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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Microanalysis of ore-forming fluids using the scanning proton microprobe
Nuclear Inst. and Methods in Physics Research, B, Volume 104, No. 1-4, Year 1995
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Description
Much of the uncertainty in our early method of microanalysis of fluid inclusions using PIXE stemmed from the heterogeneous internal structure of each inclusion, which typically contains a vapor bubble and daughter crystals, and the non-uniform beam dose distribution. This paper reports on recent work to improve the accuracy of quantitative analysis through the use of beam-scanning techniques which provide a controlled beam-dose distribution. Improvements have been made to the PIXE yield modelling to better account for large vapor bubbles, and all fluid inclusion analysis routines have been incorporated as standard features of the GeoPIXE software package. The method has been tested using synthetic fluid inclusions in quartz (solutions of Na, K, Zn, Rb and Cs chlorides). The results demonstrated an accuracy improved to ∼10-15%. Examples show the application of the method for the analysis of ore-forming fluids in magmatic hydrothermal systems. © 1995.
Authors & Co-Authors
Ryan, Christopher Gregory
Australia, Brisbane
Csiro Exploration and Mining
Heinrich, Christoph A.
Australia, Canberra
Australian Geological Survey Organization
van Achterbergh, Esmé
South Africa, Faure
National Accelerator Centre
Ballhaus, Christian
Germany, Freiburg Im Breisgau
Universität Freiburg
Mernagh, T. P.
Australia, Canberra
Australian Geological Survey Organization
Statistics
Citations: 43
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1016/0168-583X(95)00446-7
ISSN:
0168583X
Study Approach
Quantitative