Journal article
Quantified, whole section trace element mapping of carbonaceous chondrites by Synchrotron X-ray Fluorescence Microscopy: 1. CV meteorites
KA Dyl, JS Cleverley, PA Bland, CG Ryan, LA Fisher, RM Hough
Geochimica Et Cosmochimica Acta | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2014
Abstract
We present the application of a new synchrotron-based technique for rapid mapping of trace element distributions across large areas of the CV3 meteorites Allende and Vigarano. This technique utilizes the Australian Synchrotron X-ray Fluorescence Microscopy (XFM) beam line with its custom designed and built X-ray detector array called Maia. XFM with Maia allows data to be collected using a 2. μm spot size at very low dwell times (~0.1-0.5. ms), resulting in maps of entire thin sections in ~5. h. Maia is an energy dispersive detector system with a large collection solid-angle, which allows full spectral acquisition and high sensitivity. Hence, there is no need to constrain the elements of inte..
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Funding Acknowledgements
We thank Dr. Anton Kearsley for providing us with the Allende meteorite samples. This research was undertaken on the X-ray Fluorescence Microscopy (XFM) beam line at the Australian Synchrotron, Victoria, Australia (Proposal 4790). We would like to also thank the beam line scientists for their expertise: Dr. Dave Patterson, Dr. Daryl Howard, and Dr. Katherine Spears. This work was supported by the Multi-modal Australian ScienceS Imaging and Visualisation Environment (MASSIVE) (www.massive.org.au). The authors acknowledge the facilities, and the scientific and technical assistance of the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy, Characterization, & Analysis, the University of Western Australia, a facility funded by the university, State, and Commonwealth Governments. PAB and KAD acknowledge the support of the Australian Research Council via the Australian Laureate Fellowship program. We would also like to thank A. E. Rubin and G. Flynn for their constructive reviews, as well as W. U. Reimold for his time and effort as Associate Editor.