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Eastern Creek volcanics as the source of Copper at the Mammoth Mine, northwest Queensland

Created 17/10/2025

Updated 17/10/2025

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At the Mammoth mine, epigenetic copper mineralisation occurs within the Myally Subgroup of the Haslingden Group, an arenaceous sequence that both includes and overlies basic volcanics. A basic flow in the Myally Subgroup is altered, being enriched in potassium and copper for up to 200 m from the mineralisation. However, underlying metabasalts of the Eastern Creek Volcanics up to 600 m from the mineralisation are depleted in iron and copper and enriched in potassium relative to those further away. Evidence is presented that the Mammoth ore represents copper leached from the Eastern Creek Volcanics and transported along the Mammoth-Mammoth Extended Fault system. This hypothesis is similar to one previously proposed for the copper mineralisation at Mount Isa, although there are differences in the age and lithology of the host rocks in the two areas. Thus, rocks adjacent to major faults transgressing the Eastern Creek Volcanics must be considered prospective for copper mineralisation.

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Field Value
Title Eastern Creek volcanics as the source of Copper at the Mammoth Mine, northwest Queensland
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/9aaea877-a477-452c-a996-47014db584c8
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        138.0,
        -22.5
      ],
      [
        141.0,
        -22.5
      ],
      [
        141.0,
        -18.0
      ],
      [
        138.0,
        -18.0
      ],
      [
        138.0,
        -22.5
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Eastern Creek volcanics as the source of Copper at the Mammoth Mine, northwest Queensland". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/eastern-creek-volcanics-as-the-source-of-copper-at-the-mammoth-mine-northwest-queensland