Lanthanum is the most abundant rare earth element by mass, typically constituting approximately 27-32% (~29% central estimate) of global REE oxide production — roughly 113,000 tonnes La2O3 in 2024 from a 390,000-tonne REO world total (USGS MCS 2025). Despite its abundance, La suffers from chronic price depression: La2O3 traded at approximately $1/kg in 2022-2024 (near historic lows, down from $2/kg in 2020-21), a consequence of the REE "balance problem" where La is extracted in fixed ratio with higher-value NdPr and Ce whenever any LREE-dominant ore is mined. China dominates both production (~69% of world REO) and refining (~91% of global REE separation capacity). US net import reliance for REE compounds and metals reached 80% in 2024e, prompting US government strategic stockpile targeting of 1,300 t La in FY 2024 and 1,100 t in FY 2025.

The leading end use for lanthanum is fluid catalytic cracking (FCC) catalysts in petroleum refining (~45% of La demand), where La2O3 stabilizes zeolite catalyst structures under high-temperature, high-conversion conditions. La-rich mischmetal for nickel-metal hydride (NiMH) battery negative electrodes is the second major demand driver (~25%), though lithium-ion adoption has substantially reduced NiMH's share in consumer electronics and is beginning to displace it in full-electric vehicles. NiMH retains competitiveness in hybrid electric vehicles (notably Toyota Prius-type HEV) due to lower cost and favorable partial-state-of-charge performance. Optical glass, polishing powders, and metallurgical alloys account for most of the remainder. Lanthanum has no role in neodymium-iron-boron (NdFeB) permanent magnets, limiting its participation in the strongest REE demand growth vectors (EV traction motors, wind turbines).

Despite its low market price, lanthanum attracts strategic attention because of China's near-monopoly on REE processing and La's essential role in FCC catalysts that refine the global petroleum supply. Light and heavy rare earths — including La — are designated as both Critical and Strategic Raw Materials under EU Regulation 2024/1252 (CRMA). Global mine production expanded 3.7% to 390,000 t REO in 2024e, driven by China, Nigeria, and Thailand, further reinforcing lanthanum's structural oversupply. The key long-term demand risk is accelerated adoption of lithium-ion batteries reducing NiMH consumption, while the key supply risk is any disruption to China's processing infrastructure affecting La2O3 availability for FCC catalyst manufacturers globally.