WE WILL USE NON-DESTRUCTIVE ELECTRON AND X-RAY MICROBEAM TECHNIQUES TO STUDY THE SAMPLES (STANDARD POLISHED THIN SECTIONS). STUDY AREAS WILL BE DOCUMENTED AND IN SOME CASES SPECIFIC MINERAL GRAINS SELECTED BY SCANNING ELECTRON MICROSCOPY. MINERAL COMPOSITIONS WILL BE DETERMINED BY ELECTRON MICROPROBE MICROANALYSIS AND VALENCE AND COORDINATION OF TI V AND CR WILL BE DETERMINED BY X-RAY ABSORPTION NEAR-EDGE STRUCTURE (XANES) SPECTROSCOPY AT THE ADVANCED PHOTON SOURCE AT ARGONNE NATIONAL LABORATORY. THE VALENCES OF TI V AND CR IN LUNAR ROCKS ARE LARGELY UNKNOWN. THE STRAIGHTFORWARD MEASUREMENTS PROPOSED HEREIN WILL CHANGE THAT AND A SHARPER PICTURE OF REDOX CONDITIONS IN THE LUNAR MANTLE AND CRUST WILL EMERGE. THIS WORK WILL IMPROVE OUR KNOWLEDGE OF REDOX CONDITIONS THAT EXISTED DURING THE CRYSTALLIZATION OF LUNAR IGNEOUS AND IMPACT MELT ROCKS AND THEREFORE OUR UNDERSTANDING OF THE VALENCES AND VALENCE STATE PARTITIONING OF TI V AND CR IN LUNAR SAMPLES. AS AN INVESTIGATION INTO INTERNAL PHYSICAL CONDITIONS AND PROCESSES OF LUNAR GEOLOGICAL HISTORY AFTER ITS INITIAL STAGES THIS WORK IS RELEVANT TO THE SOLAR SYSTEM WORKINGS PROGRAM CALL.