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Impurity mapping in sulphide minerals using Time-resolved Ion Beam Induced Current imaging
journal contribution
posted on 2023-05-17, 05:09 authored by Laird, JS, Johnson, BC, Ganesan, K, Kandasamy, S, Davidson, GJ, Borg, S, Ryan, CGThe semiconducting properties and charge transport within natural minerals like pyrite are postulated to drive certain geochemical processes which can lead to precious metal ore genesis. In this paper we outline electrical measurements on mineral samples and present spatio-temporally resolved Ion Beam Induced Charge or Current studies on a Schottky pyrite junction. Au-Schottky contacts were fabricated in regions selected by thermoelectric and 4-point probe resistivity measurements. The complexity in charge transport due to impurity variations results in imaging contrast which is deemed important for fluid electrochemistry. The relevance of understanding charge collection in pyrite in the context of complex geochemical processes is briefly discussed. Crown Copyright © 2010.
History
Publication title
Nuclear Instruments and Methods in Physics Research B. Beam Interactions With Materials and AtomsVolume
268Issue
11-12Pagination
1903-1910ISSN
0168-583XDepartment/School
School of Natural SciencesPublisher
Elsevier Science BvPlace of publication
Po Box 211, Amsterdam, Netherlands, 1000 AeRepository Status
- Restricted