Sierra Madre Gold and Silver Ltd. operates as a precious metal development and exploration company in Mexico. The company explores for gold and silver deposits. Its flagship project includes the Guitarra silver-gold mine that consists of two underground operation centers and a flotation mill located near Toluca, Mexico; and the Tepic project, which comprises five mining concessions covering an area of 2,612.5 hectares situated in Nayarit, Mexico. The company is based in Vancouver, Canada.