The rare earths arm of China Minmetals said on Thursday it had been notified its parent is planning a "strategic restructuring" of rare earth assets with another State-owned firm, Chinalco, and authorities in the city of Ganzhou.
China Minmetals Rare Earth Co and Chinalco Rare Earth & Metals are two of the "Big Six" State-run rare earth companies in China, the world's top producer of the 17 minerals used in consumer electronics and military equipment.
In a filing to the Shenzhen Stock Exchange, China Minmetals Rare Earth did not specify what sort of restructuring was under discussion.
"The relevant plan has not yet been finalised and needs to be approved by the relevant authorities," it said.
Ganzhou, in southern China's Jiangxi province, is one of the country's two main rare earth production hubs. It is home to the headquarters of China Minmetals Rare Earth as well as another of the Big Six, China Southern Rare Earth Group.
China Minmetals Rare Earth has seen its share price climb more than 230% year-to-date as rare earth prices jump on fears of tight supply, giving it a market capitalisation 44.25 billion yuan ($6.85 billion).