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HST UV-Visible Observations of the Apollo 17 Landing Area

Introduction: Visible (VIS) and near-infrared reflectance (400 – 2800 nm) of the lunar regolith is dominantly controlled by variations in the abundance of three components: 1) opaque minerals (ilmenite), 2) iron bearing silicate minerals, and 3) maturation products (glasses, coatings bearing nanophase metallic iron). The same parameters control reflectance into the near-UV (250 to 400 nm), with varying degrees of importance.