Analysis of the distribution of microfractures and micropores within granitic rock using simultaneous polarization-fluorescence microscopy.

Heliyon

Japan Atomic Energy Agency, 1-64, Yamanouchi, Akiyo, Mizunami, Gifu, 509-6132, Japan.

Published: August 2020

AI Article Synopsis

  • The study emphasizes the importance of analyzing microfractures and micropores to understand mass transfer in rocks.
  • A new technique called 'simultaneous polarization-fluorescence microscopy' is introduced, allowing for efficient analysis of these microscopic voids in granitic rock.
  • The findings using this method align with previous imaging techniques, supporting its effectiveness for future high-magnification studies and analyses.

Article Abstract

The analysis of the distribution of microfractures and micropores is important to accurately characterise mass transfer within a rock body. In this paper, a new 'simultaneous polarization-fluorescence microscopy' method is presented, which can be used to analyse the distribution of microscopic voids, including microfractures and micropores, in granitic rock. In this method, thin sections prepared with fluorescent dye are analysed under a polarizing microscope equipped with a fluorescent reflected light source. Using both the transmitted and the fluorescent light sources, both the distribution of microfractures and micropores, and petrographic characteristics (mineral occurrences) can be determined efficiently and simultaneously. The distribution of microfractures and micropores observed in images of granites obtained using simultaneous polarization-fluorescence microscopy is consistent with the distribution observed in backscattered electron images. The low magnification characterisation of the distribution of microscopic voids also provides targeting for subsequent studies including scanning electron microscopy under high magnification, chemical analysis, and image processing.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7477268PMC
http://dx.doi.org/10.1016/j.heliyon.2020.e04815DOI Listing

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