Alamo Dorado

Alamo Dorado, Pan American Silver's first open-pit mine, is located in northern Mexico in the state of Sonora, approximately 200 miles from the state capital of Hermosillo. The mine is 40 kilometres south-east of the town of Alamos and is accessed primarily via a dirt road upgraded by Minera Corner Bay, the operator of the mine.

The Alamo Dorado project is located in the Sierra Madre Occidental Range, a late Cretaceous to Tertiary age volcanic province that extends for hundreds of kilometres through northwestern Mexico. The host rocks at the Alamo Dorado mine consist of a sequence of ductile deformed, steeply dipping, Mesozoic epiclastic marine rocks that contain minor intercalated siliceous exhalite and pillow basalt.