Sierra Madre Gold and Silver Ltd., a mineral exploration company, engages in the acquisition, exploration, and development of natural resource properties in Canada and Mexico. It holds 100% interests in the Guitarra silver-gold mine comprising two underground operation centers and a flotation mill located near Toluca, Mexico, as well as an option interest in the Tepic silver-gold property comprising five mining concessions covering an area of 2,612.5 hectares located at Nayarit, Mexico. The company is based in Vancouver, Canada.