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dc.contributor.authorCourtney-Davies, Liam
dc.contributor.authorGilbert, Sarah
dc.contributor.authorCiobanu, Cristiana
dc.contributor.authorTapster, Simon
dc.contributor.authorRichardson, Marcus
dc.contributor.authorCook, Nigel
dc.contributor.authorWade, Bnejamin
dc.contributor.authorVerdugo-Ihl, Max
dc.contributor.authorEhrig, Kathy
dc.contributor.authorCondon, Daniel
dc.contributor.editorSylvester, Paul
dc.identifier.citationCourtney-Davies, L. and Gilbert, S. and Ciobanu, C. and Tapster, S. and Richardson, M. and Cook, N. and Wade, B. et al. 2020. A Synthetic Haematite Reference Material for LA‐ICP‐MS U‐Pb Geochronology and Application to Iron Oxide‐Cu‐Au Systems. Geostandards and Geoanalytical Research.

In both nature and synthetic experiments, the common iron oxide haematite (α‐Fe2O3) can incorporate significant amounts of U into its crystal structure and retain radiogenic Pb over geological time. Haematite is a ubiquitous component of many ore deposit types and, therefore, represents a valuable hydrothermal mineral geochronometer, allowing direct constraints to be placed on the timing of ore formation and upgrading. However, to date, no suitable natural haematite reference material has been identified. Here, a synthetic haematite U‐Pb reference material (MR‐HFO) is characterised using LA‐ICP‐MS and ID‐TIMS. Centimetre‐scale ‘chips’ of synthesised α‐Fe2O3 were randomly microsampled via laser ablation‐extraction and analysed using ID‐TIMS. Reproducible U/Pb and Pb/Pb measurements were obtained across four separate chips (n = 13). Subsequently, an evaluation of the suitability MR‐HFO in constraining U‐Pb data via LA‐ICP‐MS is presented using a selection of natural samples ranging from Cenozoic to Proterozoic in age. The MR‐HFO normalised U‐Pb ratios are more concordant and ages more accurate versus the same LA‐ICP‐MS spot analyses normalised to zircon reference material, when compared with independently acquired ID‐TIMS data from the same natural haematite grains. Results establish MR‐HFO as a suitable reference material for LA‐ICP‐MS haematite U‐Pb geochronology.

dc.publisherAssociation Scientifique pour la Geologie et ses Applications
dc.titleA Synthetic Haematite Reference Material for LA‐ICP‐MS U‐Pb Geochronology and Application to Iron Oxide‐Cu‐Au Systems
dc.typeJournal Article
dcterms.source.titleGeostandards and Geoanalytical Research
curtin.departmentJohn de Laeter Centre (JdLC)
curtin.accessStatusFulltext not available
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidCourtney-Davies, Liam [0000-0002-7362-1786]
curtin.contributor.scopusauthoridCourtney-Davies, Liam [57191572926]

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