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Continental-scale geochemical surveys and mineral prospectivity: comparison of a trivariate and a multivariate approach

Created 19/11/2025

Updated 19/11/2025

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The National Geochemical Survey of Australia (NGSA) provides an internally consistent, state-of-the-art, continental-scale geochemical dataset that can be used to assess areas of Australia more elevated in commodity metals and/or pathfinder elements than others. But do regions elevated in such elements correspond to known mineralized provinces, and what is the best method for detecting and thus potentially predicting those? Here, using base metal associations as an example, I compare a trivariate rank-based index and a multivariate-based Principal Component Analysis method. The analysis suggests that the simpler rank-based index better discriminates catchments endowed with known base metal mineralization from barren ones and could be used as a first-pass prospectivity tool. Citation: Patrice de Caritat, Continental-scale geochemical surveys and mineral prospectivity: Comparison of a trivariate and a multivariate approach, Journal of Geochemical Exploration, Volume 188, 2018, Pages 87-94, ISSN 0375-6742, https://doi.org/10.1016/j.gexplo.2018.01.014

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Field Value
Title Continental-scale geochemical surveys and mineral prospectivity: comparison of a trivariate and a multivariate approach
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/6d3c8715-7bb7-41a1-bcb5-c60a8a257374
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 28/04/2017
Geospatial Coverage
Map data © OpenStreetMap contributors
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      ],
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      ],
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      ],
      [
        112.92,
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      ],
      [
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      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Continental-scale geochemical surveys and mineral prospectivity: comparison of a trivariate and a multivariate approach". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/continental-scale-geochemical-surveys-and-mineral-prospectivity-comparison-of-a-trivariate-and-1