This code uses the Hapke treatment of radiative transfer theory to compute visible and near infrared (VNIR) optical constants, n and k, from reflectance spectra of pure minerals at multiple grain sizes and viewed at multiple phase angles. The program is run from the MASTERPROGRAM*.m file. Each section must be run in order, however sections can be rerun if the results are not adequate. "How to Run Hapke Radiative Transfer Model to Determine Optical Constants.pdf" is detailed instructions for running each section. The first version of this code was released with Sklute et al. (2015) Am Mineral, 100, 1110-1122. The most recent version of the code was described in Sklute et al. (2021) 52nd LPSC, Abstract #1258. Sample data provided with this code are for personal use only. If you wish to use them in a publication, please contact E Sklute for the appropriate citation and permission. This work was supported, in part, by the NASA RISE2 SSERVI team and NASA PDART seed funding, award #80NSSC18K0528

{"references": ["Sklute et al. (2015) Am Mineral, 100, 1110-1122.", "Sklute et al. (2021) 52nd LPSC, Abstract #1258."]}

email ecsklute@mtholyoke.edu if you find I forgot a file or have any questions.