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The Rare Earth Gambit

Key Insights Across the Series
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  • The Processing Concentration Index (PCI = Σ(s²ᵢ × processingᵢ ÷ miningᵢ)) corrects the standard HHI’s failure to distinguish between geographic market power at the mining stage and at the processing stage; for lithium hydroxide, the PCI is approximately 6,800 against a mining-stage HHI of 2,400 — a 2.8× amplification that reflects China’s 68% share of processing against its 22% share of mining, making lithium’s effective supply-chain concentration nearly three times what standard market power metrics report.
  • The IRA’s domestic content requirements for battery critical minerals — requiring 40% (escalating to 80% by 2027) of the value of critical minerals to be extracted or processed in the United States or a free-trade agreement partner country — are calibrated to mining origin, which is the less concentrated stage of the supply chain; the processing chokepoint, where concentration is 2.8× higher, is not specifically targeted by any IRA provision, creating a policy that addresses a real vulnerability while missing the more binding one.
  • China’s monopoly position in rare earth permanent magnet processing — used in EV traction motors, wind turbine generators, and industrial robots — is more extreme than its lithium position: China processes approximately 90% of rare earth oxides globally, against approximately 60% of rare earth mining; its PCI for neodymium-iron-boron magnet precursor processing exceeds 8,500, against a mining HHI of approximately 5,800, an amplification of 1.47×.
  • Resource nationalism cycles in critical mineral supply chains follow a consistent pattern: ore discovery and initial exploitation by foreign capital; domestic political coalescence around resource revenue; nationalisation or renegotiation of extraction terms; partial or full exclusion of foreign processing investment; price spike in downstream processing as supply concentrates; investment in alternative processing capacity outside the nationalising state, often requiring 8–15 years to reach production scale.
  • The minimum timeline from greenfield lithium processing facility announcement to first commercial production — including environmental permitting, construction, commissioning, and qualification of output for battery manufacturers — is approximately 7–12 years for a facility in a jurisdiction with established regulatory processes; in the United States, NEPA environmental review timelines for mining projects have averaged approximately 4.5 years in recent decades, and permitting for associated processing facilities runs on separate tracks; the supply-chain resilience measures announced by the U.S. government in 2021–2022 will not reach production scale before the mid-2030s electric vehicle deployment volumes require the capacity.

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