Minerals Alert March 2007

  1. Australian Mineral Exploration Review for 2006
  2. New "Surface Geology of Northern Territory - 1:1 million scale" digital dataset released
  3. ANSIR - the National Research Facility for Earth Sounding
  4. Upcoming Mount Isa field workshop
  5. Onshore Energy Security Program
  6. Tanami-North Australia project wraps up
  7. Update on geophysical survey data acquisition
  8. About Minerals Alert

1. Australian Mineral Exploration Review for 2006

Geoscience Australia has released a review of mineral exploration in Australia for the year 2006. 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 2005-06 rose by 20.6% to a record $1 240.7 million. 37% of the total amount was spent on the search for previously unknown mineralisation. Exploration results were announced for a wide range of commodities from across the country including:

  • Mineral sands (Gullivers, South Australia, and Cooljarloo North, Western Australia)
  • Nickel (Saxon, Tasmania)
  • Gold-copper (Tekapo, Northern Territory)
  • Gold (Tandarra, Victoria, and Tropicana, Western Australia)
  • Base metals (Cuttaburra, New South Wales)
  • Copper (Rocklands, Queensland)

A copy of the Australian Mineral Exploration Review for 2006 can be downloaded from the Geoscience Australia web site.

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

2. New "Surface Geology of Northern Territory - 1:1 million scale" digital dataset released

The next instalment of the 1:1 million digital geology of Australia is now available as a free download on the Geoscience Australia website. The Surface Geology of the Northern Territory is available as shapefiles and ESRI export files for use in most common GIS applications. The new digital data has been compiled in collaboration with the Northern Territory Geological Survey and provides the most detailed and comprehensive seamless geological map of the whole territory for explorers, resource managers and land use decision-makers.

For further information, please email Ollie Raymond, or phone +61 (0)2 6249 9575.

3. ANSIR - the National Research Facility for Earth Sounding

ANSIR, the National Research Facility for Earth Sounding (operated jointly by Geoscience Australia and The Australian National University), is seeking comments on its recently released Discussion Paper "National Planning for a Geotransect Program". ANSIR is particularly interested in comments from industry and academia.

For further information, please email Bruce Goleby or phone +61 (0)2 6249 9404.

4. Upcoming Mount Isa field workshop

Geoscience Australia, in conjunction with the Geological Survey of Queensland, is running a one-week field workshop in the Mount Isa-Cloncurry region from June 23-30. The emphasis is on sequence stratigraphy, basin architecture, and east-west stratigraphic correlations, and how these elements can be integrated with structure, magmatism and geochronology to derive a geodynamic framework for mineralisation in this key mineral province. This is an opportunity to visit key outcrops and geological sections in both the western and eastern successions, and, through a series of workshop discussions and practical hands-on exercises, come to understand how field observations combined with theoretical considerations can be used to derive a predictive model for mineralisation in the Mount Isa region. Cost is provisionally estimated at $850 and includes workshop materials, accommodation, meals and transport, if required. Workshop venues include Gunpowder Mine, Mount Isa and Cloncurry.

For further details and an outline of the workshop contents please email George Gibson or phone +61 (0)2 6249 9727 or phone Laurie Hutton on +61(0)7 3362 9347.

5. Onshore Energy Security Program

A "first pass" program detailing work to be done, where, and in what order, is close to completion. The initial scope will be modified through several iterations in consultation with industry stakeholders. A draft plan for the program includes about 7 000 line kilometres of new seismic data, around 190 000 kilometres of airborne EM data and 140 000 kilometres of new gamma-ray spectrometric (radiometric) data.

For further information, please visit AusGeo News.

6. Tanami-North Australia project wraps up

A six year collaborative study has produced major changes in our understanding of the geological make-up and mineral potential of the North Australia Craton. A major focus of the project was the collection of new geochronological data which will serve as a cornerstone for future synthesis studies and provide a basis for developing exploration models. Another major focus has been the refinement of geology, geochronology, geochemistry and controls on lode-gold mineralisation in the Tanami region.

For further information, please visit AusGeo News or the North Australia project page.

7. Update on geophysical survey data acquisition

The status of current surveys is:

Location State Survey % Complete Gravity Stations Flight Lines Spacing Ground Clearance Comments
Musgrave Extension WA Airborne magnetic & radiometric 100% N/A northern area north-south; southern area east-west 400 m 60 m Completed 10 October. Data were released on 13 February 2007 via GADDS .
Ashburton WA Airborne magnetic & radiometric 100% N/A north-south 400 m 60 m Completed 27 December 2006. Preliminary data were supplied to GA in February 2007 for assessment.
Southern Officer Basin WA Airborne magnetic & radiometric 100% N/A north-south 400 m 60 m Completed 18 January 2007. Preliminary data were supplied to GA in February 2007 for assessment.
Murchison WA Gravity 1.5% 3600 new east-west over an area of 22 000 km2 2.5 km N/A Survey commenced on 10 February 2007.
Isa South-West Qld Airborne magnetic & radiometric 100% N/A east-west 400 m 80 m Data from this survey were released via GADDS on 13 February 2007.
Isa South-East Qld Airborne magnetic & radiometric 100% N/A east-west 400 m 80 m Preliminary data were supplied to GA on 24 January 2007.
East Isa North Qld Magnetic & Radiometric N/A N/A east-west 400 m 80 m Data acquisition is expected to commence 11 March 2007. Survey covers parts of Richmond, Hughenden, McKinlay, Manuka and Tangorin 1:250 000
East Isa South Qld Magnetic & Radiometric 15% N/A east-west 400 m 80 m The survey covers parts of the McKinlay, Manuka, Mackunda, Winton, Brighton Downs and Maneroo 1:250 000 map sheets, with data acquisition expected to commence at the end of flying on the Isa South-East airborne survey. When complete, the survey will have collected approx 145 900 line kilometres of new data.
Mount Isa C1 - Duchess and Urandangi Qld Gravity 100% ~9 236 with C2 (below) N/A 2.0 km grid N/A N/A
Mount Isa C2 - Glenormiston and Mount Whelan Qld Gravity 100% ~9 236 with C1 (above) N/A 4.0 km grid N/A N/A
Isa Area D Qld Gravity 75 460 4 903 N/A 4.0 km grid N/A Data acquisition will commence on completion of Isa Area E. The survey covers the entire Bedourie, Machattie, Birdsville and Betoota 1:250 000 Map Sheets and parts of the Connemara 1:250 000 Map Sheet.
Isa Area E Qld Gravity N/A 6 233 N/A 4.0 km grid N/A Data acquisition commenced on 1 February 2007. The survey will cover the entire McKinlay, Mackunda, Brighton Downs, Richmond and Manuka 1:250 000 Map Sheets and parts of the Winton and Maneroo 1:250 000 Map Sheet
Croydon Qld Airborne & Radiometric N/A N/A east-west 400 m 80 m Data acquisition expected to commence in May 2007. The survey covers parts of the Burketown, Normanton, Donors Hill, Croydon and Millungera 1:250 000 Map Sheets. When complete, the survey will have collected approx 100 000 line kilometres of new data.
Tiwi Islands NT Airborne magnetic & radiometric 100% N/A north-south 400 m 80 m Data from this survey were released via GADDS on 13 February 2007. New data will be acquired on east-west flight lines spaced 400 metres apart with a ground clearance of 80 metres. The survey covers parts of the Bathurst Island, Melville Island and Darwin 1:250 000 Map Sheets.
Tanumbirini N/A Airborne magnetic & radiometric N/A (145 251 line km) N/A east-west 400 m 80 m Data acquisition is expected to commence in May 2007. The survey covers parts of the Tanumbirini and Hodgson Downs 1: 000 Map Sheets.
North-East Tasmania Tas Airborne magnetic & radiometric N/A N/A east-west 200 m 90 m Data acquisition is expected to commence in early March 2007, and will cover approx 51 280 line km of magnetic and radiometric data. Survey covers Tasmanian land mass over part of the following standard 1:100 000 map sheets - Ninth Island, Cape Portland, Swan Island, St Patricks, Forester, Georges Bay, St Pauls and Break O'Day
Flinders Island Tas Airborne magnetic & radiometric 72% N/A east-west 200 m 90 m Data acquisition is expected to be completed by early March 2007. The survey covers the Flinders, Cape Baren and Clarke Islands land masses.
Australia-wide N/A Airborne Geophysical tie-line N/A (145 000 line km) N/A north-south 75 km 80 m Data acquisition is expected to commence in the first week of March 2007. The north-south lines will be equally spaced at 75km across each 1:250 000 standard map sheet. East-west tie lines will be located at the boundary of each 1:1000 000. The Australia-Wide Airborne Geophysical Tie-line Survey (AWAGS 2) has the objective of providing a common datum for all of the airborne radiometric and magnetic data in Australia.

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

8. 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