Gibraltar (Ag)

Stream and Terms:  87.5% attributable interest in Gibraltar until 5.9 Moz have been delivered, thereafter, the stream percentage reduces to 19.7% of Taseko’s attributable portion of silver production. Osisko is not required to make ongoing payments in consideration for the ounces it receives under the stream.
Operator: Visit Taseko Mines for more information
Primary Commodities: Copper-molybdenum, Silver
Location: British Columbia, Canada
Reserves and Resources:
  • Proven and probable reserve of 24.7 Moz Ag (640.3 Mt @ 1.20 g/t Ag)
  • Measured and indicated resources (exclusive of reserves) of 14.8 Moz Ag (461.7 Mt @ 1.00 g/t Ag)
  • Inferred resources of 2.3 Moz Ag (70.7 Mt @ 1.00 g/t Ag)
Attributable Production to Osisko:
  • 2020: 2,284 GEOs
  • 2021 : 2,676 GEOs
  • 2021 : 2,205 GEOs


  • Annual mill throughput is expected to exceed design capacity in 2023 due to the softer ore in the Gibraltar pit
  • 2023 quarterly production profile is expected to be less variable due to improving silver grade, quality and consistency as mining progresses deeper in the pit

More details in the 2023 Asset Handbook


Source: Company disclosure and Osisko management estimates.