Vis-NIR BRDF (principal plane) of Phobos regolith simulants OPPS and UTPS-TB

Vis-NIR (0.6-3.6 µm) reflectance spectra (i=0-60°, az=0°, and phase angles from 5 to 130°) acquired with the SHADOWS instrument of mixtures of phyllosilicates, coals or carbon and other minerals used as a Phobos regolith simulant. Observatory of Paris Phobos Simulant OPPS (mixture of saponite, coals and olivine powders) and University of Tokyo Phobos Simulant, Tagish Lake based, UTPS-TB (powder mixture of serpentinite and other minerals)