Miramar’s first round of drilling at its Lang Well project has proven to be an unmitigated success, intersecting extensive shallow rare earth element mineralisation beneath two historical auger anomalies.

Assaying of core from the reconnaissance aircore drilling using aqua-regia digest returned results as high as 4m grading 930 parts per million (ppm) total rare earth oxides (TREO) and 8m at 765ppm TREO.

While these results are lower than the historical Toben Bore sample of 4m at 1,500ppm TREO, Miramar Resources (ASX:M2R) noted that aqua-regia digest may under-report the actual TREO results by as much as 30 to 40% and that it has resubmitted all samples reporting over 500ppm TREO for priority analysis using the more accurate Lithium Borate Fusion technique.

Adding further interest, while shallow REE mineralisation was intersected in several holes over a significant lateral extent, the area tested remains just a tiny part of the extensive auger anomalism identified at the project.

“Each of the historic auger anomalies stretches over several kilometres, with some of the best new aircore results at the southern end of the previously untested Boundary Bore target,” executive chairman Allan Kelly said.

“Given the very large spatial extent of the historic auger anomalism, there is potential for a significant amount of shallow REE mineralisation to be outlined at Lang Well.”

Testing auger anomalies

Historical drilling in 2010 at the Toben Bore target, which extends over a horizontal distance of about 400m, returned elevated lanthanum and cerium results in several holes.

Mineralisation at Boundary Bore – a coherent lanthanum-cerium anomaly in reconnaissance soil samples collected by the company in 2010 – is at least 200m wide and open to the south.

Reconnaissance aircore drilling tested beneath the two targets with a single line of 100m-spaced aircore holes drilled across each target using existing station tracks and fence lines.

Lang Well covers a large, complexly folded greenstone belt located between the Deflector and Golden Grove operations.

While originally explored for gold, Miramar decided to explore for rare earths after noting the large extent of the auger REE anomalism and strongly elevated lanthanum and cerium results.




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.