Determining the water content of nominally anhydrous minerals at the nanometre scale
Publication Name
Review of Scientific Instruments
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.
Open Access Status
This publication is not available as open access
Volume
92
Issue
2
Article Number
023103
Funding Number
LE160100063
Funding Sponsor
Centre of Excellence for Core to Crust Fluid Systems, Australian Research Council