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Copperstone

High-quality ore is located underground.

High-quality ore is located underground.

The Copperstone gold mine is located in  western Arizona within the Walker Lane mineral belt, where it intersects gold provinces in Southern California and Western Arizona.

Core samples are processed for ore content.

Core samples are processed for ore content.

G.old flecks indicate high-grade ore.

G.old flecks indicate high-grade ore.

From 1987 to 1993, Cyprus Minerals operated an open-pit mine at Copperstone that produced 500,000 ounces of gold from the Copperstone fault, shown in this core sample.

From 1987 to 1993, Cyprus Minerals operated an open-pit mine at Copperstone that produced 500,000 ounces of gold from the Copperstone fault, shown in this core sample.

The Copperstone gold mine is located in  western Arizona within the Walker Lane mineral belt, where it intersects gold provinces in Southern California and Western Arizona. These provinces contain over 40 million ounces of gold.

The Copperstone gold mine is located in  western Arizona within the Walker Lane mineral belt, where it intersects gold provinces in Southern California and Western Arizona.