Minerals Alert February 2010

  1. Science at the Surveys Seminar 22 March 2010
  2. Workshop on new seismic and MT datasets in South Australia
  3. Uranium ore-forming systems of the Lake Frome region, South Australia: regional spatial controls and exploration criteria
  4. National Geochemical Survey of Australia update
  5. Update on geophysical data releases
  6. About Minerals Alert

1. Science at the Surveys Seminar 22 March 2010

Geoscience Australia and the State Geological Surveys are presenting a one day seminar in Melbourne on Monday 22 March 2010, titled Science at the Surveys. The program will consider the exploration opportunities identified by, and arising from the results of pre-competitive geoscience programs undertaken by these agencies. Topics include 3D regional geological models and maps, 3D mapping of mineral systems, iron-oxide copper-gold-uranium systems, uranium systems and gold mineral systems. Attendance is free, but registration in advance is required. To register and obtain the full program details see the Science at the Surveys flyer [PDF 1.3MB].

For more information, email mike.huleatt@ga.gov.au; or phone +61 2 6249 9087.

2. Workshop on new seismic and MT datasets in South Australia

There will be a one-day workshop on Thursday 6 May 2010 in Adelaide to present the results of new seismic reflection and refraction and magnetotelluric data collected during 2008 and 2009 in South Australia in conjunction with the Department of Primary Industries and Resources, South Australia. The seismic lines presented include the Curnamona, Gawler-Curnamona link, Arrowie and Eyre Peninsula transects. Details about the workshop and registration will be available shortly.

For further information contact russell.korsch@ga.gov.au; or phone +61 2 6249 9495.

3. Uranium ore-forming systems of the Lake Frome region, South Australia: regional spatial controls and exploration criteria

This Geoscience Australia Record, Uranium ore-forming systems of the Lake Frome region, presents new data and a review of geological knowledge of uranium mineral systems in the region of the Beverley, Four Mile and Honeymoon sandstone-hosted uranium deposits in northeastern South Australia. The report, which is a product of the Onshore Energy Security Program, is intended to provide a revised framework for exploration for major uranium deposits elsewhere in the region.

Using a re-formulation of the mineral systems approach, Chapters 2 to 5 address uranium sources, 3D architecture and permeability, uranium depositional gradients and chemical architecture, and geological descriptions of uranium deposits in the region. The first published description of the detailed mineralogy of the Four Mile East deposit is presented in Chapter 6. Numerical modelling of paleo-fluid flow and mineralising processes is applied in Chapter 7 to test the viability of previously published genetic models. The final chapter synthesises the results and presents alternative ore-forming scenarios along with implications for mineral exploration in the region.

For further information, email roger.skirrow@ga.gov.au; or phone +61 2 6249 9442.

4. National Geochemical Survey of Australia update

The National Geochemical Survey of Australia (NGSA), which will result in production the first geochemical atlas of Australia based on the multi-element analysis of transported regolith samples collected at the outlet of around 1400 large catchments, has been completed in Tasmania, Victoria, New South Wales, Queensland and the Northern Territory and further collection in South Australia and Western Australia has been suspended.

Overall, 86% of the targeted samples were collected nationally and although sampling in South Australia and Western Australia is suspended for the current project, if sufficient samples can be collected over the next 1-2 years they may be considered for a second data release in the future.

Seventy-five per cent of the total samples collected have been analysed and the last batch is being sent to laboratories for analysis. A preliminary soil pH map of Australia, based on data collected in the field, is being prepared for release later in 2010. For more information and a detailed map of sampling sites visit the NGSA project page.

For further information, email patrice.decaritat@ga.gov.au; or phone +61 2 6249 9429.

5. Update on geophysical data releases

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

Cape York, Corish-Helena (East Canning 2) and Central Canning Airborne magnetic and radiometric surveys and the Cape York and Barkly Gravity surveys have all been released via Geophysical Archive Data Delivery System (GADDS).

For further information, email murray.richardson@ga.gov.au; or phone +61 2 6249 9229.

6. 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