Herfindahl-Hirschman Index: Critical Mineral Supply Concentration Guide

Measuring Upstream Monopolies: The Mathematics of Supply Concentration

Supply chain resilience assessments require objective mathematical frameworks to quantify geopolitical dependency risks. Utilizing the analytical algorithms in the critical minerals supply chain screener, policy analysts apply the Herfindahl-Hirschman Index (HHI) to measure concentration levels across global mining and mineral refining sectors.

The HHI is calculated by summing the squares of individual sovereign or corporate market shares. While an HHI below 1,500 indicates a competitive market, upstream processing for battery-grade lithium, graphite, and rare earths routinely scores above 6,000, signaling extreme monopoly risk.

Mining Extraction vs Chemical Refining Disconnect

HHI evaluations demonstrate that while mineral extraction is often geographically dispersed, chemical refining stages exhibit extreme single-jurisdiction choke points, magnifying vulnerability to trade embargoes.

Actionable De-Risking and Diversification Thresholds

Procurement directors utilize HHI scoring matrices to establish multi-sourcing quotas, allocating capital toward alternative emerging refineries to drive supply concentration down.