Dollar weakness, which continued into early January after its biggest annual drop since 2003, had helped gold registred last week a fourth straight weekly gain for the first time since April.
Zinc hit its highest in more than a decade on Friday as concerns over market tightness persisted, while copper hit a two-week low as Chinese investor interest was muted with the Lunar New Year holidays looming.
The mine could supply up to 10% of world demand for neodymium and praseodymium, used in the manufacture of magnets for wind turbines, and electric vehicles.
Coal and iron ore dominated mining takeovers in 2017, Thomson Reuters data shows, with buyers favoring the heavily polluting devil they know over the uncertainties of a battery-powered future.