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Event details

Voyage: IN2020_V01       [details]
When: 2020-02-26 02:50:22 UTC
Log: Geology_Rocks_in2020_v01
Equipment: Not specified
Position: Latitude: -32.8126 Longitude: 97.6637 Position from underway logging
Sample number:IN2020_V01_D17_009
Dredge:D17
Sample Number Assigned:Yes
Sample photographed (include scale and sample number):yes, in IN2020_V01_D17_009
Number of photos:8
Sample sawn:Yes
Sticker:yes
Colour:grey-dark
Composition:mafic
Alteration:Mn crust | altered
Phenocryst abundance (%):0
Groundmass:microcrystaline | altered
Mn crust thickness (mm):<1
Vesicle abundance:10-30%
Vesicle Filling (%):80
Vesicle fill:clay and other minerals
Sample bagged:yes
Bucket number:2 of 2
Rock name:Weakly to moderately altered vesicular basalt
Original Sample Dimensions:25x11x11 cm
Comments:Weak to moderate alteration, apparent graded "layers" (fracture-controlled alteration/recrystallisation or flow-banding?); moderately fractured.
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