MP Materials Signs Long-Term Gadolinium Offtake With U.S. Aerospace and Defense Customer

Highlights

• MP Materials signed a long-term separated gadolinium agreement with an undisclosed U.S. aerospace and defense customer, confirmed by Reuters.
• Gadolinium is recovered from Mountain Pass's existing orebody as part of its SEG+ stream, enabling co-product economics without a separate mine.
• The deal signals MP's strategic pivot from NdPr champion to a multi-element rare earth refinery supplying qualified U.S. customers.
• China produced roughly 71% of global mined rare earths in 2024, making a domestic separated gadolinium source disproportionately strategic.
• Customer identity, volumes, pricing, and expected revenue remain undisclosed, preventing independent assessment of financial materiality.

MP Materials (NYSE: MP) has secured a significant long-term agreement for separated gadolinium with an unnamed U.S. aerospace and defense customer, independently confirmed by Reuters. The customer, volumes, and pricing remain undisclosed, making its financial value impossible to calculate. The strategic value is clearer: Mountain Pass is beginning to commercialize individual rare earths beyond its dominant NdPr business.

REEx Insight — The Orebody Becomes a Portfolio

Rare Earth Exchanges® sees the breakthrough as separation, not mining. Gadolinium (Gd) is a specialized rare earth occurring naturally alongside other lanthanides. MP classifies Gd as a medium rare earth within its SEG+ stream. Mountain Pass does not need a separate gadolinium mine: the opportunity is to recover and separate smaller quantities of Gd from an orebody already being mined at enormous scale. That changes the economics. One mine can generate an expanding portfolio of individually separated strategic materials. China produced roughly 71% of the world's mined rare earths in 2024, according to USGS, while its historical dominance of separation has been even greater. An American source of qualified, separated Gd therefore matters disproportionately.

Small Market, Strategic Metal

Gadolinium's unusual magnetic and neutron-absorbing properties support specialized applications across medical imaging, nuclear technology, advanced alloys, electronics, and defense. But this isn't copper. Gadolinium trades in a small, opaque market where purity, form, provenance, qualification, and contract terms can matter as much as a published price. For MP, the bigger opportunity is co-product economics: extracting additional commercial value from material already moving through Mountain Pass.

From NdPr Champion to Rare-Earth Refinery

MP is also developing separation capabilities for other elements, including strategically important dysprosium and terbium.

The direction is increasingly clear: Mountain Pass → multiple separated elements → metals and magnets → qualified U.S. customers.

That is more strategically powerful than simply exporting concentrate—and considerably closer to recreating the integrated rare-earth industrial capability the United States lost to China.

Investor caution: MP describes the agreement as significant and economically attractive, but has not disclosed customer identity, volume, pricing, specifications, or expected revenue. Those omissions prevent independent assessment of its financial materiality.