Frequency Response of Electrical Properties of some Granite Samples

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Gomaa M.M.

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Journal Paper

Paper Information

Journal: Journal of the Earth and Space Physics Year:2022 | Volume:47 | Issue:4 Page(s): 75-86

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Information Journal Paper

Title

Frequency Response of Electrical Properties of some Granite Samples

Author(s)

Gomaa M.M. | Issue Writer Certificate

Keywords

Conductivity

Granite

Frequency-domain

Electric

Dielectric constant

Abstract

The Electrical properties of rock types or channel structures have been the object of intense studies for many years. The main aim of the present work is to show the frequency response of Electrical properties of some Granite samples concerning chemical, minor and major composition. This may be used as a fingerprint for the characterization of some Granite rocks. Electrical measurements on Granite samples (surface, Aswan, Egypt) were measured (100 Hz up to 107 Hz). Differences in samples due to changes in texture lead to different changes in Electrical properties. The changes at Conductivity and diElectric constant are reflections from the texture within grains. Conductivity and diElectric constant values extend from ~10-8 to 10-4 (S/m) and 24 to 3. 5, respectively. With frequency increase, Conductivity increases, and diElectric constant decreases (10 kHz), and then it settles down. Differences in Electrical properties between samples are small as a direct result of the homogeneity and texture of most samples. There is a high dispersion of diElectric constant for relatively low-frequency values (<10 kHz) and no dispersion at relatively high frequencies. In conclusion, the diElectric constant decreases due to the shrinkage of energy levels for electrons and the increase of hopping particles between different particles.

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