Minerals Alert March 2013

A monthly online newsletter with product news, data releases and projects relating to the minerals and energy exploration industry.

  1. Geo-Region of the Month – Arunta Region, Northern Territory
  2. Satellite ASTER Data and Mineral Spectroscopy for Mapping and Exploration workshop
  3. New 1:1 million scale Surface Geology of Australia
  4. Australian Mineral Exploration Review for 2012
  5. Australian Operating Mines Map 2012
  6. Update on geophysical data releases
  7. About Minerals Alert

1. Geo-Region of the Month – Arunta Region, Northern Territory

Each month Geoscience Australia will highlight a range of significant products relating to key Australian mineral provinces which have been released over the past 10 years and may be of interest to current explorers.

This month’s Geo-Region is the Arunta Region in the southern Northern Territory. The highlighted products, which are available as a free download, are:

  1. Geochronological Data. Geoscience Australia and the Northern Territory Geological Survey (NTGS) External site link cooperatively undertake U-Pb geochronological dating of samples from the Northern Territory under the National Geoscience Agreement. Geochronological analyses of zircon and monazite minerals from samples collected in NTGS field projects is undertaken using a Sensitive High Resolution Ion Microprobe (SHRIMP). A large number of geochronology reports on this work can be downloaded from the NTGS website External site link.
  2. Energy Mineral Systems. An assessment of the uranium and geothermal prospectivity of the southern Northern Territory. This report and associated maps document the uranium and geothermal energy potential of the southern Northern Territory using a geosystems approach to predict areas which are considered to have potential for four types of uranium mineral systems and two types of geothermal systems.
  3. Mafic-ultramafic Mineral Systems. Field investigations, geophysical interpretations, and mineral potential modelling of Proterozoic mafic-ultrafic intrusions in the Arunta region have been undertake to determine their potential for three different styles of orthomagmatic nickel-copper-cobalt and Platinum-Group Element (PGE) deposits.
  4. Deep Crustal Seismic Survey. L192 Georgina-Arunta Deep Crustal Seismic Survey, NT, 2009. Stacked and Migrated SEG-Y Seismic Data and Images for Line 09GA-GA1. This data package includes gravity data, processed seismic data (SEG-Y format), TIFF images and associated metadata for a deep crustal seismic line collected from the southern Davenport Province to the northern Amadeus Basin. The survey imaged the Georgina and Amadeus basins to enhance the knowledge of their petroleum prospectivity and investigated the uranium potential of the Arunta Inlier. Interpretations of the data is available via the Northern Territory Geological Survey publications and products External site link.
  5. Geophysical Modelling. Depth to magnetic basement of the Arunta-Georgina-Amadeus-Musgrave region. This map shows the burial depth of basement geology beneath younger flat-lying cover material and was constructed from drill hole, seismic and magnetic depth estimation methods. These estimation methods include forward modelling on profile data and estimates generated from an updated spectral method, which have improved depth estimation accuracy.

For further information, please email david.huston@ga.gov.au; or phone +61 2 6249 9577.

2. Satellite ASTER Data and Mineral Spectroscopy for Mapping and Exploration workshop

Geoscience Australia and CSIRO's Centre for 3D Mineral Mapping are holding a workshop on Satellite ASTER Data and Mineral Spectroscopy for Mapping and Exploration as part of the Northern Territory Geological Survey AGES conference External site link in Alice Springs. This workshop will provide background theory and applications on the use of mineral mapping technologies for the resources sector.  Hands-on exercises will include discussion of alteration and regolith spectral-mineral models and integration of the new Australian ASTER mineral maps with other datasets. The workshop will be held from 9.00 am to 5.00 pm on the 18 March in the Alice Springs Convention Centre. The cost for the workshop is $50 and registration can be made via AGES External site link.

For further information, please email matilda.thomas@ga.gov.au; or phone +61 2 6249 9216.

3. New 1:1 million scale Surface Geology of Australia

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A new 2012 edition of the national 1:1 million scale Surface Geology of Australia dataset is now available. The data is in ESRI geodatabase, shapefile and Mapinfo formats, and will be available as a web service shortly.

The 2012 edition data updates the previous 2010 data with new or revised mapping in the Northern Territory, northwest Queensland, and Western Australia. The new dataset also updates the stratigraphic and descriptive geological information from the 2010 edition, and has been restructured to be fully compliant with international geoscience data standards.

The geology data can be viewed, queried, and downloaded along with Geoscience Australia's 1:2.5 million scale geology data and topographic map data, through the MapConnect online mapping tool. The dataset can also be downloaded free or ordered on DVD from the Geoscience Australia Sales Centre.

For further information, please email oliver.raymond@ga.gov.au; or phone +61 2 6249 9575.

4. Australian Mineral Exploration Review for 2012

The Australian Mineral Exploration Review for 2012 provides an overview of results from Australia's mineral exploration during 2012. The report highlights exploration expenditure and results from selected drill intersections announced by individual exploration and mining companies. It also contains a selection of drill hole results and graphs of exploration expenditure trends for specific commodities as well as reference maps and exploration results for each deposit. The publication also presents summaries of Australian, State and Northern Territory government initiatives which assist the mineral exploration sector. The record is available as a free download.

For further information, please email anthony.senior@ga.gov.au; or phone +61 2 6249 9267.

5. Australian Operating Mines Map 2012

The recently released Australian operating mines map shows operating mines, developing mines and selected mineral deposits in Australia at 1:10 million scale. This map broadly illustrates the geographic distribution of the mines and deposits and the range of selected, largely grouped, commodities. This information is superimposed on a generalised surface geology map of Australia and an aeromagnetic image in grey scale. It is available as a free download.

For further information, please email anthony.senior@ga.gov.au; or phone +61 2 6249 9267.

6. Update on geophysical data releases

Geoscience Australia is managing the data acquisition programs in Western Australia and South Australia.

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

Minerals Alert Geophysical Surveys Table - survey boundary polygons in MapInfo TAB format.

To obtain further details on the survey acquisition, please email murray.richardson@ga.gov.au or phone +61 2 6249 9229.

7. About Minerals Alert

For more information, please email leesa.carson@ga.gov.au; or phone +61 2 6249 9872.

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

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