Metro has a four-year binding off-take agreement to supply Xinfa with one million tonnes in the first year followed by 2Mtpa for each of the next three years
Mining began last Friday with an initial rate of 2Mt per annum.
Metro's ambition is to move to a steady state 6Mtpa over the first four years, while it has approvals in place to mine up to 10Mtpa.
Metro's move into bauxite mining has come during a period of high uncertainty in the alumina industry, with Credit Suisse one market analyst eyeing the "many moving parts in the alumina market at the moment" and being uncertain as to whether current strong pricing will continue this year.
"While the Alunorte dispute (in Brazil) has dominated alumina pricing, and the dispute appears to be settling in for ...