Mathematics – Logic
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1163..189g&link_type=abstract
MICRO-RAMAN SPECTROSCOPY AND LUMINESCENCE STUDIES IN THE EARTH AND PLANETARY SCIENCES: Proceedings of the International Conferen
Mathematics
Logic
Cathodoluminescence, Ionoluminescence, Geological Materials: Earth, Magma, Ice, Rocks, Etc., Major And Trace Element Geochemistry, Scanning Electron Microscopy, Direct Observation Of Dislocations And Other Defects
Scientific paper
Selected material from the lunar surface (Luna 16, 20, 24 missions) was investigated using a combination of CL microscopy and spectroscopy with locally resolved microanalytical methods (Micro-Raman, microprobe, SEM, PIXE) to get information about the mineralogy and the luminescence behavior. Although the general high iron content of most lunar minerals and rocks prevents luminescence activation, certain species on the moon show visible CL. The dominant luminescent minerals are plagioclases and minerals of the SiO2 group, but K-feldspar, zircon and Ca-phosphates show also CL emissions. The application of CL imaging reveals microtextures such as zonation, brecciation or deformation features, which are not discernable by other analytical methods. Spectral CL measurements show that the main luminescence activators in lunar minerals are structural defects, Mn2+, REE3+ and Fe3+. The results show principle similarities with terrestrial material but also significant differences (e.g., mineral association, no weathering, impact damage). The close relationship between specific conditions of formation/alteration, the defect structure, and the luminescence properties may provide important genetic information.
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