Horizon Entropic — A harmonized 1960–2025 multi-material price panel and density-operator supply-risk observables for critical-material resilience

Open, reproducible dataset and code for studying the resilience of critical-material supply chains. It includes a harmonized monthly price panel for six energy-transition metals (1960-2025, 792 months); an annual USGS panel of real prices and world production for cobalt, lithium, rare earths and nickel; a tidy per-material uncertainty table (4,752 rows: log-returns, rolling volatility, rolling entropy, adverse shocks); and a monthly table of density-operator observables (von Neumann entropy, effective rank, l1-coherence, a Lindblad-forecast entropy, the dominant eigenvalue and a systemic-breadth label) derived by treating the multi-material correlation structure as a quantum density operator. Every file carries a SHA-256 fingerprint and the generating Python code (NumPy/pandas/matplotlib) is included, so all derived files can be regenerated from the public sources (World Bank, USGS, Mendeley). This dataset underlies a Scientific Data Data Descriptor and a Communications Sustainability research Article (COMMSSUSTAIN-26-0428). Data are released under CC BY 4.0; code under MIT.