Copperwood (Cu, Ag)

Royalty and Terms: 1.5% NSR royalty on copper production and an 11.5% NSR royalty on silver production. At Osisko’s election, the silver royalty percentage may be increased to 100%.
Operator:  Visit Highland Copper for more information
Commodities: Copper, Silver
Location: Michigan, USA
Reserves and Resources:
  • Proven and probable reserves of 371 kt Cu (25.7 Mt @ 1.45% Cu), 3.2 Moz Ag (25.7 Mt @ 3.91 g/t Ag)
  • Measured and indicated resources (exclusive of reserves) of 453 kt Cu (28.5 Mt @ 1.59% Cu), 3.1 Moz Ag (28.5 Mt @ 3.38 g/t Ag)
  • Inferred resources of 860 kt Cu (79.1 Mt @ 1.09% Cu), 9.0 Moz Ag (79.1 Mt @ 3.54 g/t Ag)
Production:
  • 29 kt Cu (LOM Avg.)
  • 107 koz Ag (LOM Avg.)

More details in the 2025 Asset Handbook

 

 
Copperwood, page 45
Source: Company disclosure and Osisko management estimates.