Minerals Alert April 2013

A monthly online newsletter with product news, data releases and projects relating to the minerals and energy exploration industry.

  1. Geo-Region of the Month – Tanami Region, northwest central Australia
  2. Workshop on new seismic and MT datasets from the Yilgarn Craton to the Musgrave Province, Western Australia
  3. Update on geophysical data releases
  4. About Minerals Alert

1. Geo-Region of the Month – Tanami Region, northwest central Australia

Each month Geoscience Australia will highlight a range of significant products relating to key Australian mineral provinces which have been released over the past 10 years and may be of interest to current explorers.

The Tanami region in northwest central Australia is one of the richest gold–bearing Proterozoic regions in Australia. Significant gold mineralisation is located in the Tanami, Dead Bullock Soak, and The Granites goldfields. The Callie gold mine, currently the largest deposit, was discovered in 1991 and has production and resources totalling more than 10 million ounces with a predicted mine life extending beyond 2020. The products listed below are principally the results of the North Australia Project which was a bilateral program under the auspices of the National Geoscience Agreement between Geoscience Australia, the Northern Territory Geological Survey (NTGS) External site link and the Geological Survey of Western Australia (GSWA) External site link. This project documented the age, fluid characteristics, structural and geochemical controls, and ore genesis of lode gold mineral system(s) in the Tanami region. The highlighted products, which are available as free downloads, are listed below.

  1. Evolution and metallogenesis of the North Australian Craton. This public conference (Evolution and metallogenesis of the North Australian Craton ) provided an overview of the geodynamics and mineral systems of the southern part of the North Australian Craton, including the Tanami region.
  2. 3D model of the Tanami region. A 3D architectural model of the Tanami region showing the geometry of major faults, stratigraphic units and granites, using forward modelling and inversion of potential field data.  
  3. Tanami deep seismic reflection and magnetotelluric lines. A deep seismic reflection survey carried out in collaboration with GSWA, NTGS, Newmont Australia and Tanami Gold, images the geometry of major structures, granites and the depth of the Moho in the Tanami region.  
  4. Tanami data package. The Tanami region GIS dataset provides an archive of geospatially-located and other digital geological and geophysical data covering the Tanami region and north Arunta region in the Northern Territory and Western Australia. It includes themes for a number of 1:250 000 scale and 1:100 000 scale geological map sheets, mineral deposit and prospect locations, geophysical images, company drill hole and rock chip locations, company and Geoscience Australia geochemistry, and interpretations and syntheses derived from the data.
  5. Supporting geological datasets. The results of geochronological investigations, ore mineralogy, as well as structural and chemical controls on mineralisation, can be found in a series of papers which constitute a special issue of Mineralium Deposita on 'The Tanami Gold Province External site link' (2007, v. 42, pp. 1-204) as well as in individual papers by Goleby et al. (2009, Tectonophysics, v. 472, pp. 169-182 External site link), Cross et al. (Annual Geoscience Exploration Seminar (AGES) Record of Abstracts, Northern Territory Geological Survey Record 2005-001 External site link), Fraser et al. (2012, Australian Journal of Earth Sciences, v. 59, pp. 399-409 External site link) and Lambeck et al. (2008, Precambrian Research, v. 166, pp. 185-203 External site link; 2010, Mineralium Deposita, v. 45, pp. 497-515 External site link; 2012, Australian Journal of Earth Sciences, v. 59, pp. 383-397 External site link)

For further information, please email andrew.cross@ga.gov.au; or phone +61 2 6249 5854.

2. Workshop on new seismic and MT datasets from the Yilgarn Craton to the Musgrave Province, Western Australia

There will be a full day workshop on Wednesday, 19 June 2013 in Perth to present the results of new seismic reflection and magnetotelluric data collected for the 2011 Yilgarn-Officer-Musgrave (YOM) seismic survey in Western Australia. This survey extends along the Great Central Road from the junction with the David Carnegie Road within the northeastern Yilgarn Craton, across the western Officer Basin to Warakurna in the Musgrave Province. The survey and workshop are a collaborative project involving Geoscience Australia and the Geological Survey of Western Australia External site link.

Registration details will be available soon.

For further information, please email narelle.neumann@ga.gov.au; or phone +61 2 6249 9429.

3. Update on geophysical data releases

Geoscience Australia is managing the geophysical data acquisition programs in Western Australia and South Australia.

The current status of Geoscience Australia's geophysical survey data acquisition is available in a comprehensive table.

Minerals Alert Geophysical Surveys Table - survey boundary polygons in MapInfo TAB format.

To obtain further details on the survey acquisition, please email murray.richardson@ga.gov.au or phone +61 2 6249 9229.

4. About Minerals Alert

For more information, please email leesa.carson@ga.gov.au; or phone +61 2 6249 9872.

To read past editions of Geoscience Australia's Minerals Alert, visit the Minerals Alert Newsletter Archive.

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Topic contact: media@ga.gov.au Last updated: October 4, 2013