This data release includes whole rock (WR) geochemical data, and uranium-lead isotopic data collected using a sensitive high resolution ion microprobe-reverse geometry (SHRIMP-RG) instrument; the SHRIMP-RG is a type of secondary ion mass spectrometer (SIMS). Whole rock geochemistry data were analyzed at Bureau Veritas Commodities Canada Ltd. Laboratories in Vancouver, British Columbia, Canada. SHRIMP-RG data were collected at the USGS-Stanford University SHRIMP-RG in Palo Alto, California, USA. Rock samples for all methods were collected by Phillip Geer, Sean Regan, and Greg Walsh. SHRIMP-RG sample preparation and analyses were conducted by Ryan McAleer. The whole rock geochemistry and uranium-lead (U-Pb) isotopic data constrain the age of a mapped meta-plutonic unit in the eastern Adirondack Mountains of New York. The data release contains six files, including one metadata file and 5 comma-delimited (CSV) files. The CSV files include the following: EagleLake_SHRIMP_data.csv, EagleLake_SHRIMP_data_dictionary.csv, EagleLake_SHRIMP_summary.csv, EagleLake_WR_data.csv, and EagleLake_WR_data_dictionary.csv.