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A polygenetic manganese nodule from the Scott Plateau off northwest Australia

Created 17/10/2025

Updated 17/10/2025

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A large manganese nodule was dredged from 2100 m on the Scott Plateau by R.V. Valdivia in 1977. It is an irregular ellipsoid, with a maximum dimension of 28 cm, parallel to the sea floor. Chemical analyses show that Mn and Fe proportions are comparable, and total Ni + Cu + Co content averages 0.7 percent. The nodule has a complex growth history which started with radial upward growth leading to coalescing into a continuous crust. The crust was coated with horizontal layers. After fracturing and infilling of cracks with calcareous sediment, further layers encased the nodule.

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Additional Info

Field Value
Title A polygenetic manganese nodule from the Scott Plateau off northwest Australia
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/c4ba49bc-840a-40bf-bcb4-1182cf7c1a98
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        119.85,
        -12.95
      ],
      [
        119.9,
        -12.95
      ],
      [
        119.9,
        -12.9
      ],
      [
        119.85,
        -12.9
      ],
      [
        119.85,
        -12.95
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "A polygenetic manganese nodule from the Scott Plateau off northwest Australia". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/a-polygenetic-manganese-nodule-from-the-scott-plateau-off-northwest-australia