Mt Walters
(E15/1000, E15/1001, E15/1002, E77/1458, E77/ 1670, E77/1671), Yilgarn Region, Western Australia
Location:
The Mount Walters Project is situated in central Yilgarn Region, Western Australia, approximately 15km east of Lake Seabrook and 100km west of Kalgoorlie.
Brief geological description:
The project area covers an approximately 60km-long section of palaeo-drainage system in the southwestern Yilgarn Region. This system is marked by a series of lakes (e.g. Lake Seabrook, Lakes Deborah East and West, Lake Baladjie) and lacustrine deposits.
The palaeochannel in the project area is covered either by slope deposits such as colluvium and sheetwash or by eolian sand or by lacustrine deposits. Bedrock exposure is limited to sporadic outcrops of Archaean granite and gneiss of the Yilgarn Region. The OZCHEM database of Geoscience Australia indicates that these granites and gneisses are highly enriched in uranium (up to 150 ppm U). Metamorphosed, Archaean mafic volcanic rocks of the Yilgarn Region crop out immediately adjacent to the project area.
Expected styles of mineralization:
The project area is prospective for sandstone-hosted uranium deposits.
Exploration model:
The project area covers part of a major palaeochannel (pathway for uranium transport by oxidised fluids) that drained an area with highly uranium-enriched granites and gneisses (sources of uranium). Field investigations are required to establish whether redox boundaries that would have promoted uranium mineralisation are present within the palaeochannel sediments.
