Spectral induced polarization (SIP) response of mine tailings

On the pore water chemistry effect on spectral induced polarization measurements in the presence of pyrite

“…The leaky-capacitive effect (or "imperfect" surface polarization) and the mineralogical transformations on the external lattice of the metallic mineral surface (e.g., the formation of Fe-oxy-hydroxy-sulphate phases) as part of the oxidative-weathering process, have been found to diminish the magnitude and broaden the peak of the laboratory-measured SIP response for pyrrhotite-sand mixtures (Placencia-Gómez et al, 2013;Placencia-Gómez and Slater, 2014) and mine waste materials (tailings) containing pyrite and pyrrhotite (Campbell and Horton, 2001;Placencia-Gómez et al, 2015). This is likely accompanied by a shift of the polarization peak towards lower frequencies as suggested by the model of Wong (Fig.…”

“…These include investigations on biogeochemical transformations (FloresOrozco et al, 2011;Ntarlagiannis et al, 2005;Personna et al, 2008;Slater et al, 2007;Williams et al, 2005Williams et al, , 2009, oxidation-reduction (redox) reactions (Hubbard et al, 2014;Placencia-Gómez et al, 2013), mine tailings and acid mine drainage characterization (Campbell and Horton, 2001;Placencia-Gómez et al, 2015;Vanhala et al, 2005;Yuval and Oldenburg, 1996), monitoring of reactive iron barrier performance (Slater et al, , 2006Wu et al, 2005); and characterization of the polarization properties of different metal minerals (Abdel Aal et al, 2014;Gurin et al, 2013Gurin et al, , 2015Zhdanov et al, 2012) and nanoparticles (Joyce et al, 2012;Flores-Orozco et al, 2015). Such studies mainly focus on the role of the metal content (total weight or volume fraction percentage) and physical (textural) properties such as the metallic particle grain size and surface area on the spectral induced polarization (SIP) response.…”

Geophysical Exploration of a Historical Stamp Mill Dump for the Volume Estimation of Valuable Residues

“…The phase signal was significantly higher for the clayey silt material than for the sandy material. From previous lab investigations (Hupfer et al, 2016) and other literature (Pelton et al, 1978;Campbell and Fitterman, 2000;Placencia-Gomez et al, 2015) it is known that with increasing metal content the phase effect increases. According to Kuhn and Meima (2019) the highest metal content was found in the clayey silt layer, which is in accordance with our findings.…”

Using Geoelectrical Imaging to Recognize Zn-Pb Post-Mining Waste Deposits

“…De Villiers et al [29] used the abovementioned method in conjunction with ERT to map the extent of the acidic water. Placencia-Gomez et al [30] suggested the sensitivity of the spectral induced polarization method (SIP) method to discriminate AMD discharges from reactive oxidation zones in tailings.…”