The U.S. Geological Survey (USGS) collected over 1,840 physical property measurements on selected plutons in the Great Basin, primarily in California and Nevada. Data include station identifier, geographic coordinates, rock type, density, magnetic susceptibility, remanent magnetization, declination, and inclination where available. Data are presented in ASCII format and include density and magnetic property data in pluton_data.csv, a data dictionary describing the data fields in data_dictionary.csv, and a rock data dictionary listing rock types in rock_dictionary.csv. Preliminary results and interpretation were described by Ponce and others (2010) and some samples are from Sikora and others (1991). References: Ponce, D.A., Watt, J.T., and Glen, J.M.G., 2010, Physical properties and distribution of plutons in the Great Basin [abs.]: Eos (Transactions, American Geophysical Union), v. 91, no. 53; Sikora, R.F., Moore, J.G., and Oliver, H.W., 1991, Compilation and listing of 6,454 density measurements of samples from the central part of the Sierra Nevada batholiths, California: U.S. Geological Survey Open-File Report 91-570-A, 77 p