The heavy mineral sand potential of an area located immediately south-east of Ceduna has been assessed by planning traverses of shallow (20-50 m deep) aircore drillholes across fossil Tertiary marine marginal strandlines likely to contain reworked...
The heavy mineral sand potential of an area located immediately south-east of Ceduna has been assessed by planning traverses of shallow (20-50 m deep) aircore drillholes across fossil Tertiary marine marginal strandlines likely to contain reworked dunal sands carrying zircon-rich detrital mineral concentrations. Nearby recent discoveries by Iluka Resources of several significant zircon-rich heavy mineral sand resources (Jacinth, Ambrosia, Tripitaka and Gulliver) had been found to lie along the Eucla Basin Eocene fossil shoreline, generally adjacent to ancient headland beach settings. The Gulliver deposit is located only 15 km east of the subject EL 3760. It is interpreted that significant thicknesses of prospective Upper Tertiary Ooldea Sand occur beneath Quaternary cover in the Ceduna area. Local Precambrian basement highs may have played an important role in Tertiary shoreline sand deposition and reworking at the edge of the basin where paleochannels delivered clastic sediment. Initially Red Metal performed a review of available digital elevation data to define likely fossil shoreline and headland sandy sediment depositional settings. No field work ensued during licence Years 2 to 4. After consideration of the mineralisation potential it was decided not to continue with the exploration programme and to pursue priorities in other areas.
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