Drilling has provided strong hints that the maiden resource estimate for Bryah’s Horseshoe manganese JV project in Western Australia will be a thing of beauty.

Of the 69 holes drilled at the Brumby West prospect in 2021 that Bryah Resources (ASX:BYH) has received assays results from, more than half (36 holes) returned intersections with over 15% manganese.

Notable results from the drilling, which has greatly extended the mineralisation envelope at Brumby West are:

  • 14m grading 26% manganese from a depth of 22m including 7m at 32.4% manganese from 22m (BRRC167);
  • 17m at 23.2% manganese from 13m including 1m at 31.2% manganese from 16m (BRRC170);
  • 10m at 29.4% manganese from 13m including 1m at 32.1% manganese from 13m, 2m at 31.3% manganese from 16m and 3m at 30.3% manganese from 20m (BRRC165); and
  • 12m at 27.5% manganese from 12m including 4m at 33.2% manganese from 18m (BRRC156).

This highly successful drill program had followed up on targets identified by the gradient array induced polarisation (GAIP) geophysical technique, indicating that there is potential for widespread application of this method in the Horseshoe manganese region.

Bryah adds that the ore sighter trial is now complete with promising results for manganese identification while three bulk samples have now undergone bulk sorting trials and are awaiting assays.

“These excellent results will strengthen the maiden mineral resource estimate for the project currently underway,” chief executive officer Ashley Jones said.

“As our JV partners OMH progress toward completing their 51% earn-in, we look forward to working with them to bring this historically important region back into manganese production as it was in 2011.”

New manganese prospect

Scout drilling about 11km from the granted mining licence at the historical Horseshoe South manganese mine has also intersected manganese mineralisation with a top hit of 7m grading 18%.

Half of the holes drilled at the new Redrum prospect returned results of more than 3m at 10% manganese.

This provides further evidence that the GAIP survey technique can reliably detect manganese mineralisation in the region.

Upcoming activity

Bryah and OMH are planning to have a busy 2022 as they seek to bring the area back into production.

Items on the work program ahead include finalising resource estimates on multiple manganese prospects; analysing specific gravity data, abrasion and crush index data; and examining the use of ore sorting technology along with other methods to identify lowest capital and operating cost processing pathway for the deposit.

The partners will also carry out further GAIP surveys and follow-up drilling before applying for mining licences over new areas along with lodging the mining plan and mine closure plan.




This article was developed in collaboration with Bryah 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.