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Impurity heterogeneity in natural pyrite and its relation to internal electric fields mapped using remote laser beam induced current

Citation

Laird, JS and Large, R and Ryan, CG, Impurity heterogeneity in natural pyrite and its relation to internal electric fields mapped using remote laser beam induced current, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 306 pp. 249-252. ISSN 0168-583X (2013) [Refereed Article]

Copyright Statement

Copyright 2013 Published by Elsevier B.V

DOI: doi:10.1016/j.nimb.2012.12.046

Abstract

Regions 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.

Item Details

Item Type:Refereed Article
Keywords:PIXE, laser beam induced current, geology, gold, ore genesis
Research Division:Earth Sciences
Research Group:Geology
Research Field:Ore Deposit Petrology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Large, R (Professor Ross Large)
ID Code:119617
Year Published:2013
Deposited By:CODES ARC
Deposited On:2017-08-03
Last Modified:2017-09-29
Downloads:0

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