
Dr. Alexander Gysi
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Publications
(See Curriculum Vitae for more details)
- Gysi, A. P., Hurtig, N. C., Han, H. J., Kindall, E. C., Guo, X., Kulik, D. A., & Miron, G. D. (in press). Reaction calorimetry and structural crystal properties of non-ideal binary rhabdophane solid solutions (Ce1−xREExPO4·nH2O). Geochimica et Cosmochimica Acta.
- Figueroa Penarrieta*, Y., & Gysi, A.P. (in press). Hydrothermal solution calorimetry in acidic aqueous solutions and revisiting the standard partial molal thermodynamic properties of Nd3+ from 25 to 300 °C. Geochimica et Cosmochimica Acta.
- Gysi, A.P., Hurtig, N.C., and Waters, L.E., eds., 2024, 2024 Hydrothermal Geochemistry and Critical Minerals MeetingAbstracts: New Mexico Bureau of Geology and Mineral Resources Bulletin 166, 90 p., https://doi.org/10.58799/B-166
- Han, J.H., & Gysi, A.P. (in press) UV-Vis spectrophotometric determination of rare earth elements (REE) speciation at near-neutral to alkaline pH. Part I: m-cresol purple properties from 25-75 °C and Er hydrolysis. Dalton Transactions.
- Hurtig, N. C., Gysi, A. P., Smith-Schmitz, S. E., & Harlov, D. (in press). Raman spectroscopic study of anhydrous and hydrous REE phosphates, oxides, and hydroxides. Dalton Transactions 53, 9964.
- Hurtig N.C., Gysi A.P., Monecke T., Petersen S., Hannington M.D. (2024) Tellurium transport and enrichment in volcanogenic massive sulde deposits: Numerical simulations of the evolution of vent uids and comparison to the composition of modern seaoor suldes. Economic Geology 119, 829851.
- Pan, R., Gysi, A. P., Miron, G. D., & Zhu, C. (2024). Optimized thermodynamic propertiesof REE aqueous species (REE3+ and REEOH2+) and experimental database for modeling the solubility of REE phosphate minerals (monazite, xenotime, and rhabdophane) from 25 to 300 °C. Chemical Geology, 643, 121817.
- Pan, R., Gysi, A. P., Migdisov, A., Gong, L., Lu, P., & Zhu, C. (2024). Linear Correlations of Gibbs Free Energy of REE Phosphates (Monazite, Xenotime, and Rhabdophane) and Internally Consistent Binary Mixing Properties. Minerals, 14(3), 305.
- Lu, P., Apps, J., Zhang, G., Gysi, A.P., Zhu, C. (2024) Knowledge gaps and research needs for modeling CO2 mineralization in the basalt-CO2-water system: A review of laboratory experiments. Earth-Sci. Rev. 254, 104813.
- Gysi, A.P., Hurtig, N.C., Pan, R., Miron, G.D., and Kulik, D.A., 2023, MINES thermodynamic database, New Mexico Bureau of Geology and Mineral Resources, version 23.
- McLemore, V., Gysi, A. P. (2023) Critical Minerals in New Mexico. Earth Matters 23, New Mexico Bureau of Geology and Mineral Resources.
- Payne* M., Gysi A.P., Hurtig N.C. (2023) Hydrothermal fluorite solubility experiments and mobility of REE in acidic to alkaline solutions from 100 to 250 °C. Chemical Geology 617, 121256.
- Chappell* J.C., Gysi A.P., Monecke T., Chang Z. (2023) Experimental apatite-fluid interaction and partitioning of rare earth elements at 150 and 250 °C. American Mineralogist 108, 1409--1420
- Pauly* C., Gysi A.P., Pfaff K., Merkel I. (2021) Beryl as indicator of metasomatic processes in the California Blue Mine topaz-beryl pegmatite and associated miarolitic pockets. Lithos 404-405, 106485.
- Gysi, A. P., Harlov, D. E. (2021). Hydrothermal solubility of TbPO4, HoPO4, TmPO4, and LuPO4 xenotime endmembers at pH of 2 and temperatures between 100 and 250 °C. Chemical Geology 567, 120072.
- Perry*, E., Gysi, A. P. (2020). Hydrothermal calcite-fluid REE partitioning experiments at 200 °C and saturated water vapor pressure. Geochimica et Cosmochimica Acta, 286, 177–197.
- Van Hoozen*, C. J., Gysi, A. P., Harlov, D. E. (2020). The solubility of monazite (LaPO4, PrPO4, NdPO4, and EuPO4) endmembers in aqueous solutions from 100 to 250 °C. Geochimica et Cosmochimica Acta, 280, 302–316. https://doi.org/10.1016/j.gca.2020.04.019
- Gysi, A. P., Mei, Y., Driesner, T. (2020). Advances in numerical simulations of hydrothermal ore forming processes. Geofluids, (open access).
- Alford*, L. Gysi, A. P., Hurtig, N. C., Monecke, T., Pfaff, K. (2020). Porphyry-related polymetallic Au-Ag vein deposit in the Central City district, Colorado: Mineral paragenesis and pyrite trace element chemistry. Ore Geology Reviews 119, 103295.
- Gysi, A. P., Harlov, D., Miron, G. D. (2018). The solubility of monazite (CePO4), SmPO4, and GdPO4 in aqueous solutions from 100 to 250 °C. Geochimica et Cosmochimica Acta, 242, 143–164.
- Perry*, E., Gysi, A.P. (2018) Rare earth elements in mineral deposits: speciation in hydrothermal fluids and partitioning in calcite. Geofluids, (open access). https://doi.org/10.1155/2018/5382480
- Pierre* S., Gysi A.P., Monecke, T. (2018) Fluid chemistry of mid-ocean ridge hydrothermal vents: A comparison between numerical modeling and vent geochemical data. Geofluids, 389379 (open access).
- Perry* E., Gysi A.P. (2018) Rare Earth Elements in Mineral Deposits: Speciation in Hydrothermal Fluids and Partitioning in Calcite. Geofluids. https://doi.org/10.1155/2018/5382480 (open access)
- Gysi, A.P. (2017) Numerical simulations of CO2 sequestration in basaltic rock formations: challenges for optimizing mineral-fluid reactions. Pure and Applied Chemistry, https://doi.org/10.1515/pac-2016-1016
- Gysi, A.P., Williams-Jones, A.E., Collins, P., 2016, Lithogeochemical vectors for hydrothermal processes in the Strange Lake peralkaline granitic REE-Zr-Nb deposit. Economic Geology, 111, 1241-1276. http://dx.doi.org/10.2113/econgeo.111.5.1241
- Gysi, A.P., Harlov, D., Costa Filho, D., Williams-Jones, A.E., 2016, Experimental determination of the high temperature heat capacity of a natural xenotime-(Y) solid solution and synthetic DyPO4 and ErPO4 endmembers. Thermochimica Acta, 627-629, 61-67. http://dx.doi.org/10.1016/j.tca.2016.01.016
- Gysi, A.P., Williams-Jones, A.E., Harlov, D., 2015, The solubility of xenotime-(Y) and other HREE phosphates (DyPO4, ErPO4 and YbPO4) in aqueous solutions from 100 to 250°C and psat. Chemical Geology, 401, 83-95. http://dx.doi.org/10.1016/j.chemgeo.2015.02.023
- Gysi, A.P., Williams-Jones, A.E., 2015, The thermodynamic properties of bastnaesite-(Ce) and parisite-(Ce). Chemical Geology, 21, 87-101. http://dx.doi.org/10.1016/j.chemgeo.2014.11.001
- Gysi, A.P., Williams-Jones A.E., 2013, Hydrothermal mobilization of pegmatite-hosted Zr and REE at Strange Lake, Canada: A reaction path model. Geochimica et Cosmochimica Acta, 122, 324-352. https://doi.org/10.1016/j.gca.2013.08.031
- Gysi, A.P., Stefánsson A., 2012, CO2-water-basalt interaction. Low temperature experiments and implications for CO2 sequestration into basalts. Geochimica et Cosmochimica Acta, 81, 129-152. http://dx.doi.org/10.1016/j.gca.2011.12.012
- Gysi, A.P., Stefánsson A., 2012, Experiments and geochemical modeling of CO2 sequestration during hydrothermal basalt alteration. Chemical Geology, 306-307, 10-28. http://dx.doi.org/10.1016/j.chemgeo.2012.02.016
- Gysi, A.P., Stefánsson A., 2012, Mineralogical aspects of CO2 sequestration during hydrothermal basalt alteration – An experimental study at 75 to 250 °C and elevated pCO2. Chemical Geology, 306-307, 146-159. http://dx.doi.org/10.1016/j.chemgeo.2012.03.006
- Gysi, A.P., Stefánsson A., 2011, CO2-water-basalt interaction. Numerical simulation of low temperature CO2 sequestration into basalts. Geochimica et Cosmochimica Acta, 75, 4728-4751. http://dx.doi.org/10.1016/j.gca.2011.05.037
- Gysi, A.P., Jagoutz, O., Schmidt, M.W., Targuisti, K., 2011, Petrogenesis of pyroxenites and melt infiltrations in the ultramafic complex of Beni Bousera, northern Morocco. Journal of Petrology, 22, 1679-1735. https://doi.org/10.1093/petrology/egr026
- Gysi, A.P., Stefánsson A., 2008, Numerical modeling of CO2-water-basalt interaction. Mineralogical Magazine, 72, 55-59. https://doi.org/10.1180/minmag.2008.072.1.55
(*Students advised)