Project overview


ECR’s 100%-owned Australian subsidiary Mercator Gold Australia Pty Ltd ("MGA") has been granted four exploration licences in the north-eastern Yilgarn region of Western Australia.


The licences form part of the Windidda project, which is now considered to be potentially prospective for komatiite hosted Ni-Cu-PGE as well as orogenic gold.

MGA has commissioned a consultant to complete additional geophysical modelling and review of historical activity reports for areas to the south of Windidda in order to better understand the potential prospectivity of the project.

The Windidda Project

The Windidda project area is underlain by Proterozoic age sediments of the Earaheedy Basin. The basin rocks unconformably overlie Archaean rocks of the northern margin of the Yilgarn craton.

Archaean greenstones host many of Western Australia and the world’s most prolific gold deposits, and the Windidda applications cover a significant proportion of an identified gravity-magnetic trend with known gold prospects along trend in outcropping greenstone to the south (outside the application areas).  

Previous exploration within the Windidda project area has targeted base metal and manganese deposits within the cover sequences. Gravity and magnetic anomalies interpreted to be hosted in greenstone units beneath the cover have not been targeted.

Recent preliminary research into the geological setting of the project suggests that the southern parts are potentially prospective for komatiite hosted nickel-copper-PGE (platinum group element) mineralisation. Approximately 12km from the southernmost exploration licence application at Windidda, Rox Resources Ltd has estimated a JORC (2012) Inferred Mineral Resource of 573,000t at 1.63% nickel, 1.19% copper, 0.082% cobalt, 1.49 g/t palladium and 0.85 g/t platinum for the Olympia deposit within Rox’s Collurabbie project.

In late 2018, MGA applied for a total of nine exploration licences to comprise the Windidda project, of which four have now been granted. The remaining five licence applications are subject to objections to the expedited grant procedure from native title parties. MGA is considering its options in this regard, and may decide to rationalise the Windidda tenement package in light of the native title objections and the findings of ongoing technical work.