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Journal Article

Monitoring hydration in lime-metakaolin composites using electrochemical impedance spectroscopy and nuclear magnetic resonance spectroscopy Open Access

G. L. Pesce, C. R. Bowen, J. Rocha, M. Sardo, G. C. Allen, P. J. Walker, G. Denuault, M. Serrapede, R. J. Ball
Journal: Clay Minerals
Published: 01 June 2014
Clay Minerals (2014) 49 (3): 341–358.
DOI: https://doi.org/10.1180/claymin.2014.049.3.01
...G. L. Pesce; C. R. Bowen; J. Rocha; M. Sardo; G. C. Allen; P. J. Walker; G. Denuault; M. Serrapede; R. J. Ball Abstract This paper describes a study of the hydraulic reactions between metakaolin (MK) and air lime using electrochemical impedance spectroscopy (EIS) and nuclear magnetic resonance...
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View PDF for article title, Monitoring hydration in lime-metakaolin composites using electrochemical <span class="search-highlight">impedance</span> <span class="search-highlight">spectroscopy</span> and nuclear magnetic resonance <span class="search-highlight">spectroscopy</span>
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Journal Article

Impedance Spectroscopy of the Mineral–Electrolyte Interfaces Available to Purchase

Youzheng Qi, Yuxin Wu
Published: 28 March 2025
Reviews in Mineralogy and Geochemistry (2025) 91A (1): 85–104.
DOI: https://doi.org/10.2138/rmg.2025.91A.03
... kHz) and geomaterials, viz the low-frequency impedance spectroscopy (IS), for its merit of interrogating the mineral–electrolyte interfaces ( Dukhin 1993 ). Although the term IS is used here, it may appear as induced polarization ( Sumner 1976 ), low-frequency dielectric dispersion ( Schwarz 1962...
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View PDF for article title, <span class="search-highlight">Impedance</span> <span class="search-highlight">Spectroscopy</span> of the Mineral–Electrolyte Interfaces
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Journal Article

Complex impedance spectroscopy and ionic transport properties of natural leucite, K 0.90 Na 0.08 [Al 0.98 Si 2.02 ]O 6 , as a function of temperature and pressure Available to Purchase

R. L. Jones, M. Thrall, C. M. B. Henderson
Published: 01 June 2010
Mineralogical Magazine (2010) 74 (3): 507–519.
DOI: https://doi.org/10.1180/minmag.2010.074.3.507
...R. L. Jones; M. Thrall; C. M. B. Henderson Abstract The temperature ( T ) and pressure ( P ) dependence of dielectric and conductivity properties of natural leucite were determined using complex impedance spectroscopy at frequencies from 10 3 to 10 6 Hz. Experiments were carried out in a Walker...
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View PDF for article title, Complex <span class="search-highlight">impedance</span> <span class="search-highlight">spectroscopy</span> and ionic transport properties of natural leucite, K 0.90 Na 0.08 [Al 0.98 Si 2.02 ]O 6 , as a function of temperature and pressure
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Journal Article

Comparison between thermally-stimulated current and complex impedance spectroscopy measurements on a dehydrated Ca-montmorillonite Available to Purchase

A. HAOUZI, H. BELARBI, J. C. GIUNTINI, J. VANDERSCHUEREN, S. STAUNTON, J. V. ZANCHETTA
Journal: Clay Minerals
Published: 01 April 2000
Clay Minerals (2000) 35 (2): 323–333.
...A. HAOUZI; H. BELARBI; J. C. GIUNTINI; J. VANDERSCHUEREN; S. STAUNTON; J. V. ZANCHETTA Abstract The polarization conductivity, σ′(ω) of a Ca-montmorillonite has been determined by complex impedance spectroscopy. The technique of thermally-stimulated currents (TSC) leads to the determination...
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View PDF for article title, Comparison between thermally-stimulated current and complex <span class="search-highlight">impedance</span> <span class="search-highlight">spectroscopy</span> measurements on a dehydrated Ca-montmorillonite
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Journal Article

Aggregation in Na-, K- and Ca-montmorillonite dispersions, characterized by impedance spectroscopy Available to Purchase

G. ROY, M. PELLETIER, F. THOMAS, C. DESPAS, J. BESSIÈRE
Journal: Clay Minerals
Published: 01 April 2000
Clay Minerals (2000) 35 (2): 335–343.
...G. ROY; M. PELLETIER; F. THOMAS; C. DESPAS; J. BESSIÈRE Abstract Montmorillonite-water-cation systems were characterized using high-frequency impedance spectroscopy by studying the influence of the solid concentration and the nature of the exchangeable cation (Na + , K + , Ca 2...
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View PDF for article title, Aggregation in Na-, K- and Ca-montmorillonite dispersions, characterized by <span class="search-highlight">impedance</span> <span class="search-highlight">spectroscopy</span>
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Electrochemical Impedance Spectroscopy (EIS) on oriented hematite electrodes. (a) Set-up for Global EIS measurement on mm-sized electrode, showing interfacial distribution of charge carriers, alongside equivalent electric circuit model used for the extraction of capacitance (Cdl, CPE) terms. Redrawn from Shimizu and Boily (2015). (b) Experimental global EIS spectra of imaginary (Im) and real (Re) impedance (Z) for the (012) face of hematite (left). EDL parameters (right) for double layer capacitance (Cdl), adsorption capacitance (Cad) and resistance (Rad) were obtained by equivalent electric circuit modeling. These revealed a systematic response to pH. All data in (b) were taken and redrawn from Shimizu and Boily (2015). (c) Set-up for local EIS using a 25 mm-wide Pt ultramicroelectrode, and representative equivalent circuit. (d) Microscale spatial distribution of adsorption (Cad) and double layer (Cdl) capacitance extracted by local EIS on hematite electrodes on the (001) and (012) faces. (c) and (d) were redrawn from Lucas and Boily (2015).

Electrochemical Impedance Spectroscopy (EIS) on oriented hematite electrode... Available to Purchase

Published: 28 March 2025
Figure 21. Electrochemical Impedance Spectroscopy (EIS) on oriented hematite electrodes. (a) Set-up for Global EIS measurement on mm-sized electrode, showing interfacial distribution of charge carriers, alongside equivalent electric circuit model used for the extraction of capacitance ( C dl
Image
Sample preparation and impedance spectroscopy. (a) Sample preparation by using three ingredients (bentonite powder, Fontainebleau sand, and deionized water) and mixing them before compacting the mixture in a mold and using a press to obtain a cylindrical sample at the desired clay and water contents. (b) Electrical impedance spectroscopy. Position of the electrodes (A and B are the current electrodes, and M and N are the voltage electrodes). The measurements are made with a Zurich Instruments MFIA Impedance Analyzer used to measure the impedance spectrum in the frequency range 1 mHz–45 kHz.

Sample preparation and impedance spectroscopy. (a) Sample preparation by us... Open Access

Published: 07 January 2025
Figure 2. Sample preparation and impedance spectroscopy. (a) Sample preparation by using three ingredients (bentonite powder, Fontainebleau sand, and deionized water) and mixing them before compacting the mixture in a mold and using a press to obtain a cylindrical sample at the desired clay
Image
(a–c) Nyquist diagrams of impedance spectroscopy for kaolinite III at 8.0 GPa over the temperature range of 293–673 K. (d) The correspondent temperature-dependent electrical conductivity relationship.

( a–c ) Nyquist diagrams of impedance spectroscopy for kaolinite III at 8.0... Open Access

Published: 01 March 2022
Figure 8. ( a–c ) Nyquist diagrams of impedance spectroscopy for kaolinite III at 8.0 GPa over the temperature range of 293–673 K. ( d ) The correspondent temperature-dependent electrical conductivity relationship.
Image
Example of the impedance spectroscopy response of an electrode-soil system characterized by Eq. 6.

Example of the impedance spectroscopy response of an electrode-soil system ... Available to Purchase

Published: 01 November 2011
Figure 12. Example of the impedance spectroscopy response of an electrode-soil system characterized by Eq. 6 .
Journal Article

Application of Electro-Osmosis to Reduce the Adhesion of Clay during Mechanical Tunnel Driving Available to Purchase

GIOVANNI SPAGNOLI, NORBERT KLITZSCH, TOMÁS FERNÁNDEZ-STEEGER, MARTIN FEINENDEGEN, ALVARO REAL REY, HELGE STANJEK, RAFIG AZZAM
Published: 01 November 2011
Environmental & Engineering Geoscience (2011) 17 (4): 417–426.
DOI: https://doi.org/10.2113/gseegeosci.17.4.417
...Figure 12. Example of the impedance spectroscopy response of an electrode-soil system characterized by Eq. 6 . ...
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View PDF for article title, Application of Electro-Osmosis to Reduce the Adhesion of Clay during Mechanical Tunnel Driving
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Journal Article

Electrical conductivity of hydrous wadsleyite Available to Purchase

Claudia Romano, Brent T. Poe, James Tyburczy, Fabrizio Nestola
Published: 01 June 2009
European Journal of Mineralogy (2009) 21 (3): 615–622.
DOI: https://doi.org/10.1127/0935-1221/2009/0021-1933
...Claudia Romano; Brent T. Poe; James Tyburczy; Fabrizio Nestola Abstract In situ complex impedance spectroscopy of H 2 O-bearing wadsleyite was performed in a multianvil apparatus at 14 GPa at temperatures up to 950 °C in order to determine electrical conductivity. With increasing H 2 O content...
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View PDF for article title, Electrical conductivity of hydrous wadsleyite
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Journal Article

The Whitehill Formation – a high conductivity marker horizon in the Karoo Basin Available to Purchase

Thomas Branch, Oliver Ritter, Ute Weckmann, Reinhard F. Sachsenhofer, Frank Schilling
Published: 01 September 2007
South African Journal of Geology (2007) 110 (2-3): 465–476.
DOI: https://doi.org/10.2113/gssajg.110.2-3.465
... shales with up to 14 weight % carbonaceous matter. Rocks can exhibit high electrical conductivity if electronically conducting minerals, such as graphite, are interconnected. To study physical properties and the maturity of the carbon present in the Whitehill Formation, impedance spectroscopy...
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View PDF for article title, The Whitehill Formation – a high conductivity marker horizon in the Karoo Basin
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Journal Article

In-situ and ex-situ experimental investigation on the chalcopyrite replacement in saline solution at 310–365 °C and 15–25 MPa Available to Purchase

Luying Wang, Heping Li, Qingyou Liu, Sen Lin, Shengbin Li
Published: 01 January 2025
American Mineralogist (2025) 110 (1): 93–100.
DOI: https://doi.org/10.2138/am-2023-9136
... analyzed ex situ using Raman spectroscopy and a scanning electron microscope (SEM) with an energy-dispersive X-ray spectrometer (EDS). Chalcopyrite dissolution was monitored by open circuit potential (OCP), polarization curves, and electrochemical impedance spectroscopy (EIS). The ex-situ and in-situ...
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View PDF for article title, In-situ and ex-situ experimental investigation on the chalcopyrite replacement in saline solution at 310–365 °C and 15–25 MPa
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Journal Article

Discriminating ionic mobility between diffusivity and electrical conductivity experiments on Earth’s silicate materials Available to Purchase

Xiaozhi Yang
Published: 30 December 2024
American Mineralogist (2024)
DOI: https://doi.org/10.2138/am-2024-9523
... are exclusively present, and during the runs, there is net transfer of the charged species. In conduction experiments, the sample is usually homogeneous in composition: no potential gradients are involved, and there is no net transfer of the charged species (e.g., for analyses using impedance spectroscopy...
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Early Publication
Journal Article

Impedance spectra of hot, dry silicate minerals and rock: Qualitative interpretation of spectra Available to Purchase

J. Stephen Huebner, Roberta G. Dillenburg
Published: 01 February 1995
American Mineralogist (1995) 80 (1-2): 46–64.
DOI: https://doi.org/10.2138/am-1995-1-206
...J. Stephen Huebner; Roberta G. Dillenburg Abstract Impedance spectroscopy helps distinguish the contributions that grain interiors and grain boundaries make to electrical resistance of silicate minerals and rocks. The technique also distinguishes the low-frequency response due to the presence...
View PDF for article title, <span class="search-highlight">Impedance</span> spectra of hot, dry silicate minerals and rock: Qualitative interpretation of spectra
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Journal Article

Modification and characterization of an Iranian montmorillonite as a corrosion/mechanical promoter for epoxy coatings Available to Purchase

S. Ghodrati, A. Mahmoodi, M. Mohseni
Journal: Clay Minerals
Published: 01 December 2018
Clay Minerals (2018) 53 (4): 603–620.
DOI: https://doi.org/10.1180/clm.2018.41
.... Electrochemical impedance spectroscopy (EIS) and salt spray/image processing results revealed that addition of OMMT to the epoxy coating significantly increased the corrosion resistance of the coating compared to neat and MMT-containing epoxy coatings. The optimum concentration of OMMT was 3 wt...
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View PDF for article title, Modification and characterization of an Iranian montmorillonite as a corrosion/mechanical promoter for epoxy coatings
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Cross-section diagram of the sample assemblage for high-pressure impedance spectroscopy measurements.

Cross-section diagram of the sample assemblage for high-pressure impedance ... Available to Purchase

Published: 01 May 2024
Figure 3. Cross-section diagram of the sample assemblage for high-pressure impedance spectroscopy measurements.
Journal Article

Electrical conductivities of pyrope-almandine garnets up to 19 GPa and 1700 °C Available to Purchase

Claudia Romano, Brent T. Poe, Nadia Kreidie, Catherine A. McCammon
Published: 01 August 2006
American Mineralogist (2006) 91 (8-9): 1371–1377.
DOI: https://doi.org/10.2138/am.2006.1983
... to 1700 °C using complex impedance spectroscopy in a multianvil device. Mössbauer spectroscopy of each sample was carried out both before and after the electrical measurements to characterize the oxidation state of Fe in the almandine bearing garnets. Similar to the behavior of other ferromagnesian...
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Journal Article

Nudged elastic band calculations of the ( 4 H ) Si X hydrogarnet type defect in Mg 2 SiO 4 forsterite Available to Purchase

Brent T. Poe, Maria Grazia Perna
Published: 01 May 2023
American Mineralogist (2023) 108 (5): 959–967.
DOI: https://doi.org/10.2138/am-2022-8449
... conductivity anisotropy when investigated by AC methods such as impedance spectroscopy. The NEB method can also be used to examine more effective charge and mass transport processes that involve the dissociation of the hydrogarnet defect into more complex chemical species, which might involve similar hydrogen...
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View PDF for article title, Nudged elastic band calculations of the ( 4 H ) Si X hydrogarnet type defect in Mg 2 SiO 4 forsterite
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Journal Article

The electrical conductivity of albite feldspar: Implications for oceanic lower crustal sequences and subduction zones Available to Purchase

George M. Amulele, Anthony W. Lanati, Simon M. Clark
Published: 01 April 2022
American Mineralogist (2022) 107 (4): 614–624.
DOI: https://doi.org/10.2138/am-2021-7836
... using impedance spectroscopy were performed at a pressure of 1 GPa over a temperature range of 373–1273 K in a multi-anvil high-pressure apparatus. Experiments were carried out using different metal electrodes: molybdenum, nickel, and rhenium to vary the oxygen fugacity during the experiments. FTIR...
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View PDF for article title, The electrical conductivity of albite feldspar: Implications for oceanic lower crustal sequences and subduction zones
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