Minerals Alert March 2008

  1. Australian Mineral Exploration Review for 2007
  2. Thomson geochemical survey report released
  3. One-Day Workshop - 2006 Mt Isa Deep Crustal Survey Project
  4. Geodynamic and Metallogenic Evolution of Proterozoic Australia from 1870 - 1550 Ma
  5. Update on geophysical data releases
  6. Useful Geoscience Australia Websites
  7. About Minerals Alert

1. Australian Mineral Exploration Review for 2007

Geoscience Australia has released a review of mineral exploration in Australia for the year 2007. The review examines levels and trends in exploration in a national and global context. It also highlights government initiatives to support exploration. Overall expenditure in 2006-07 rose by 38% to a record $1714.6 million. The total amount spent on the search for previously unknown mineralisation was relatively stable at 36% of total exploration spending compared to 37% in the previous year.

Exploration results were announced for a wide range of commodities from across the country including:

  • a major increase in resources in the Olympic Dam deposit, South Australia
  • announcement an initial 4 Moz resource in the Tropicana-Havana gold deposit, Western Australia
  • continuing successful exploration for mineral sands in the Eucla Basin in South Australia and Western Australia.

A copy of the printed edition of the Australian Mineral Exploration Review for 2007 can be downloaded from the Geoscience Australia website. In addition an extended edition of the Review is also available for downloading.

For more information please email, Mike Huleatt or phone on +61 (0)2 6249 9087.

2. Thomson geochemical survey report released

A report entitled Thomson Region Geochemical Survey, Northwestern New South Wales (CRC LEME OFR 145) by Patrice de Caritat and Megan E. Lech is now available for download.

The report describes the methods, results and preliminary interpretations from a pilot project applying low-density sampling of near-surface transported regolith in the NSW part of the Thomson orogen region. Sediment samples were collected at the outlet of 99 large catchments over the area, giving an average sampling density of 1 site/1561 km2. Bulk parameters and the concentrations of over 60 elements in <180 um and <75 um fractions were measured.

Geochemical maps and diagrams were constructed for all elements/sample types/size fractions. Preliminary interpretations suggest that proximity to known mineralisation is detected in many cases by elevated concentrations of, e.g., Cu, Pb or Sb. Recent drilling by industry has intersected sulfide accumulation in a catchment with elevated concentrations of these three elements in the outlet sediments studied in this pilot project. Several anomalous concentrations were also revealed in areas with no known mineralisation and/or where cover is thicker, particularly in the east of the study area. These may warrant further investigation.

For further information, email Patrice de Caritat or phone +61 (0) 2 6249 9378.

3. One-Day Workshop - 2006 Mt Isa Deep Crustal Survey Project

A one-day workshop on 24 June 2008 will be held in Mt Isa to release the results of the 2006 Mt Isa Deep Crustal Survey Project, a joint project between Geoscience Australia, the Geological Survey of Queensland, pmd*CRC and Zinifex Ltd.

For further information, email David Huston or phone +61 (0) 2 6249 9577.

4. Geodynamic and Metallogenic Evolution of Proterozoic Australia from 1870 - 1550 Ma

A Geoscience Australia Record (number 2007/16) entitled 'Geodynamic and Metallogenic Evolution of Proterozoic Australia from 1870 - 1550 Ma: a discussion' has been released. This record includes a review of geodynamic models for Proterozoic Australia and the evidence on which they are based, and a review of Australian Proterozoic metallogenic events. Possible geodynamic models are presented together with continental-scale predictions of likely associated mineral systems. The record was completed as part of Geoscience Australia's Proterozoic Synthesis Project.

For further information, email Geoff Fraser or phone +61 (0) 2 6249 9063.

5. Update on geophysical data releases

The current status of Geoscience Australia's geophysical survey data acquisition is available in a comprehensive table. Data has been released for Croydon and Cooper Basin via GADDS on 8 February 2008.

For further information, email Murray Richardson or phone +61 (0)2 6249 9229.

6. Useful Geoscience Australia Websites

Geoscience Australia's website has a large number of informative products which are available as a free download, including the Australian atlas of mineral resources, mines and processing centre.

7. About Minerals Alert

For more information contact Mike Huleatt on +61 2 6249 9087 or email mike.huleatt@ga.gov.au.

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

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