Helium diffusion and (U-Th)/He thermochronology of pyromorphite

This dataset accompanies the study on helium diffusion in gem-quality pyromorphite from the Guangxi region, China. It includes comprehensive characterization of the GX pyromorphite samples, covering chemical composition, helium isotope measurements, U-Th concentrations, stepwise heating diffusion experiments, density functional theory (DFT) calculations of activation barriers, and ionic porosity calculations. All data are organized into six worksheets as described below.