Supply Chain

Terbium Supply Chain: From Mine to Market

Terbium follows the heavy rare earth supply chain with China and Myanmar controlling ~98% of production. Ion-adsorption clay deposits in southern China are the primary source, with Myanmar (Kachin State) as a significant supplementary source feeding Chinese separators. Separation requires many stages of solvent extraction. Terbium serves two main functions: as an additive in NdFeB magnets (complementing dysprosium for high-temperature coercivity) and in Terfenol-D magnetostrictive alloy used in US Navy sonar systems and precision actuators. Browns Range in Australia (Northern Minerals) is one of the only projects globally that could produce significant terbium outside the Chinese supply chain.

Production Geography

Global Terbium production is led by China, which accounts for approximately 98% of world output, followed by Myanmar. The full list of major producing nations includes China, Myanmar, Australia. This geographic concentration means that disruptions in key producing regions can have outsized impacts on global supply and pricing.

Extraction Methods

Terbium is extracted using the following primary methods:

• Ion-adsorption clay leaching
• Byproduct of bastnasite/monazite mining

Processing and Intermediate Products

Terbium is primarily sourced from Ion-adsorption clays, Xenotime, Monazite. After extraction, the raw material undergoes multiple processing steps including beneficiation, chemical treatment, and refining to reach the purity levels required by downstream industries. Typical ore grades range from 0.01-0.05% Tb4O7.

Key Supply Chain Participants

The Terbium supply chain involves these major companies:

Supply Chain Vulnerabilities

Key vulnerabilities in the Terbium supply chain include concentration of 98% of production in China, limited processing capacity diversification, and long lead times for new mining projects. The high supply risk rating reflects the severity of these concentration risks and the difficulty of rapidly establishing alternative supply sources.