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Event details

Voyage: IN2020_V01       [details]
When: 2020-02-26 02:56:04 UTC
Log: Geology_Rocks_in2020_v01
Equipment: Not specified
Position: Latitude: -32.8059 Longitude: 97.6637 Position from underway logging
Sample number:IN2020_V01_D17_011
Dredge:D17
Sample Number Assigned:Yes
Sample photographed (include scale and sample number):yes, in IN2020_V01_D17_011
Number of photos:9
Sample sawn:Yes
Sticker:yes
Colour:grey-light | white | green
Composition:mafic
Alteration:Mn crust | altered
Phenocryst abundance (%):0
Groundmass:altered
Mn crust thickness (mm):0-3
Vesicle abundance:<10%
Vesicle Filling (%):100
Vesicle fill:Black and white minerals
Sample bagged:yes
Bucket number:2 of 2
Rock name:Strongly hydrothermally altered vesicular basalt
Original Sample Dimensions:10x19x11 cm
Comments:Strong hydrothermal alteration, pervasive feldspar(?)/quartz alteration concentrated along fractures. Some areas are more intesely altered to a pseuclastic texture. Vesicles (~5%) mostly concentrated in a single layer.
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