A large gold deposit with estimated reserves of more than 100 tons has been discovered in north China's Inner Mongolia autonomous region, the local land and resource authority announced on March 18.

The deposit, which covers an area of 20 square kilometers, is located in the Araxan Left Banner, according to the banner (county) land and resource bureau.

The deposit could be exploited for 30 years with an annual exploitation capacity of 3 tons, according to the bureau.

Araxan region, which borders Mongolia, has more than 80 types of mineral reserves.