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Event details

Voyage: IN2020_V01       [details]
When: 2020-02-21 18:28:41 UTC
Log: Geology_Rocks_in2020_v01
Equipment: Not specified
Position: Latitude: -32.3876 Longitude: 101.7616 Position from underway logging
Sample number:IN2020_V01_D09_032
Dredge:D09
Sample Number Assigned:Yes
Sample photographed (include scale and sample number):yes, in IN2020_V01_D09_032
Number of photos:7
Sample sawn:Yes
Colour:grey-light | brown
Composition:mafic
Alteration:Mn crust | altered
Phenocryst abundance (%):0
Groundmass:altered | crystalline
Mn crust thickness (mm):8
Vesicle abundance:<10%
Vesicle Filling (%):100
Vesicle fill:Black mineral
Sample bagged:yes
Bucket number:6 of 6
Rock name:Weak to moderately altered fine-grained basalt
Original Sample Dimensions:37.5x34x23 cm
Comments:Partial sample kept. Small zone of concentrated vesicles (area ~5x2 cm), mica-alterated pseudomorphs after phenocrysts (~10% abundance, 2-4 mm size). Minor fracturing.
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