NEW RESULTS HAVE BEEN INTERPRETED TO SHOW THAT H-SPECIES ARE PRESENT IN LUNAR PYROCLASTIC GLASSES AND ON THE LUNAR SURFACE INFELDSPATHIC ROCKS. IF CORRECT THESE DISCOVERIES SIGNIFICANTLY AFFECT OUR UNDERSTANDING OF MAGMA DIFFERENTIATION AND VOLCANIC PROCESSESON THE MOON AND HAVE IMPLICATIONS FOR MODELS OF THE EVOLUTION OF THE MOON. WE PROPOSE TWO RESEARCH TASKS TO PROVIDE 1) NEW HDIFFUSION DATA NEEDED TO MODEL H DEGASSING FROM LUNAR PYROCLASTIC GLASSES; AND 2) DETAILED STUDIES OF H IN FELDSPARS FROM THE APOLLOCOLLECTION.TASK 1: WE WILL CREATE A TRULY UNIQUE SET OF EXPERIMENTAL DATA ON DIFFUSION RATES FOR H-SPECIES IN LOW- AND HIGH-TI LUNAR BASALTIC GLASSESAS A FUNCTION OF PRESSURE (1 ATMOSPHERE TO 1.5 GPA) AND H2O CONTENT (<0.5 WT. %) AT LOW OXYGEN FUGACITIES. EXPERIMENTAL RUN PRODUCTSWILL BE ANALYZED USING THE ION MICROPROBE MICRO-FOURIER TRANSFORM INFRARED SPECTROSCOPIC (IR) MAPPING AND STATE-OF-THE-ART HANALYSIS WITH AN INDUCTION FURNACE HEATER AND TUNABLE DIODE LASER ABSORPTION SPECTROMETER. THESE DATA WILL PROVIDE THE FIRST HDIFFUSION COEFFICIENTS APPROPRIATE FOR LUNAR COMPOSITIONS AND WILL ALLOW US TO CONSTRUCT A GENERAL MODEL FOR H DIFFUSIVITY USING 2-D DATAAS A FUNCTION OF COMPOSITION PRESSURE AND H2O CONTENT. OUR RESULTS WILL BE APPLIED TO MODELS OF VOLATILE DEGASSING ON THE MOON FROMDEPTH TO THE SURFACE.TASK 2: WE WILL MAKE MICRO-IR MAPS FOR H-SPECIES IN FELDSPATHIC LUNAR LITHOLOGIES FROM THE APOLLO COLLECTION. SAMPLES WILL BEINVESTIGATED WITH SEM MICRO-TRANSMISSION IR MAPPING AND SPOT ANALYSIS (~1 PPM DETECTION LIMIT) COMBINED WITH ELECTRONBACK-SCATTERED DIFFRACTION TO DETERMINE CRYSTALLOGRAPHIC ORIENTATION D SIMS DEPTH PROFILES OF H. THIS ANALYTICAL SUITE WILL PROVIDE DATATO CONSTRAIN THE SOURCE OF H OBSERVED REMOTELY IN FELDSPAR-RICH REGIONS. IMPORTANTLY WE WILL BE ABLE TO ADDRESS WHETHER H IS PRESENT INTHESE MATERIALS. IF H IS NOT PRESENT THEN THE REMOTELY SENSED H-SPECIES ARE LIKELY ADSORBED OR DUE TO SOLAR IMPLANTED H AT THE SURFACE.IF H IS PRESENT WE WILL DETERMINE THE HOST PHASE (SECONDARY VS. PRIMARY) THE SPECIATION AND IF NANO-FLUID INCLUSIONS ARE PRESENT.COMBINED THE PROPOSED TASKS WILL PROVIDE A UNIQUE DATASET TO INTERPRET TRENDS IN VOLATILE ELEMENTS IN DEGASSING MODELS AND ALLOWRESEARCHERS TO BETTER MODEL THE BULK H2O CONTENT OF THE MOON. THE PROPOSED WORK WILL CONTINUE THE RESEARCHERS' EFFORTS TO DISSEMINATESCIENTIFIC RESEARCH CONTRIBUTE TO TEACHING AND LEARNING AND IMPROVE RESEARCH INFRASTRUCTURE. THE RESEARCH WILL MAKE UP THE BODY OFONE PH.D. THESIS AND THE STUDENT WILL BE TRAINED IN HIGH-PRESSURE TECHNIQUES MICROBEAM ANALYSIS AND GEOCHEMICAL MODELING.COLLABORATIONS BETWEEN THE UNIVERSITY OF NEW MEXICO ARIZONA STATE UNIVERSITY AND MOUNT HOLYOKE COLLEGE WILL FOSTER EXCHANGE OFIDEAS IN PLANETARY SCIENCE AND WILL EDUCATE THE RESEARCHERS ON ONE ANOTHER'S FACILITIES. FINALLY THE PROPOSED WORK IS HIGHLY RELEVANT TOTHE SCIENTIFIC OBJECTIVES OF THE LASER PROGRAM TO INVESTIGATE THE LUNAR SURFACE AND INTERIOR USING EXPERIMENTAL/LABORATORYINVESTIGATIONS AND NUMERICAL MODELING OF DEGASSING PROCESSES.