_Rocks_in2018_v08
Equipment: Not specified
Position: Latitude: -39.8112 Longitude: 157.2957 Position from underway logging
Sample number:IN2018_V08_D01_046
Dredge:01
Dredge Date:28/12/2018
Sample Number Assigned:Yes
Sample photographed (include scale and sample number):Yes
Sample sawn:Yes
Sawn sample photographed:Yes
Number of photos:3
Colour:brown
Composition:felsic
Grain size:pebble (2-64 mm)
Grain shape:angular
Sorting:moderate
Phenocryst mineralogy:amphibole
Phenocryst abundance (%):<1
Groundmass:altered
Vesicle abundance:low (<30%)
Sample bagged:yes
Sticker:yes
Bucket number:008
Rock name:Monomictic trachytic hyaloclastite
Comments:some clasts are volcanic non-vesicular and the groundmass is former glass
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