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Analysis of lunar highland regolith samples from Apollo 16 drive ...

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Modal analysis: thin sections versus integratedbulk grain mountsmodal%60504030204440433664002, 6019 (TS)64002, 262 (GM)64001, 6031 (TS)64001, 374 (GM)46444641• Minerals report as higherin thin section than incorresponding integratedgrain mounts.– Edge effects/mixedphases in thin sectionsreport as minerals?– Real effect <strong>from</strong> missingfractions in grain mounts?1003 3 3 31 1 1 1Plagioclase Pyroxene Olivine Glass– Sampling error <strong>from</strong>sieving?• Glass shows less regularpattern.9/15/2008 BAE Systems, Marshall SpaceFlight Center10

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