Red Mountain Mining’s 1,200m RC drilling program at the Mt Mansbridge project in WA is off to a good start, with heavy rare earth elements (HREE) discovered in four holes.

A shortened drill program due to the onset of the Kimberley wet season, hasn’t stopped the company cracking open xenotime (dysprosium) mineral within sample drill chips.

There’s also a pulse-raising 6m mineralized heavy rare earth zone (49-55m) intersected in hole MMRC002 at the Solo prospect and finally drilling has intersected altered peridotite at Déjà vu – prospective for cobalt mineralization.

Red Mountain Mining (ASX:RMX) is already prepped for drilling once the site is accessible again in early 2022.

Solo prospect samples prioritised for assay

The prospect is a +200m NW-SE trending zone of HREE mineralisation initially identified by BHP (ASX:BHP) during uranium exploration in the 1980’s.

Three RC holes for 451m were completed at the prospect during the drilling program, with a 6m zone (49-55m) of xenotime mineralisation identified.

Visual estimations of the xenotime mineralisation ranged from between 1-10% of the total composition of minerals over the 6m zone.

On-site analysis using a portable XRF confirmed the zone as anomalous in both yttrium and ysprosium, and the zone has been prioritized for assay at the laboratory for immediate analysis.

Red Mountain Mining
Rare earth element and nickel-copper-cobalt-PGE prospects at the Mt Mansbridge project

Déjà vu prospective for cobalt

Previous sporadic sampling and assaying at the Déjà vu prospect returned several encouraging cobalt assay results between 70-100m including 0.34%, 0.32% and 0.22% cobalt.

Litho-geochemical studies recently undertaken by geochemical and geological consultants highlighted the cobalt as primary magmatic related (i.e. not weathering enrichment) while the anomalous cobalt values can’t be down to just silicate minerals within the peridotite.

Hole MMRC004 has been drilled to a depth of 75m, with the hole designed to provide further geological information and a comprehensive set of samples around the existing cobalt anomaly.

Samples have been prioritized at the lab for immediate assay, with further deeper drilling and an additional hole to the north and south planned for early 2022.




This article was developed in collaboration with Red Mountain Mining Limited, 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.