Phase II reverse circulation drilling has started at Red Mountain’s flagship Mt Mansbridge heavy rare earths and nickel-cobalt-PGE project in Western Australia’s Kimberley region.

Drilling has started at the Cow Creek prospect targeting nickel-cobalt-platinum group elements in a region which has been interpreted as a mafic-ultramafic intrusive complex similar to that which hosts Panoramic Resources’ Sally Malay/Savannah deposit in the East Kimberley.

Red Mountain Mining (ASX:RMX) expects the entire program, which seeks to test the Solo, Déjà Vu and Cow Creek prospects, to take about two weeks to complete.

Big potential

Cow Creek is a 7km long untested distinct geophysical anomaly, concealed below relatively thin conductive cover, that is on the same structure as the Déjà Vu intrusion.

Déjà Vu is located on the northern exploration licence E80/5229 and was acquired due to the near surface magnetic basement features that were identified from airborne geophysical surveys.

It is a prospective layered mafic-ultramafic intrusion coincident with major regional structure and with geological similarities to Sally Malay.

Historical drilling identified prospective geology, nickel-copper sulphides and anomalous nickel-cobalt.

A single 100m RC hole drilled into the centre of the magnetic anomaly identified by CRA between 1991-1993 encountered altered peridotite – an ultramafic intrusive – with disseminated nickel and copper sulphides.

Layering within the intrusive system indicates a multiphase complex with similarities to Sally Malay while sporadic assaying over 30m returned results of up to 0.34% cobalt and 0.129% nickel.

Solo is a structurally controlled 200m long zone of outcropping REE mineralisation within the Proterozoic aged prospective Killi-Killi Formation.


This article was developed in collaboration with Red Mountain, a Stockhead advertiser at the time of publishing.

This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.