# are among the firms interested in buying Rio’s boron assets in California.

*business · news · 2026-04-10 · Bloomberg*

## Key points

- Rio Tinto's US boron assets have attracted interest from over a dozen potential bidders.
- The sale of these boron assets could fetch around $2 billion for Rio Tinto.
- WE Soda, Magris Resources, and US Silica Holdings are among the interested buyers.
- Rio Tinto's boron assets are located in California and produce a critical mineral for high-tech uses.

**Companies:** WE Soda, Magris Resources Inc., US Silica Holdings Inc.
**Countries:** Australia, United States

[Read the full story on Bloomberg](https://www.bloomberg.com/news/articles/2026-04-10/rio-is-said-to-draw-interest-for-us-critical-mineral-assets-in-california)

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