Miramar Resources Limited (ASX:M2R) has discovered shallow rare earth element (REE) mineralization at the company’s wholly-owned Lang Well Project in the Murchison region of Western Australia.
Reconnaissance aircore drilling beneath two historical auger anomalies has intersected shallow REE mineralization in several holes over a significant lateral extent.
Executive Chairman, Allan Kelly, said the drilling confirmed the existence of REE mineralization at Lang Well and had tested a tiny portion of the extensive auger anomalism at the Project.
“Each of the historic auger anomalies stretches over several kilometres, with some of the best new Air Core results at the southern end of the previously untested Boundary Bore target,” he said.
“Given the very large spatial extent of the historic auger anomalism, there is potential for a significant amount of shallow REE mineralization to be outlined at Lang Well,” he added.
The initial reconnaissance Air Core programme tested beneath historic samarium and gold auger anomalies at the Toben Bore and Boundary Bore targets with a single line of 100m-spaced Air Core holes drilled across each target utilizing existing station tracks and fence lines.
At Toben Bore, the REE mineralization extends over a horizontal distance of approximately 400m whilst, at Boundary Bore, the REE mineralization is at least 200m wide and open to the south.
Results as high as 4.0m @930ppm TREO and 8.0m @765ppm TREO have been obtained from this initial programme however it should be noted that the samples were assayed using an aqua-regia digest which under-reports the total REE content when compared with a stronger four-acid digest or Lithium Borate fusion.
When compared with the historical sample from Toben Bore, which returned 4.0m @1500ppm TREO, it appears the aqua-regia digest may under-report the actual TREO results by as much as 30 to 40%.
All samples reporting over 500ppm TREO have therefore been resubmitted for priority analysis using the Lithium Borate Fusion technique.
Significant aqua-regia results from the initial aircore programme include:
• LWAC002 – 4m @930ppm TREO from 20m (incl. 145ppm Nd2O3)
• LWAC011 – 4m @671ppm TREO from 24m
• LWAC013 – 12m @533ppm TREO from 16m
• LWAC015 – 4m @697ppm TREO from 24m
• LWAC016 – 4m @830ppm TREO from 16m
• LWAC017 – 8m @765ppm TREO from 8m
• LWAC022 – 4m @646ppm TREO from 12m
Follow-up Air Core drilling has been planned to further test the extensive historic auger anomalism, including on the adjacent tenement application once granted.
For further information please visit: https://www.miramarresources.com.au/
