Miramar’s foray into rare earths exploration has resulted in the identification of several large targets within its Lang Well project in WA’s Murchison region.

The company had previously taken rock chip samples in the northern part of the project after identifying a substantial number of pegmatite occurrences which had not previously been analysed for lithium or REEs.

More recently, it identified the potential for multiple additional outcropping and/or buried pegmatites as well as shallow, clay-hosted mineralisation.

Previous explorers had identified several large auger anomalies in 2009 though samarium was the only REE analysed while limited aircore drilling in 2010 returned highly anomalous lanthanum and cerium results in several holes.

Miramar Resources’ (ASX:M2R) re-analysis of the anomalous interval in hole BADAC33 for a full REE suite returned a result of 4m grading 1,500 parts per million (ppm) total rare earth oxides (TREO) with a high proportion of light rare earth oxides.

There is no drilling north or south of this single line for over 5km and the drilling did not effectively test the multiple large auger samarium anomalies.

Adding to this, a review of regional radiometric data including the potassium channel (K) has identified multiple linear anomalies which crosscut both the regional geology and topography.

Most of these linear K anomalies, which are interpreted to represent thin pegmatite dykes, have not been previously sampled or drilled.

“The regional radiometric data suggests the potential presence of multiple rare-element pegmatites which are commonly found in gneissic terrains, such as Lang Well, whilst the historic aircore result and the auger REE anomalism is suggestive of shallow clay-hosted REE mineralisation,” executive chairman Allan Kelly said.

“We will shortly complete a systematic geochemical sampling campaign focussing on the areas with overlapping radiometric anomalies and REE anomalism in the southeastern part of the project, including in the areas covered by the new application.”

Work ahead

With an approved Program of Work enabling aircore drilling in this area already in place, the company plans to carry out drilling pending the results of its geochemical sampling.

It has also applied for a new Exploration Licence, E59/2718, to cover the full extent of the auger samarium anomalies.




This article was developed in collaboration with Miramar Resources, 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.