B2Gold’s new Goose gold zone: production, design rate and mine-life notes for engineers
Reviewed by Joe Ashwell
First reported on MINING.com
30 Second Briefing
B2Gold has defined a new high-grade Tattuk zone at the Goose mine in Nunavut, with drillhole 26GSE750Z2 cutting 9.95 m at 10.94 g/t gold from ~1,196 m depth, 150 m down-plunge of existing Nuvuyak mineralisation, alongside infill hits of 21.23 m at 19.12 g/t at Llama and 6.9 m at 11.88 g/t at Nuvuyak. Following an April crusher fire, a new mobile plant commissioned in August is averaging >3,000 t/d, while a repaired fixed circuit with new ROM bin, apron feeder, larger jaw crusher and rock breaker is targeted to sustain 3,200 t/d from October. B2Gold is holding 2026 Goose guidance at 170,000–200,000 oz, budgeting $51 million for Back River exploration and planning stage-two upgrades to reach the 4,000 t/d design rate and extend the current ~nine-year reserve-based mine life.
Technical Brief
- Stage one fixed-plant repairs cost about US$11 million, adding new ROM bin, apron feeder, larger jaw crusher and rock breaker.
- Additional mobile crushing plant and associated equipment cost roughly US$16 million to install and commission.
- Goose is located in Nunavut’s remote Kitikmeot region, about 1,400 km west of Iqaluit, constraining logistics and construction windows.
- April fire in the crushing circuit forced temporary reliance on mobile crushing, materially reducing Q2 mill throughput and output.
- Goose produced 12,890 oz in Q2 2026, below analyst expectations due to constrained crushing capacity.
- B2Gold plans concurrent operation of mobile and fixed crushers through October, and during winter if weather allows, to pre-build crushed-ore stockpiles.
- A further planned shutdown in 2027 is scheduled for stage-two fixed-plant upgrades to reach the 4,000 t/d design rate.
- Back River district covers about 975 km² with 10–15 near-mine priority targets and ~3.5 Moz at ~8 g/t in inferred resources, underpinning longer-term expansion potential.
Our Take
The Goose mine work in Nunavut coincides with the territory’s 1 April 2027 devolution timeline from Ottawa to Iqaluit, flagged in our July 2026 coverage, which is likely to change how B2Gold navigates land, water and tenure approvals for the wider 975 sq.-km Back River gold district.
Our earlier July 2026 piece on the Goose crusher fire and temporary switch to mobile crushing means the C$16 million mobile plant spend and C$11 million fixed-plant stage-one capex here are not just growth capex but also part of a de-risking path back to a more stable processing flowsheet.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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