LONDON, Jan 26 (Reuters) - Mongolia has asked Rio Tinto (RIO.L)(RIO.AX), its partner in the huge Oyu Tolgoi copper and gold mine in the Gobi desert, not to further increase its estimated $7.06 billion budget for the project's expansion, its mining minister told Reuters.
"The government has asked Rio Tinto to not increase the budget," J. Ganbaatar, the minister for mining and heavy industries, told Reuters on Jan. 16 in a video interview.
Rio Tinto declined to comment.
Mongolia owns 34% and Anglo-Australian miner Rio Tinto 66% of Oyu Tolgoi, one of the world's largest known copper and gold deposits, which is slated to eventually produce more than 500,000 tonnes of copper a year.
However, when the price of copper exceeds $9,000 a tonne, a 20% royalty is imposed on copper concentrate.