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National ASTER Map Ferric oxide content

Created 16/10/2025

Updated 16/10/2025

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Band ratio: B4/B3 Blue is low abundance, Red is high abundance (1) Exposed iron ore (hematite-goethite). Use in combination with the "Opaques index" to help separate/map dark (a) surface lags (e.g. maghemite gravels) which can be misidentified in visible and false colour imagery; and (b) magnetite in BIF and/or bedded iron ore; and (3) Acid conditions: combine with FeOH Group content to help map jarosite which will have high values in both products. Mapping hematite versus goethite mapping is NOT easily achieved as ASTER's spectral bands were not designed to capture diagnostic iron oxide spectral behaviour. However, some information on visible colour relating in part to differences in hematite and/or goethite content can be obtained using a ratio of B2/B1 especially when this is masked using a B4/B3 to locate those pixels with sufficient iro oxide content.

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Additional Info

Field Value
Title National ASTER Map Ferric oxide content
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/94bfd63c-32db-4278-bf32-ecda27e4f443
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 11/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        111.5,
        -44.5
      ],
      [
        155.0,
        -44.5
      ],
      [
        155.0,
        -9.0
      ],
      [
        111.5,
        -9.0
      ],
      [
        111.5,
        -44.5
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "National ASTER Map Ferric oxide content". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/national-aster-map-ferric-oxide-content