Minerals Alert September 2004

  1. Geoscience Australia Minerals Division Annual Seminar
  2. Gawler Craton Deep Seismic Profiles in the Olympic Dam Region
  3. A New Thematic Map, Public Lands of Australia
  4. Gawler Craton State of Play 2004
  5. Gravity Base Station Descriptions Now Available Via the Web
  6. National Scale Geoscience Spatial Datasets Available Online
  7. FreeGs Thermodynamic Calculator Added to Virtual Centre for Geofluids and Thermodynamic Data
  8. About "Minerals Alert"

1. Geoscience Australia Minerals Division Annual Seminar

The 2004 Geoscience Australia Minerals Exploration Seminar will be held in Perth on November 29. Themes in the program will be the regional geology and prospectivity of the Yilgarn, Tanami and Gawler; mineral systems, resources and potential particularly for gold and nickel and topics on exploring under cover. Full details of the program and registration details will be available in the next Minerals Alert.

To receive further information as it becomes available please contact Mike Huleatt by phone on +61 (0)2 6249 9087, by fax on +61 (0)2 6249 9983 or by email at Mike.Huleatt@ga.gov.au

2. Gawler Craton Deep Seismic Profiles in the Olympic Dam Region

Geoscience Australia has released the data from two deep seismic profiles in the Olympic Dam region of the Gawler Craton. One line, approximately 200 km long was oriented approximately north-south. The other line, approximately 50 km long, was oriented east-west.

For information on the interpretation undertaken to date please contact Patrick Lyons by phone on +61 (0)2 6249 9763 or by email at patrick.lyons@ga.gov.au

3. A New Thematic Map, Public Lands of Australia

The various types of public land across Australia are shown at a scale of 1:5 million on a new interim, thematic map, Public Lands of Australia, produced by Geoscience Australia. This map has been produced in response to requests from the public, government and industry to update the popular Land Tenure map (1993). Public land provides for: the management of public resources such as forests and minerals; environmental protection of nature conservation reserves and water supply catchments; land for defence activities, and reservations for special purposes such as communications, energy, transport and education. Indigenous land is now largely private property and will form the basis of a new map to be produced at a later time

For further information on this map, download a copy.

4. Gawler Craton State of Play 2004

Talks presented at Gawler Craton: State of Play 2004 are available on the GA website. They will be cross-linked, so if you go to one site you can link to the talks posted on the other. Some talks by industry people will not be available. To view the available presentations go to http://www.ga.gov.au/cedda/publications/760.

The 2nd edition VRML of the Gawler Craton 3D Crustal Model: Olympic Cu-Au Province is live on the Geoscience Australia website. It is at https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&catno=41696

5. Gravity Base Station Descriptions Now Available Via the Web

Station location descriptions of the 945 gravity base stations that make up the Australian Fundamental Gravity Network can now be accessed on the Geoscience Australia website at http://www.ga.gov.au/afgn/

Each station description consists of one or more diagrams with, in many cases, up to two photographs showing the station and its surroundings. The gravity value, latitude, longitude and elevation of the station are also displayed.

For more information or to provide feedback on the gravity base stations, contact Ray Tracey by phone on +61 (0)2 6249 9279 or by email on Ray.Tracey@ga.gov.au

6. National Scale Geoscience Spatial Datasets Available Online

Geoscience Australia provides national scale spatial datasets encompassing all facets of geoscience information. These datasets cover continental Australia and, where appropriate, Australia's outlying territories including the Australian Antarctic Territory out to our marine jurisdictional boundaries. New national scale geoscience datasets, maps and images are compiled and existing datasets are upgraded.

View these data in the National Datasets Online GIS or download them for free from the Geoscience Australia Free Download System.

7. FreeGs Thermodynamic Calculator Added to Virtual Centre for Geofluids and Thermodynamic Data

The FreeGs calculator, supplementing the FreeGs thermodynamic database for geochemical modelling, has been released on the GA web site .

This on-line software provides the capability to calculate a number of thermodynamic properties required for modelling geochemical (including mineralisation) processes occurring over a wide range of temperatures and pressures. The FreeGs calculates the apparent Gibbs free energy for individual chemical species, fugacity and fugacity coefficients for gases and water, and density and dielectric constant for pure water. It can also calculate logK, pK and the Gibbs free energy change for chemical reactions. All these parameters can be used in a geochemical modelling package of choice. The temperature-pressure range for calculations is readily configured by the user who can also create and store a number of custom chemical reactions compiled from the individual species held in the FreeGs database. Further details can be found at the FreeGs Help page.

The FreeGs project is a part of the pmd*CRC program. See the About FreeGs page.

For more information contact Evgeniy Bastrakov by phone on +61 (0)2 6249 9293 or by email at Evgeniy.Bastrakov@ga.gov.au

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