C3 Metals expands Khaleesi copper to 67.6 m at 0.51% CuEq, Peru

Toronto, Ontario--(Newsfile Corp. - June 24, 2026) - C3 Metals Inc. (TSXV: CCCM) (OTCQB: CUAUF) ("C3 Metals" or the "Company") is pleased to announce results from 10 new holes drilled at its 100%-owned Khaleesi copper project ("Khaleesi" or "the Project") in southern Peru. Drilling has significantly expanded both skarn and intrusive copper mineralization. Two new skarns and manto-style copper mineralization has been discovered 400 metres ("m") and 1,000m southwest of the initial skarn intersected the first hole drilled at Khaleesi (KHZ5800-001), which reported 269.0m at 0.30% copper (see press release dated December 15, 2026).

Khaleesi Drill Hole Highlights A new garnet-magnetite skarn: Hole KHZ5450-001 was drilled approximately 400m southwest of the main garnet-magnetite skarn body. It intersected a new mineralized skarn with 67.6m at 0.45% copper, 0.029 g/t gold, 1.51 g/t silver, 17 ppm molybdenum (0.51% CuEq) from approximately 90m vertical depth (112.9m downhole depth). New manto-style copper mineralization: Hole KHZ5140-001 was drilled approximately 1,000m southwest of the main garnet-magnetite skarn body.

It intersected a 4.2m wide manto-style zone assaying 2.97% copper, 0.015 g/t gold, 4.92 g/t silver, 2 ppm molybdenum (3.16% CuEq) from approximately 275m vertical depth and 329.7m downhole depth (Figure 3). A second discovery of new garnet-magnetite skarn: Hole KHZ5140-004 was drilled to the southwest of KHZ5140-001 (see above bullet point) and approximately 1,000m southwest of the main garnet-magnetite skarn body. It intersected significant copper mineralization in garnet and magnetite skarns with 60.9m at 0.50% copper, 0.027 g/t gold, 2.21 g/t silver, 10 ppm molybdenum (0.55% CuEq) from approximately 40m vertical depth (44.0m downhole depth).

Skarn and intrusive co