Data for: Lithium isotope compositions of U.S. coals and source rocks: Potential tracer of hydrocarbons

Raw and processed data files from NanoSIMS and IMS-6f measurements.纳米级二次离子质谱仪（NanoSIMS）与离子散射显微镜（IMS-6f）测量的原始及处理后的数据文件。