The Trans-Mexican Volcanic Belt (TMVB) has had a long mining history, as it is attested by the discoveries in 1524 and 1525 respectively of the well known world class deposits of Pachuca and El Oro-Tlalpuhajua. This mining region has a great diversity of ore deposit mineralization styles, being the low-sulphidation epithermal affinity the most prominent genre in this mineralized belt.

Published all-inclusive resources for 3.9 M oz Au and 411 M oz Ag have been defined to date on eleven mining properties, all of them by public mining companies.

Ixtaca of Almaden, has the biggest resource with almost 2 M oz Au and more than 114 M oz Ag at grades of 0.54 g/t Au and 30.9 g/t Ag. Other significant deposits are the Candente´s El Oro with more than 760K oz Au and 9.7 M oz Ag (historical resources non NI 43-101 compliant) at grades of 3.44 g/t Au and 44 g/t Ag, Monte El Favor with 316K oz Au and 84 M oz Ag at grades of 0.85g/t Au and 224.68 g/t Ag, and the Agnico Eagle´s El Rayo with 52K oz Au and 113 M oz Ag at grades of 1.52 g/t Au and 69.81 g/t Ag

The TMVB still has several potential areas with enough merits to be explored for mining companies in search of new discoveries.

The table below shows tonnage, grades, as well as gold and silver resources for each of these deposits.