AuRico Gold is an intermediate gold mining and exploration company that, until August 2011 operated only in Mexico. It reached intermediate gold producer status in August 2011 when Northgate Minerals agreed to be taken over for C$1.46 billion. Gammon Gold was an exploration company until 2004 when it started producing for the first time. Assets also include silver and copper.

The company began as Golden Rock Explorations, Inc. on February 23, 1986 (date of incorporation). In 1998, it renamed Gammon Lake Resources, Inc. Over the next 13 years, it changed names two more times, first to Gammon Gold Inc on June 18, 2007 then to AuRico Gold in May 2011.

On August 9, 2006, AuRico finalized the $451 million takeover of Mexgold Resources Inc., which owned the Guadalupe y Calvo gold and silver project in Mexico.

In April 2011, the company acquired Capital Gold for $408 million after 67% of Capital Gold's shareholders voted in favor of the deal. Assets included El Chanate and the Orion gold project in Mexico.

On May 16, 2011, it changed its name to AuRico Gold, the new name is a combination of Au ('Gold') and Rico (meaning 'rich' in Spanish).

On August 29, 2011, it acquired Vancouver-based Northgate Minerals in a C$1.46 billion deal (US$1.49 billion). The new company (62% owned by AuRico shareholders with the other 38% residing with Northgate's shareholders) will have 83% more gold resources than AuRico had beforehand; Including the takeover of Capital Gold, AuRico increased gold reserves by about 70% in less than five months.

There are two operations in Mexico and one operation in Canada in addition to several advanced development properties in Mexico and British Columbia.

Home to two producing properties.

In 2002, the company announced strategic alliance with Bolnisi Gold NL, to take its Ocampo Project in Mexico into production.