Gunnison Copper Corp. engages in the acquisition, exploration, and development of copper mineral properties in the United States. The company also explores for zinc and silver deposits. Its flagship property is the Gunnison copper project consists of unpatented mining claims, private land, exploration permits, mineral leases, and direct ownership of mineral rights covering an area of approximately 10 square miles located in Cochise County, Arizona. The company also engages in the construction and operation of copper mines. The company was formerly known as Excelsior Mining Corp. and changed its name to Gunnison Copper Corp. in November 2024. Gunnison Copper Corp. was incorporated in 2005 and is headquartered in Phoenix, Arizona.