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|Title:||Crystal chemistry, alpha decay damage, and geochemical alteration of brannerite and davidite|
|Publisher:||Committee of Asia-Pacific Societies of Microscopy|
|Citation:||Lumpkin, G. R., Zhang, Y., Leung, S. H. F., & Ferenczy, J. (2012). Crystal chemistry, alpha decay damage, and geochemical alteration of brannerite and davidite. Paper presented to the APMC10 10th Asia-Pacific Microscopy Conference, ICONN2012 International Conference on Nanoscience and Nanotechnology, ACMM 22 Australian Conference on Microscopy and Microanalysis, Perth Convention and Exhibition Centre, 5-9 February 2022, Perh WA Australia. In Griffin, B., Faraone, L. & Martyniuk, M., (eds), APMC10: 10th Asia-Pacific Microscopy Conference, ICONN2012: International Conference on Nanoscience and Nanotechnology, ACMM 22: Australian Conference on Microscopy and Microanalysis, Perth Convention and Exhibition Centre : conference proceedings, 5-9 February 2012. (pp. 700-1-700-2).|
|Abstract:||To investigate the long-term stability of the uranium minerals brannerite and davidite, we have undertaken an electron microscopy study of samples from a range of geological environments worldwide. Our results indicate that both minerals are transformed to an amorphous phase after a dose of approximately 10 16 α mg-1, similar to other rare element oxide minerals. Both minerals are susceptible to alteration via interaction with hydrothermal fluids, although by different mechanisms. The U-Th-Pb chemical ages of brannerite are generally consistent with the known ages and geological histories of the host rocks. These ages are affected by U loss from altered areas and Pb loss from unaltered brannerite.|
|Appears in Collections:||Conference Publications|
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