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Dr. Alexander Gysi

Publications

(See Curriculum Vitae for more details)

  1. 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.
  2. 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.
  3. 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
  4. 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.
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. McLemore, V., Gysi, A. P. (2023) Critical Minerals in New Mexico. Earth Matters 23, New Mexico Bureau of Geology and Mineral Resources.
  12. 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.
  13. 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
  14. 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.
  15. 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.
  16. 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.
  17. 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
  18. Gysi, A. P., Mei, Y., Driesner, T. (2020). Advances in numerical simulations of hydrothermal ore forming processes. Geofluids, (open access).
  19. 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.
  20. 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.
  21. 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
  22. 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).
  23. 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)
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
  32. 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
  33. 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
  34. 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
  35. 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

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