Bryah Resources Limited (ASX: BYH) has announced significant drilling results from the Brumby Creek project, part of its Bryah Basin Manganese Joint Venture project in central Western Australia. The company said that the results would support maiden mineral resource estimates in 2021.
BYH reported that high-grade (>30% Mn) manganese was intersected in shallow drilling at Brumby Creek Prospect. The drilling programs were fully funded by OM (Manganese) Limited.
Best results from holes completed in October 2020 included 19 metres (1-20m) @ 27.9% Mn including 2 metres @ 32.6% Mn from 2m, and 5 metres @ 33.3% Mn from 8m; 10 metres (15-25m) @ 26.8% Mn including 1 metre @ 30.9% Mn from 17m and 1 metre @ 30.3% Mn from 20m; 7 metres (10-17m) @ 27.0% Mn including 3 metres @ 30.6% Mn from 11m; and 11 metres (8-19m) @ 22.2% Mn including 1 metre @ 30.6% from 15m.
The company said that the drilling confirmed that mineralised zone is open to South at Brumby West and Area 74 prospects. BYH said that the results of drilling at Horseshoe South manganese mine are expected in the coming weeks.
Byrah Resources said that the diamond drilling is currently underway to collect manganese samples for density and beneficiation testwork, which will be key inputs into mineral resource estimates. The company said that the results of drilling will be used to update geological model ahead of mineral resource estimates in 2021.
Brumby Creek project
The Brumby Creek project is part of the Bryah Basin Manganese Joint Venture. In April 2019, Bryah had executed a Manganese Farm-In and Joint Venture Agreement with OMM, a wholly owned subsidiary of ASX-listed OM Holdings Limited. The Agreement applies to the rights to manganese only over approximately 660 km2 in the Bryah Basin.
The Brumby Creek project was first identified by field reconnaissance and sampling in 2018 and is an area of the manganiferous Horseshoe Formation characterised by zones of intermittent manganese outcrops, which had never been drilled by previous explorers.
Significant prospects within the Brumby Creek project includes Brumby East, Brumby West, and Area 74.
In November 2020, the Company announced that it has received a conditional $5.0 million offer for a 100% cash purchase of its JV interest in the Bryah Basin Manganese Joint Venture.
Drilling at Brumby Creek project
The JV partners had completed an infill and step-out drilling on the Brumby Creek Project to enable improved geological modelling ahead of the preparation of mineral resource estimates in accordance with JORC 2012.
BUH said that the RC drill program was initially focused on 2 prospects, Brumby East and Brumby West in 2019, however, drilling in 2020 confirmed a new zone of significant shallow manganese at Area 74. BYH said that a total of 43 holes for 1,256 metres was completed in this part of the program.
It may be noted that the relevant tenements (E52/3237 and M52/806) are 100% owned or beneficially held by Bryah Resources Limited. OM (Manganese) Limited holds a 30% joint venture interest in respect to the manganese rights only on this tenement.
The company said that the drill program at Brumby East was focused primarily as infill and extension drilling. 19 RC holes were drilled with 8 holes on the stratigraphic horizon (BRRC109 – BRRC116) and 11 holes (BRRC117-BRRC127) on the interpreted flat talus deposit.
The infill holes at Brumby West were planned to intersect manganese mineralisation adjacent to earlier drill holes. The holes were drilled to provide geological continuity along and across strike. BYH said that an extra line of holes was drilled as a step-out section to the south to test the manganese mineralisation for extensions under shallow cover. Manganese was intersected in every hole (BBRC141-143) leaving the south open for future resource extension.
Only one step-out line was drilled at the Area 74 prospect.
The company has now reported the first set of results from its recent reverse circulation (RC) drilling program at its Bryah Basin Manganese Joint Venture project.
BYH said that the latest results confirm the tenure of manganese mineralisation and provide an increased geological understanding of the area, as is required for mineral resource reporting. The company said that the Manganese grades and widths were in line with expectations.
The best intersections from Brumby East include BRRC113 – 12 metres (4-16m) @ 24.3% Mn; BRRC115 – 8 metres (17-25m) @ 22.2% Mn; BRRC122 – 7 metres (15-22m) @ 21.6% Mn; BRRC124 – 6 metres (14-20m) @ 24.5% Mn including 1 metre @ 30.5% Mn from 15m; and BRRC127 – 7 metres (10-17m) @ 27.0% Mn including 3 metres @ 30.6% Mn from 11m.
The best intersections from Brumby West include BBRC130 – 10 metres (15-25m) @ 26.8% Mn including 1 metre @ 30.9% Mn from 17m and 1 metre @ 30.3% Mn from 20m; BBRC133 – 11 metres (8-19m) @ 22.2% Mn including 1 metre @ 30.6% Mn from 15m; BBRC136 – 19 metres (1-20m) @ 27.9% Mn including 2 metres @ 32.6% Mn from 2m and including 5 metres @ 33.3% Mn from 8m; BBRC137 – 16 metres (8-24m) @ 21.3% Mn; BBRC138 -16 metres (5-21m) @ 22.8% Mn; BRRC140 -11 metres (9-20m) @ 22.9% Mn; and BBRC143 – 8 metres (9-17m) @ 23.9% Mn including 1 metre @ 30.8% Mn from 14m.
The best intersections from Area 74 include BBRC148 – 4 metres (15-19m) @ 21.3% Mn; and BBRC149 – 3 metres (8-11m) @ 27.8% Mn including 1 metre @ 33.3% Mn from 10m and 2 metres (13-15m) @ 27.7% Mn.
The company said that diamond drilling is underway on site. BYH said that six short PQ diameter holes will recover approximately 180 metres of core samples, which will be used for density and beneficiation testwork in the new year.
The company said that additional drilling was completed in other locations (Horseshoe South Mine) and assays are pending. BYH said that further drilling results from the Main pit and Extended pit area at the Horseshoe South Manganese Mine are expected in the coming weeks.