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Impurity heterogeneity in natural pyrite and its relation to internal electric fields mapped using remote laser beam induced current
journal contribution
posted on 2023-05-19, 09:02 authored by Laird, JS, Ross LargeRoss Large, Ryan, CGRegions of band-bending in naturally occurring semiconducting sulfides are thought to drive electrochemical reactions with passing fluids. Metal bearing fluids within the right pH range interact with the electric fields at the surface resulting in precious metal ore genesis, even in under-saturated solutions. Metal reduction at the surface occurs via field assisted electron transfer from the semiconductor bulk to the ion in solution via surface states. Better understanding the role these regions and their texturing play on nucleating ore growth requires imaging of electric field distributions near the sulfide surface and correlation with underlying elemental heterogeneity. In this paper we discuss PIXE measurements made on the CSIRO Nuclear Microprobe and correlate elemental maps with laser beam induced current maps of the electric field distribution. © 2013 Published by Elsevier B.V.
History
Publication title
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsVolume
306Pagination
249-252ISSN
0168-583XDepartment/School
School of Natural SciencesPublisher
Elsevier Science BvPlace of publication
Po Box 211, Amsterdam, Netherlands, 1000 AeRights statement
Copyright 2013 Published by Elsevier B.VRepository Status
- Restricted