Determining the water content of nominally anhydrous minerals at the nanometre scale

Sarath Patabendigedara; Derek Nowak; Mitchell J. B. Nancarrow; Simon Martin Clark

doi:10.1063/5.0025570

Determining the water content of nominally anhydrous minerals at the nanometre scale

Sarath Patabendigedara^*, Derek Nowak, Mitchell J. B. Nancarrow, Simon Martin Clark^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The amount and distribution of water in nominally anhydrous minerals (NAMs) are usually determined by Fourier-transform infrared spectroscopy. This method is limited by the spot size of the beam to the study of samples with dimensions greater than a few micrometers. Here, we demonstrate the potential of using photoinduced force microscopy for the measurement of water in NAMs with samples sizes down to the nanometer scale with a study of water concentration across grain boundaries in forsterite. This development will enable the study of water speciation and diffusion in small-grained rock matrixes and allow a determination of the influence of nanoscale heterogeneity on the incorporation of water to NAMs.

Original language	English
Article number	023103
Pages (from-to)	023103-1-023103-9
Number of pages	9
Journal	Review of Scientific Instruments
Volume	92
Issue number	2
DOIs	https://doi.org/10.1063/5.0025570
Publication status	Published - Feb 2021

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10.1063/5.0025570

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abstract = "The amount and distribution of water in nominally anhydrous minerals (NAMs) are usually determined by Fourier-transform infrared spectroscopy. This method is limited by the spot size of the beam to the study of samples with dimensions greater than a few micrometers. Here, we demonstrate the potential of using photoinduced force microscopy for the measurement of water in NAMs with samples sizes down to the nanometer scale with a study of water concentration across grain boundaries in forsterite. This development will enable the study of water speciation and diffusion in small-grained rock matrixes and allow a determination of the influence of nanoscale heterogeneity on the incorporation of water to NAMs. ",

author = "Sarath Patabendigedara and Derek Nowak and Nancarrow, {Mitchell J. B.} and Clark, {Simon Martin}",

year = "2021",

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Y1 - 2021/2

N2 - The amount and distribution of water in nominally anhydrous minerals (NAMs) are usually determined by Fourier-transform infrared spectroscopy. This method is limited by the spot size of the beam to the study of samples with dimensions greater than a few micrometers. Here, we demonstrate the potential of using photoinduced force microscopy for the measurement of water in NAMs with samples sizes down to the nanometer scale with a study of water concentration across grain boundaries in forsterite. This development will enable the study of water speciation and diffusion in small-grained rock matrixes and allow a determination of the influence of nanoscale heterogeneity on the incorporation of water to NAMs.

AB - The amount and distribution of water in nominally anhydrous minerals (NAMs) are usually determined by Fourier-transform infrared spectroscopy. This method is limited by the spot size of the beam to the study of samples with dimensions greater than a few micrometers. Here, we demonstrate the potential of using photoinduced force microscopy for the measurement of water in NAMs with samples sizes down to the nanometer scale with a study of water concentration across grain boundaries in forsterite. This development will enable the study of water speciation and diffusion in small-grained rock matrixes and allow a determination of the influence of nanoscale heterogeneity on the incorporation of water to NAMs.

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ER -

Determining the water content of nominally anhydrous minerals at the nanometre scale

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Developing a geophysically relevant conduction model for the upper mantle

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Determining the water content of nominally anhydrous minerals at the nanometre scale

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Developing a geophysically relevant conduction model for the upper mantle

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