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Geochemical Classification of Mafic to Ultramafic rocks in Australia GIS Dataset

Created 17/10/2025

Updated 17/10/2025

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Mafic and ultramafic analytical samples, derived from Geoscience Australia's corporate Oracle OZCHEM Whole Rock Geochemistry Database, are assigned an igneous rock classification, e.g., tholeiitic, alkaline, based on their lithological and unit descriptions and their analysed geochemical data. This first-pass classification was undertaken to provide an additional tool to assist with metallogenic interrogation of the data. The mafic and ultramafic analytical samples are also assigned, where possible, a geological event based on their relationship to the Australian Mafic-Ultramafic Magmatic Events GIS Dataset. The GeochemicalClassification table is designed to be used in conjunction with Geoscience Australia's Corporate Oracle OZCHEM Whole Rock Geochemistry Database (link) and the Australian Mafic-Ultramafic Magmatic Events GIS Dataset (http://dx.doi.org/10.4225/25/54125552CDA7C).

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Additional Info

Field Value
Title Geochemical Classification of Mafic to Ultramafic rocks in Australia GIS Dataset
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/4b3e808e-e390-4bcc-a6f7-2a91f9aff622
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        112.0,
        -44.0
      ],
      [
        154.0,
        -44.0
      ],
      [
        154.0,
        -9.0
      ],
      [
        112.0,
        -9.0
      ],
      [
        112.0,
        -44.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Geochemical Classification of Mafic to Ultramafic rocks in Australia GIS Dataset". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/geochemical-classification-of-mafic-to-ultramafic-rocks-in-australia-gis-dataset