Altan Rio Minerals Limited is a mineral exploration and development company, which is engaged in the acquisition, exploration, and development of exploration and evaluation assets in Mongolia. The Company explores for gold and copper projects in Mongolia. The Company holds three projects in Mongolia covering approximately 255,148 acres, including a new discovery of gold and copper mineralization across an area in western Mongolia, and a Boroo-style orogenic lode gold target in northern Mongolia. The Company's projects include Chandman-Yol property, Khavchuu Project and Onon project. The Chandman-Yol property is located in eastern Khovd Aimag, western Mongolia, and consists of around nine tenements covering approximately 203,878 acres. The Khavchuu Project is an early-stage exploration project, which covers an area of approximately 17,590 acres. The Onon project is located in northeastern Mongolia in Khentii Aimag, and consists of three tenements covering approximately 33,680 acres.