An area covering the valley of the River Murray between Murray Bridge and Mannum, and also extending for a considerable distance eastwards into the Murray Mallee (across farmland on the counties of Younghusband, Burdett and Ettrick), has been explored for possible economic placer occurrences of heavy mineral (HM) sands that may have formed within the Late Tertiary Murray Basin shallow marine clastic sedimentary sequence (Loxton and Parilla sands). During the first stage of the exploration history reported on herein, licence operator/JV partner Australian Zircon NL drilled 14 exploratory aircore holes for a total penetration of 314 m along a single traverse in November 2007 [but the data is not included here - to obtain it, see Env 9514]. Drillholes were generally spaced 100 m apart, with some infill holes put in at 50 m spacing. They encountered primarily a fine to very fine grained, fossiliferous, weakly micaceous and downward-fining sand sequence overlain by calcrete and in places, probable Blanchetown Clay. No significant concentrations of heavy minerals were intersected. This work followed upon the conduct of initial desktop studies of HM prospectivity, and a review of previous explorers' drilling data. Drill targets were selected based on known earlier HM intercepts, and on structural/stratigraphic interpretations of aeromagnetic/radiometric data from a survey that had been flown in April 2001. After Murray Zircon began exploring the subject area in mid-2012, it drilled a total of 33 open vertical RC aircore holes for 840 m at variable, >100 m spacing along a single north-south traverse. Holes were sampled at 1-metre depth intervals, and were logged with a gamma ray tool at the cessation of drilling. A total of 131 drill cuttings samples, estimated from hand panning to contain HM of interest, were submitted for laboratory heavy mineral analysis. A zone of interest was identified in the northern part of the traverse, where three holes (MZX6215, 6217 and 6219) intersected a lens of anomalous HM mineralisation ~320 m wide and 4.5 m thick that averaged 0.83% HM in laboratory assaying. The lens lies at a base RL of ~56 m. The only other intersection of note along this traverse was made in hole MZX6256, which encountered a 5 m thick interval of very fine to fine silty sands lying on top of a granular sand base; this averaged 1.1% HM in laboratory assaying. Subsequent drilling of infill holes at 120 m spacing on either side of this particular hole showed no significant extension to this anomalous mineralisation. Murray Zircon now considers that the results of the drilling which it has conducted on EL 4867, along with the results of drilling previously conducted on EL 3381, when taken in the light of knowledge of recent drilling results obtained by Iluka Resources on its EL 5256 located nearby to the north-west, are sufficient to rule out the probable existence locally of any significant accumulations of HM. Consequently, a decision was made to fully surrender tenure.