Clementine images of the lunar sample-return stations: Refinement of FeO and TiO2 mapping techniques

Clementine UVVIS images of the lunar sample-return sites have been processed and used to produce refined calibrations for the iron and titanium determination algorithms of Lucey ct al. [1995, 1996]. The high spatial resolution of the Clementine data permits individual sampling stations to be resolved at the Apollo 15, 16, and 17 landing sites. We find an excellent, linear correlation between the spectral Fe and Ti parameters and the average FeO and TiO2 contents of soils sampled at each site or station. This correlation demonstrates that these techniques can confidently be applied to other areas of the Moon. The Luna 24 site does not fit the Ti relation found for other sites, suggesting that either its sample is nonrepresentative or the reported landing coordinates are incorrect.