Key points are not available for this paper at this time.
The relative spectral reflectivity, 0.40 to 1.10μ, was measured for 10- to 18-km-diameter lunar areas centered on the five prime Apollo landing sites. Though the spectral reflectivities of the Apollo sites appear typical of the lunar maria in general, significant differences were found among the five sites. The reflectivity differences are attributed to compositional and/or mineralogical differences in the lunar surface materials.
McCord et al. (1969) studied this question.