GeoPIXE element maps of samples GQ1943_2 and GQ1943_3
A series of element maps collected using the Maia 384 detector array on the XFM beamline at the Australian Synchrotron. Maps are RGB composites (indicated by file name) or a combination of black and white intensity with RGB. Lower resolution versions of these files are used in a paper on the application of microanalysis techniques in ore geology an... mored are made available here to allow the full resolution images (1:1 binning of pixels) to be accessed. less
Ore Deposit Petrology
14 Jun 2012
24 Oct 2014
Sunrise Dam Gold Mine
X-ray spectra were collected using the Maia 384 detector on the XFM beamline at the Australian Synchrotron. The spectral data were collected with an incident beam energy of 18.5 keV, a pixel size of 4 µm and dwell times per pixel of 0.97 msec. The Maia XFM full spectral data were analysed using the GeoPIXE software suite which uses a fundamental parameters approach, with spectral deconvolution and imaging using the Dynamic Analysis method based on fitting a representative total spectrum, and a detailed model of Maia detector array efficiency. Spectra are fitted using a X-ray line relative intensities that reflect integration of yields and X-ray self-absorption effects for the given matrix or mineral phase and the contrasting efficiency characteristics across the detector array. The result is a matrix transformation that allows projection of the full-spectral data into element maps in this collection.
This research was undertaken on the X-ray Fluorescence Microscopy beamline at the Australian Synchrotron, Victoria, Australia. This work was supported by AngloGold Ashanti.
CSIRO Data Licence
Pearce, Mark; Fisher, Louise; Ryan, Chris (2016): GeoPIXE element maps of samples GQ1943_2 and GQ1943_3. v2. CSIRO. Data Collection.
All Rights (including copyright) CSIRO 2016.
The metadata and files (if any) are available to the public.
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