No single exchange-settled price exists for samarium. Trade settles over-the-counter against benchmarks published by independent price-reporting agencies. We do not republish those numbers — consult the publishers directly:
What is samarium?
Samarium (Sm, atomic number 62) is a lanthanide rare earth metal, which is a soft silvery metal family element used in high-performance magnetic and nuclear applications.
Lynas Rare Earths
How samarium is priced
Samarium has no exchange-listed contract. The reference market is the Chinese domestic spot market, where prices are published daily by
Shanghai Metals Market (SMM) and the
China Rare Earth Industry Association. International benchmark assessments are published by
Fastmarkets and
Argus Media on a daily/weekly basis. Both are regulated benchmark administrators under UK/EU BMR. The
LME does not currently list a Samarium-specific contract; cash-settled rare-earth contracts on LME are limited to NdPr oxide.
Where samarium comes from
USGS does not publish samarium-specific mine production or reserve figures; it reports rare earths as a basket, with 2025e world mine production of 390,000 tons and reserves of more than 75,000,000 tons. The largest 2025e producers were China (270,000 tons), the United States (51,000 tons), Australia (29,000 tons), Burma (22,000 tons), and Brazil (2,000 tons).
USGS Mineral Commodity Summaries 2026: Rare Earths Full breakdown in the
production and
reserves sections.
Who produces samarium
Samarium is typically produced as part of rare-earth separation streams rather than as a standalone mined metal; Lynas produces mixed heavy rare earth compound SEGH containing samarium, and MP Materials said it plans to commence production of separated Sm from its heavy rare earth stream. China’s rare-earth industry is dominated by China Northern Rare Earth Group and China Rare Earth Group, which are the principal state-backed producers of light and heavy rare earths, respectively.
Lynas Rare Earths,
MP Materials Q3 2025 Earnings Release,
USGS 2023 Minerals Yearbook: China Full list of producers
below.
What samarium is used for
Lynas says samarium is used in powerful magnets, intravenous radiation treatments for some cancers, and as a stable neutron absorber for nuclear reactor control rods. The USGS rare-earths chapter also identifies magnets as the leading global rare-earth end use and catalysts as the leading domestic end use.
Lynas Rare Earths,
USGS Mineral Commodity Summaries 2026: Rare Earths
Key facts about samarium supply
- USGS MCS 2026: samarium oxide, 99.5% minimum, averaged 2.82 dollars per kilogram in 2025e, up from 2.01 in 2024 and 2.03 in 2021. USGS Mineral Commodity Summaries 2026: Rare Earths
- USGS MCS 2026: rare-earth mineral concentrates production was 51,000 tons in the United States in 2025e, while compounds and metals production was 8,900 tons. USGS Mineral Commodity Summaries 2026: Rare Earths
- USGS MCS 2026: U.S. net import reliance for rare-earth compounds and metals was 67% of apparent consumption in 2025e, down from more than 95% in 2021 and 2022. USGS Mineral Commodity Summaries 2026: Rare Earths
- USGS MCS 2026: rare-earth compounds and metals import sources were China 71%, Malaysia 13%, Japan 5%, and Estonia 5% in 2021–24. USGS Mineral Commodity Summaries 2026: Rare Earths
- USGS MCS 2026: limited quantities of rare earths were recovered from batteries, permanent magnets, and fluorescent lamps, and FY 2025 potential acquisitions included 60 tons of samarium-cobalt alloy in the National Defense Stockpile. USGS Mineral Commodity Summaries 2026: Rare Earths
Sources: USGS Mineral Commodity Summaries 2026: Rare Earths, Lynas Rare Earths, Lynas Rare Earths products, MP Materials Q3 2025 Earnings Release, USGS 2023 Minerals Yearbook: China
Per-country production data not published by USGS
USGS Mineral Commodity Summaries 2026 reports rare-earth production and reserves on a combined rare-earth-oxide (REO) basis only — per-country data are not broken out by individual element. Samarium production and reserves figures are not separately published by USGS. For the consolidated REE-group table covering all rare earths, see the Rare Earth Elements (REE) page.
Source: USGS MCS 2026
No producer data available for this metal.
What is the primary source for samarium production and reserves data?
Country-level samarium production and reserves figures on TSM Hub are sourced directly from the
USGS Mineral Commodity Summaries 2026, the U.S. Geological Survey's authoritative annual reference. Company-level production figures come from each producer's official annual report, production report, or regulated exchange filing.