Minerals Alert April 2004

  1. Airborne Gravity Survey West Arnhem Land, NT
  2. Release of Australian National Gravity Database (March 2004 Edition)
  3. Australia's Identified Mineral Resources 2003
  4. Chief Government Geologists Committee
  5. Gawler Craton Conference and Workshop 2004
  6. About "Minerals Alert"

1. Airborne Gravity Survey West Arnhem Land, NT

Geoscience Australia and the Northern Territory Geological Survey announce the release of 4,500 line km of airborne gravity data acquired over an area in West Arnhem Land, NT. These data were acquired as part of a joint project between the two agencies and Cameco Australia Pty Ltd and Rio Tinto Exploration Pty Ltd. The survey was flown by Fugro Airborne Surveys Pty Ltd using Canadian Micro Gravity's GT1-A airborne gravimeter. Data were acquired at a line spacing of 2 km and constant barometric flying height of 600 m above mean sea level. This data release includes the terrain-corrected gravity values presented as Complete Bouger Anomaly values.

Survey results were presented at NTGS Annual Geoscience Exploration Seminar in Alice Springs on 23 March. The data may be downloaded free of charge from the Geophysical Archive Data Delivery System (GADDS). The survey data and images can also be downloaded free of charge from the Northern Territory Geological Survey website.

Alternatively, the West Arnhem Land airborne gravity data set is released on one CD-ROM, which also contains the March 2004 release of the entire Australian National Gravity Database. Geoscience Australia will supply the point located digital data and grids on CD-ROM at a cost of $99.00 (including GST), plus postage and packing. A copy of the CD-ROM containing the West Arnhem Land airborne gravity data set, the 2004 Australian National Gravity Database and the Gravity Grid of the Australian Region (2001) may be purchased from: The Geoscience Australia Sales Centre, telephone: +61 (0)2 6249 9966 facsimile: +61 (0)2 6249 9982 E-mail: sales@ga.gov.au

For further information please contact Mario Bacchin at Geoscience Australia on +61 (0)2 6249 9308 or by e-mail at Mario.Bacchin@ga.gov.au

2. Release of Australian National Gravity Database (March 2004 Edition)

Geoscience Australia announces the release of the 2004 edition of the Australian National Gravity Database. This release contains point data values in the area extending from 8° S to 48° S and 108° E to 162° E. All data are provided in GDA94 coordinates. The Australian National Gravity Database contains over 1,200,000 point gravity observations read over the Australian onshore and offshore regions. These data have been collected from gravity surveys dating back to 1937. It is a cooperative effort among Geoscience Australia, State and Territory Geological Surveys, private companies, universities and other organisations. The 2004 release includes both onshore and offshore data and has approximately 192,000 additional gravity stations compared to the 2003 release. The digital data will be supplied by Geoscience Australia on one CD-ROM at a cost of $99.00 (incl GST), plus postage and packing. The CD-ROM will include the ER Mapper gravity grid of the Australian Region, produced at a cell size of 0.5 minutes of arc (equivalent to approximately 800 metres), previously released in June 2001. Alternatively the database and grid may be downloaded free of charge from the Geoscience Australia website, or, by using the Geophysical Archive Data Delivery System (GADDS), clients may select data for a specific area of interest and download that data from the database.

For additional information contact Phillip Wynne on +61 (0)2 6249 9463 or by email at: Phill.Wynne@ga.gov.au

3. Australia's Identified Mineral Resources 2003

Geoscience Australia has released its 2003 national assessment of known mineral resources. Australia's Identified Mineral Resources 2003 (AIMR 2003) reports on the status of all major and a number of minor commodities and examines trends in resource stocks. While Australia's position as a country with some of the world's largest Economic Demonstrated Resources (EDR) remains strong, the assessment signals the need for ongoing successful exploration for gold and base metals. Following a review of the availability/accessibility of commodities for development, accessible EDR are reported for the first time. This category takes into account factors that prevent development of mineral resources. Analysis of ABS and other data on mineral exploration, including the cost of access to land in Australia and distribution of expenditure in other countries, provides a comprehensive overview and outlook for the exploration sector, which overall remains difficult but the best for the past five years.

For more information contact Bill McKay 0n +61 (0)2 6249 9003 or by email at Bill.Mckay@ga.gov.au

4. Chief Government Geologists Committee

The heads of Australian Geological Surveys will be holding the annual Chief Government Geologists Committee meeting in Alice Springs from 19 to 20 April 2004. Major agenda items include: forward work programs especially collaborative programs under the National Geoscience Agreement, geoscience information standards and delivery, promotion of exploration investment, industry issues and research collaboration.

For more information contact Chris Pigram on +61 (0)2 6249 9397 or by email at Chris.Pigram@ga.gov.au

5. Gawler Craton Conference and Workshop 2004

The Gawler Craton: State of Play 2004 conference, and Gawler Seismic Workshop, will be held at the AMF Conference Centre, Adelaide, on Wednesday 4th to Friday 6th August 2004. The two-day conference will present new results from government, university and industry investigations on the Olympic Cu-Au province, Central Gawler gold province, Harris Greenstone Domain, and other areas of interest to minerals explorers in the Gawler Craton. On the third day, 250 line kilometres of new seismic data will be released at the Gawler Seismic Workshop, followed by presentations on the seismic method and interpretation of the transect past the Olympic Dam Cu-U-Au deposit.

See subsequent Mineral Alerts for program and registration details. For further information contact Roger Skirrow on +61 (0)2 6249 9442 or by e-mail at roger.skirrow@ga.gov.au

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