Home > Anglo Australian Resources NL > Articles > Victoria Downs Project NT
Anglo Australian Resources NL

Victoria Downs Project NT

Jul 20, 2012

Anglo Australian Resources NL 100%

 

Anglo Australian Resources NL is targeting sedex style base metal deposits (Zn – Pb) in the Victoria River Basin. The Victoria-Birrindudu Basin has strong affinities to the Macarthur and Nicholson Basins which host the giant Macarthur River and Century sedex style Zinc deposits. The project, located 200 km east of Kununurra (WA) and 250 km southwest of Katherine (NT), covers a sequence of Proterozoic sediments dominated by dolomitic carbonates and other fine grained sediments. The sequence is generally flat lying with an overall very shallow dip to the North East. A number of stratigraphic horizons have been identified as having potential to host sedex deposits. The project area also contains a number of galena occurrences. Lead isotope dating of these occurrences indicates the Victoria-Birrindudu Basin rocks are the same age as all the Proterozoic basins which host Australia’s largest base metal resources.

 

Previous exploration in the area located large areas of anomalous Lead and Zinc stream sediment geochemistry. Values of up to 9000ppm Pb, 740ppm Zn and 500ppm Cu have been recorded. Anglo Australian Resources completed a reconnaissance program in 2007 and 2008 on the granted tenements consisting of geological prospecting, stream sediment, rock chip and reconnaissance soil sampling. Stream sediment sampling confirmed previous lead anomalism with assays up to 5700ppm Pb and 130ppm Zn associated with the Skull Creek Formation and the Bynoe Formation within the Bullita Group. Highly anomalous levels of lead (up to 3300ppm Pb) and zinc (up to 1100ppm Zn) were returned from rock chips of dolomitic sediments. Anomalous levels (up to 500ppm) of lead were also returned from wide-spaced reconnaissance soil traverses. The values and the extent of anomalism (up to 12 x 3km in dimension) are encouraging, as the deposit models guiding the exploration suggest lead anomalism may be the surface expression of an alteration halo of a base metal mineralised system at depth.

 

Reinterpretation of data from a Geotem survey flown in 1998 by BHP has highlighted a number of anomalies that require ground follow up. Imaging of Geotem data and gravity and magnetic data sets has also enabled identification of major structural lineaments, a key component of the ore deposit models being followed. So far 30 target areas have been identified for further exploration. Five with coincident base metal anomalism supported by geophysical features are considered priority litho-structural targets.

 

Major regional structures transecting the basin have been recognized and interpreted to be growth structures that could have been feeder structures to base metal rich fluids. A proposed gravity survey, planned to commence in August 2009, is designed to target a major north south fault and associated splay faults and domes over a strike length of 50km which is associated with extensive base metal anomalous stream sediment geochemistry. It is anticipated that the survey will better define basement structure as well as providing sufficient detail to target specific gravity anomalies (reflecting high density sulphide deposit) for closer spaced gravity measurements and eventually target drilling. The gravity survey will be co-funded by the Northern Territory Government under it's Geophysics and Drilling Collaboration program.

 

The company is continuing exploration on the project but is seeking a joint venture partner to accelerate advancement of the project.

Magazine
No information