The Sierrita mine is located on a combination of lands. The mine is located in the Sierrita Mountains. In the area, groundwater is approximately 300' below the surface. Demetrie Wash. Both flow southeast into the Santa Cruz River. The mine setting is in a transitional zone from Arizona Upland Desertscrub to Semidesert Grassland.
Native vegetation includes velvet mesquite, desert hackberry, desert broom, and blue paloverde.
Wildlife that can be found in the area include desert mule deer, coyote, javelina, desert cottontail, pocket mice, and several species of birds and reptiles. Recreational activities consist of dove and quail hunting, hiking, and rock collecting. Current open pit mining and leaching activities are planned to continue until 2019. Mining plans call for the Sierrita and Esperanza pits to be mined together, forming one large 1,500 acre pit at the time of mine closure. The Ocotillo pit will be filled with waste rock and will become an extension of the current T Dump.