Special Report: Aircore drilling has mapped out the promising Narracoota-Ravelstone Formation contact at Bryah’s Fortnum East prospect over a strike of 4.7km.

Importantly, the copper anomalism – 21m at 288 parts per million – identified on the southernmost line highlights the potential of this zone to be analogous to the Wodger copper-gold deposit about 4km to the west.

Aircore drilling at Bryah Resources’ (ASX:BYH) Wongawar prospect, also in Western Australia’s Bryah Basin, has recorded shallow gold in multiple drill holes.

Meanwhile, shallow reverse circulation drilling at the Brumby Creek project – part of the Bryah Basin Manganese Joint Venture – has intersected high-grade manganese.

Top results of up to 5m at 33.6 per cent manganese from a depth of 8m within a broader 19m at 27.9 per cent manganese from just 1m are expected to support a maiden resource estimate in 2021.

The company has also completed a $1.3m placement – through the issue of more than 21.6 million shares priced at 6c each – to spend on copper-gold exploration at its Bryah Basin project.

Copper-gold exploration

Bryah drilled 12 aircore holes along four traverses of three holes each at the Fortnum East prospect, which is considered to be on the same regional antiform, in near-identical stratigraphy, as Auris Minerals’ (ASX:AUR)Wodger deposit.

bryah resources fortnum east
Fortnum East geology and drill hole location plan. Pic: Supplied

Wodger and Forrest have a combined inferred resource of 2.4 million tonnes grading 1.7 per cent copper and 0.44 grams per tonne (g/t) gold for a contained resource of 41,500t of copper and 34,300oz of gold.

Notably, mineralisation at Wodger is interpreted to be structurally controlled and associated with a highly foliated magnesium-rich mafic/ultramafic unit of the Narracoota Formation in contact with sediments of the Ravelstone Formation.

Bryah says its pleasing that its first pass drilling has confirmed the presence of the same Narracoota/Ravelstone contact on its ground and plans to carry out additional exploration testing this contact in 2021.

The company also plans to carry out further interpretation of the shallow gold mineralisation at the Wongawar prospect ahead of any consideration of further drilling.

Drilling at Wongawar had targeted an area identified in 2018 auger rock soil and rock chip sampling as being anomalous in gold and copper.

Manganese drilling

Over at the Brumby Creek project, initial results from the recent infill and step-out drilling to enable improved geological modelling ahead of estimating resources in 2021 has confirmed the tenure of manganese mineralisation and increased the geological understanding of the area.

It has also confirmed that the mineralised zone is open to the south at both the Brumby West and Area 74 prospects.

Results from drilling at the Horseshoe South manganese mine are expected in the coming weeks while diamond drilling is underway to collect manganese samples for density and beneficiation testwork.

Last month, Bryah received a conditional $5m all-cash offer from Primero Group and ACMI Group for its interest in the Bryah Basin Manganese JV.

It plans to accept that offer should JV partner OM Holdings (ASX:OMH) choose not to match it.


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.