SANTIAGO, Dec 3 (Reuters) – Canadian fertilizer giant Nutrien is set to auction its 23.77 percent share in Chile’s SQM on Monday, the final step in completing the sale of a coveted stake in the world’s No. 2 lithium producer to China’s Tianqi.

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The Chilean Stock Exchange said the shares would be offered in a single block, and that the minimum bid would be set at $65 per share, for a total package price of $4.066 billion.

The auction is scheduled for 9:15 AM local time (1215 GMT) at the local stock exchange in Santiago.

Tianqi has agreed to purchase the shares. The company struck a deal this year to buy nearly a quarter of SQM from Nutrien, which must offload the stake to meet regulatory commitments after it was formed in January by the merger of Agrium and Potash Corp of Saskatchewan.

Tianqi’s interest in the Chilean lithium producer comes as Beijing is aggressively promoting electric vehicles to combat air pollution and help China’s domestic carmakers leapfrog the combustion engine to build global brands.

Lithium is a key ingredient in the batteries which power everything from cellphones to electric vehicles.

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