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Depth dependent element ratios in fluid inclusion analysis by laser ablation ICP-MS

journal contribution
posted on 2023-05-17, 14:57 authored by Guillong, M, Pettke, T
Ratios of element count rates used for quantification of LA-ICP-MS analysis of fluid inclusions inside minerals change between shallow inclusions, ablated at crater depth to diameter aspect ratios <3 and deep inclusions, with aspect ratios >4, by up to a factor of 2.5. The Cl/Na and the Pb/Na ratios were found to be affected the most. Ablating a scapolite sample with homogeneous Na, Pb and Cl concentrations showed a similar pattern but of smaller magnitude. Such strong fractionation behaviour of chlorine has not been reported to date for LA-ICP-MS analysis. This aspect ratio dependent elemental fractionation is likely due to condensation-deposition and remobilisation effects within the laser ablation crater and may account for some of the scatter obtained when analysing a homogeneous assemblage of fluid inclusions located at variable depths below the surface. © 2012 The Royal Society of Chemistry.

Funding

Australian Research Council

AMIRA International Ltd

ARC C of E Industry Partner $ to be allocated

Anglo American Exploration Philippines Inc

AngloGold Ashanti Australia Limited

Australian National University

BHP Billiton Ltd

Barrick (Australia Pacific) PTY Limited

CSIRO Earth Science & Resource Engineering

Mineral Resources Tasmania

Minerals Council of Australia

Newcrest Mining Limited

Newmont Australia Ltd

Oz Minerals Australia Limited

Rio Tinto Exploration

St Barbara Limited

Teck Cominco Limited

University of Melbourne

University of Queensland

Zinifex Australia Ltd

History

Publication title

Journal of Analytical Atomic Spectrometry

Volume

27

Pagination

505-508

ISSN

0267-9477

Department/School

School of Natural Sciences

Publisher

RSC Publications

Place of publication

Thomas Graham House, Science Park, Milton Rd, Cambridge, England, Cambs, Cb4 0Wf

Rights statement

Copyright 2012 The Royal Society of Chemistry

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the earth sciences

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    University Of Tasmania

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