Summary This dataset contains spectral reflectance values for laboratory mixtures that were created and analyzed at Arizona State University. These mixtures were made by combining red crystalline hematite, plagioclase, clinopyroxene (augite), and nontronite in varying abundances to understand how the spectral features are affected by variations in mineral abundances. Various files are described below. Contents SJacob_ASD_Mixture_Data.zip: full spectral reflectance data from the spectrometer at ASU for all mixtures discussed in the paper. SJacob_Lab_Mixture_parameters.xlsx: an excel sheet documenting the abundances of each mineral in the various mixtures that were created. This file also includes band depth parameters that were calculated for each mixture and some corresponding plots. SJacob_SupplementaryTables.xlsx: file contains two tables that list the Mastcam and ChemCam observations (with sequence IDs) that were used in the main paper and the associated sol on which the observation was taken. Attribution If you use this dataset, please cite this DOI: 10.5281/zenodo.3827971 as well as the paper below: Jacob et al. (2020) Spectral, Compositional, and Physical Properties of the Upper Murray Formation and Vera Rubin Ridge, Gale Crater, Mars. In review at Journal of Geophysical Research: Planets.