×

Rio Tinto’s California boron assets draw interest from bidders, Bloomberg News reports

By Thomson Reuters Apr 10, 2026 | 3:30 PM

April 10 (Reuters) – Rio Tinto’s U.S. assets that produce the critical mineral boron have drawn interest from more than ​a dozen potential bidders and could ‌be valued as much as $2 billion, Bloomberg News reported on Friday, citing sources.

WE Soda, Magris Resources and U.S. Silica Holdings are among the firms ‌interested ​in buying Rio’s boron assets ⁠in California and ⁠are expected to extend binding offers to Rio Tinto by June, according to the report.

Reuters could not immediately verify the report. Rio ​and the companies involved did not immediately respond to Reuters’ request for comment.

The ⁠mineral boron is used ⁠in nuclear energy, wind turbines, ​specialty glass, ceramics, advanced insulation, fertilizers, cleaning chemicals ​and as an additive in oil and ‌gas drilling.

Last year, Boron was added to the U.S. critical minerals list by the U.S. Geological Survey and the Interior Department, ⁠reflecting concerns over supply risks, limited substitutes and heavy concentration of production outside the U.S.

The potential ⁠move to ‌offload the asset comes after ⁠Simon Trott, the Anglo-Australian miner’s ​CEO, ‌outlined a plan in 2025 to ​generate $5 billion ⁠to $10 billion through divestments and productivity growth, in a move to simplify the structure of the world’s largest iron ore miner.

(Reporting by Carlos Méndez in Mexico City; Editing by ​Anil D’Silva)