Solvay Secures 70% of Colossus Magnet Rare Earth Output in Brazilian Supply Deal Through 2034

Nov 4, 2026

3 minute read.

Highlights

  • Solvay signed a long-term feedstock agreement with Viridis Mining covering ~70% of Colossus project rare earth output through 2034, with first-offer rights on the remainder.
  • The deal targets neodymium, praseodymium, dysprosium, and terbium, with shipments to Solvay's La Rochelle, France separation facility expected by 2028.
  • Price-floor provisions in the agreement aim to improve Colossus project bankability by protecting Viridis against falling rare earth prices.
  • Solvay is also exploring a rare earth joint venture with OneIM, a business generating roughly €80 million in annual EBITDA, with terms still undisclosed.
  • Solvay reported Q3 revenue of €1.031 billion and EBITDA down 25.3% year over year, with net debt at €1.8 billion and leverage at 2.4 times.

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By Daniel

Inspired to launch Rare Earth Exchanges in part due to his lifelong passion for geology and mineralogy, and patriotism, to ensure America and free market economies develop their own rare earth and critical mineral supply chains.

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Solvay secures 70% of Colossus project rare earth output in a deal with Viridis Mining through 2034, targeting NdPr, Dy, and Tb for its La Rochelle facility. (read full article...)

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