Supplementary Materials for:

This dataset contains the geochemical data supporting the research article: "Sulfide-derived hydrous fluids drive Fe isotope disequilibrium in silicates: Insights from the Hongqiling Ni-Cu sulfide deposit".The dataset includes both the tables from the main text and the supplementary materials:Main_Text_Tables 1-3: Data tabulated in the main text, including standard reference material values and iron isotopic compositions of rock-forming minerals and ore minerals.Supplementary Table S1: Major element compositions of rock-forming minerals (silicates and oxides).Supplementary Table S2: Major element compositions of ore minerals (sulfides).All data are provided in compliance with open science data availability requirements.