Anglo American says its Teck merger is testing a harder critical-minerals rulebook.

Anglo American CEO Duncan Wanblad said the company's proposed $54 billion combination with Teck Resources and the sale of its Brazilian nickel business have become test cases for deals involving strategically important minerals. The companies expect the Teck transaction, announced in 2025, to close by March 2027.

Reuters reported that China's antitrust regulator has sought a commitment to maintain copper-concentrate supply to the country. The European Union is separately examining Anglo's planned nickel sale to MMG, while the Teck merger would position the combined group as the world's fifth-largest copper producer.