Articles | Volume 36, issue 6
https://doi.org/10.5194/ejm-36-985-2024
© Author(s) 2024. This work is distributed under
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the Creative Commons Attribution 4.0 License.
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https://doi.org/10.5194/ejm-36-985-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Li diffusion in plagioclase crystals and glasses – implications for timescales of geological processes
Florian Pohl
CORRESPONDING AUTHOR
Institute of Earth System Sciences, Leibniz University Hannover, Hanover, 30625, Germany
Harald Behrens
Institute of Earth System Sciences, Leibniz University Hannover, Hanover, 30625, Germany
Martin Oeser
Institute of Earth System Sciences, Leibniz University Hannover, Hanover, 30625, Germany
Felix Marxer
Institute of Earth System Sciences, Leibniz University Hannover, Hanover, 30625, Germany
Ralf Dohmen
Institute for Geology, Mineralogy and Geophysics, Ruhr University Bochum, Bochum, 44780, Germany
Related authors
Diego González-García, Florian Pohl, Felix Marxer, Stepan Krasheninnikov, Renat Almeev, and François Holtz
Eur. J. Mineral., 36, 623–640, https://doi.org/10.5194/ejm-36-623-2024, https://doi.org/10.5194/ejm-36-623-2024, 2024
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We studied the exchange of chemical elements by diffusion between magmas of tephritic and phonolitic composition from the Canary Islands, performing experiments at high pressure and high temperature with different amounts of added water. Our results characterize the way water and temperature affect the diffusion process, and we also find unexpectedly high mobility of aluminium, which may be related to its variable chemical bonding in highly alkaline melts.
Diego González-García, Florian Pohl, Felix Marxer, Stepan Krasheninnikov, Renat Almeev, and François Holtz
Eur. J. Mineral., 36, 623–640, https://doi.org/10.5194/ejm-36-623-2024, https://doi.org/10.5194/ejm-36-623-2024, 2024
Short summary
Short summary
We studied the exchange of chemical elements by diffusion between magmas of tephritic and phonolitic composition from the Canary Islands, performing experiments at high pressure and high temperature with different amounts of added water. Our results characterize the way water and temperature affect the diffusion process, and we also find unexpectedly high mobility of aluminium, which may be related to its variable chemical bonding in highly alkaline melts.
Christian R. Singer, Harald Behrens, Ingo Horn, Martin Oeser, Ralf Dohmen, and Stefan Weyer
Eur. J. Mineral., 35, 1009–1026, https://doi.org/10.5194/ejm-35-1009-2023, https://doi.org/10.5194/ejm-35-1009-2023, 2023
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Li is a critical element that is often enriched in pegmatites. To better understand the enrichment of Li in such systems, it is necessary to understand the underlying transport mechanisms. We performed experiments to investigate diffusion rates and exchange mechanisms of Li between a Li-rich and a Li-poor melt at high temperature and pressure. Our results indicate that fluxing elements do not increase the diffusivity of Li compared to a flux-free melt.
Martin Oeser, Ingo Horn, Ralf Dohmen, and Stefan Weyer
Eur. J. Mineral., 35, 813–830, https://doi.org/10.5194/ejm-35-813-2023, https://doi.org/10.5194/ejm-35-813-2023, 2023
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This study presents a new method designed to analyze micrometer-scale chemical and isotopic profiles in minerals, glasses, and other solids. The employed technique combines plasma mass spectrometers and a state-of-the-art femtosecond laser equipped with open-source software (LinuxCNC) that controls the movement of the laser beam. It allows for equably drilling into the sample surface, e.g., in order to measure chemically or isotopically zoned or heterogeneous materials at micrometer scales.
Xudong Wang, Tong Hou, Meng Wang, Chao Zhang, Zhaochong Zhang, Ronghao Pan, Felix Marxer, and Hongluo Zhang
Eur. J. Mineral., 33, 621–637, https://doi.org/10.5194/ejm-33-621-2021, https://doi.org/10.5194/ejm-33-621-2021, 2021
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In this paper we calibrate a new empirical clinopyroxene-only thermobarometer based on new models. The new models show satisfying performance in both calibration and the test dataset compared with previous thermobarometers. Our new thermobarometer has been tested on natural clinopyroxenes in the Icelandic eruptions. The results show good agreement with experiments. Hence, it can be widely used to elucidate magma storage conditions.
Related subject area
Experimental petrology
Experimental petrology constraints on kamafugitic magmas
Chrome incorporation in high-pressure Fe–Mg oxides
Magma storage conditions of Lascar andesites, central volcanic zone, Chile
Chemical interdiffusion between Na-series tephritic and phonolitic melts with different H2O content, temperature, and oxygen fugacity values
Re-equilibration of quartz inclusions in garnet
H2 mobility and redox control in open vs. closed hydrothermal oceanic systems – evidence from serpentinization experiments
A brief history of solid inclusion piezobarometry
Li–Na interdiffusion and diffusion-driven lithium isotope fractionation in pegmatitic melts
Depth profile analyses by femtosecond laser ablation (multicollector) inductively coupled plasma mass spectrometry for resolving chemical and isotopic gradients in minerals
A revised model for activity–composition relations in solid and molten FePt alloys and a preliminary model for characterization of oxygen fugacity in high-pressure experiments
Elasticity of mixtures and implications for piezobarometry of mixed-phase inclusions
In situ single-crystal X-ray diffraction of olivine inclusion in diamond from Shandong, China: implications for the depth of diamond formation
One-atmosphere high-temperature CO–CO2–SO2 gas-mixing furnace: design, operation, and applications
CO2 diffusion in dry and hydrous leucititic melt
Melting relations of Ca–Mg carbonates and trace element signature of carbonate melts up to 9 GPa – a proxy for melting of carbonated mantle lithologies
High-pressure homogenization of olivine-hosted CO2-rich melt inclusions in a piston cylinder: insight into the volatile content of primary mantle melts
Carbon-saturated COH fluids in the upper mantle: a review of high-pressure and high-temperature ex situ experiments
The influence of oxygen fugacity and chlorine on amphibole–liquid trace element partitioning at upper-mantle conditions
Effect of chlorine on water incorporation in magmatic amphibole: experimental constraints with a micro-Raman spectroscopy approach
A combined Fourier transform infrared and Cr K-edge X-ray absorption near-edge structure spectroscopy study of the substitution and diffusion of H in Cr-doped forsterite
Grain boundary diffusion and its relation to segregation of multiple elements in yttrium aluminum garnet
Melting relations of anhydrous olivine-free pyroxenite Px1 at 2 GPa
Breyite inclusions in diamond: experimental evidence for possible dual origin
Francesca Innocenzi, Isra S. Ezad, Sara Ronca, Samuele Agostini, Michele Lustrino, and Stephen F. Foley
Eur. J. Mineral., 36, 899–916, https://doi.org/10.5194/ejm-36-899-2024, https://doi.org/10.5194/ejm-36-899-2024, 2024
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Kamafugites are rare ultrabasic/basic K2O-rich rocks. High-pressure–high-temperature experiments on four samples from the known type localities (Italy, Brazil, Uganda) constrained their melting assemblage, unlike a classical peridotite. Clinopyroxene and phlogopite are the first near-liquidus phases. Olivine appears in two runs. The different abundances of the main phases and the variable contribution of apatite, oxides and titanite explain the variegated kamafugite geochemical features.
Alan B. Woodland, Katrin Schumann, Laura Uenver-Thiele, Kevin Rosbach, Tiziana Boffa Ballaran, Caterina Melai, and Elena Bykova
Eur. J. Mineral., 36, 845–862, https://doi.org/10.5194/ejm-36-845-2024, https://doi.org/10.5194/ejm-36-845-2024, 2024
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We experimentally investigated the behavior of chrome in high-pressure post-spinel oxide phases. Only minor amounts of Cr can be incorporated into Fe5O6. But there is full solid solution between Fe4O5 and Fe2Cr2O5 and Mg2Fe2O5 and Mg2Cr2O5, in spite of a phase transition occurring in the middle of the compositional range. Our results provide further constraints on the formation of such oxide phases in extraterrestrial materials and inclusions in natural diamonds.
André Stechern, Magdalena Blum-Oeste, Roman E. Botcharnikov, François Holtz, and Gerhard Wörner
Eur. J. Mineral., 36, 721–748, https://doi.org/10.5194/ejm-36-721-2024, https://doi.org/10.5194/ejm-36-721-2024, 2024
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Lascar volcano, located in northern Chile, is among the most active volcanoes of the Andes. Its activity culminated in the last major explosive eruption in April 1993. We carried out experiments at high temperatures (up to 1050 °C) and pressures (up to 5000 bar) in the lab, and we used a wide variety of geochemical methods to provide comprehensive constraints on the depth and temperature of the magma chamber beneath Lascar volcano.
Diego González-García, Florian Pohl, Felix Marxer, Stepan Krasheninnikov, Renat Almeev, and François Holtz
Eur. J. Mineral., 36, 623–640, https://doi.org/10.5194/ejm-36-623-2024, https://doi.org/10.5194/ejm-36-623-2024, 2024
Short summary
Short summary
We studied the exchange of chemical elements by diffusion between magmas of tephritic and phonolitic composition from the Canary Islands, performing experiments at high pressure and high temperature with different amounts of added water. Our results characterize the way water and temperature affect the diffusion process, and we also find unexpectedly high mobility of aluminium, which may be related to its variable chemical bonding in highly alkaline melts.
Benjamin A. Pummell and Jay B. Thomas
Eur. J. Mineral., 36, 581–597, https://doi.org/10.5194/ejm-36-581-2024, https://doi.org/10.5194/ejm-36-581-2024, 2024
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Mechanical interaction between quartz inclusions in garnet creates residual pressure in the inclusion used to calculate the pressure and temperature where the two minerals formed. We crystallised quartz and garnet at high pressure and temperature and then adjusted the experimental pressure to observe the interaction between the quartz inclusions and garnet host. The quartz and garnet adjust to the new experimental pressures, reset inclusion pressures, and no longer match entrapment conditions.
Colin Fauguerolles, Teddy Castelain, Johan Villeneuve, and Michel Pichavant
Eur. J. Mineral., 36, 555–579, https://doi.org/10.5194/ejm-36-555-2024, https://doi.org/10.5194/ejm-36-555-2024, 2024
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To explore the influence of the redox state of the environment on the serpentinization reaction, we have developed an original experimental setup. Reducing conditions, leading to the formation of serpentine and magnetite, and oxidizing conditions, leading to the formation of serpentine and hematite, are discussed in terms of analogues of low- and high-permeability hydrothermal systems, respectively. The influence of the redox on brucite stability and hydrogen production is also established.
Ross J. Angel, Matteo Alvaro, and Silvio Ferrero
Eur. J. Mineral., 36, 411–415, https://doi.org/10.5194/ejm-36-411-2024, https://doi.org/10.5194/ejm-36-411-2024, 2024
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Inclusions in natural rocks are an invaluable asset for geoscientists because they provide information about processes in the Earth's history that are otherwise hidden or subsequently overprinted. In this paper we review the development over the last 200 years of the concepts and methods to measure the remnant pressures in mineral inclusions and how they can be used to determine pressures and temperatures at which the inclusions were formed deep within the Earth.
Christian R. Singer, Harald Behrens, Ingo Horn, Martin Oeser, Ralf Dohmen, and Stefan Weyer
Eur. J. Mineral., 35, 1009–1026, https://doi.org/10.5194/ejm-35-1009-2023, https://doi.org/10.5194/ejm-35-1009-2023, 2023
Short summary
Short summary
Li is a critical element that is often enriched in pegmatites. To better understand the enrichment of Li in such systems, it is necessary to understand the underlying transport mechanisms. We performed experiments to investigate diffusion rates and exchange mechanisms of Li between a Li-rich and a Li-poor melt at high temperature and pressure. Our results indicate that fluxing elements do not increase the diffusivity of Li compared to a flux-free melt.
Martin Oeser, Ingo Horn, Ralf Dohmen, and Stefan Weyer
Eur. J. Mineral., 35, 813–830, https://doi.org/10.5194/ejm-35-813-2023, https://doi.org/10.5194/ejm-35-813-2023, 2023
Short summary
Short summary
This study presents a new method designed to analyze micrometer-scale chemical and isotopic profiles in minerals, glasses, and other solids. The employed technique combines plasma mass spectrometers and a state-of-the-art femtosecond laser equipped with open-source software (LinuxCNC) that controls the movement of the laser beam. It allows for equably drilling into the sample surface, e.g., in order to measure chemically or isotopically zoned or heterogeneous materials at micrometer scales.
Marc M. Hirschmann and Hongluo L. Zhang
Eur. J. Mineral., 35, 789–803, https://doi.org/10.5194/ejm-35-789-2023, https://doi.org/10.5194/ejm-35-789-2023, 2023
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We calibrate new models for the properties of solid and liquid FePt alloy. FePt alloy is used in experiments investigating the origin, differentiation, and evolution of planets to characterize oxygen fugacity. The new models facilitate use of FePt for more extreme conditions than has been possible previously. We also describe shortcomings in the present knowledge of FePt alloy properties and highlight strategies that could improve such knowledge.
Ross J. Angel, Mattia L. Mazzucchelli, Kira A. Musiyachenko, Fabrizio Nestola, and Matteo Alvaro
Eur. J. Mineral., 35, 461–478, https://doi.org/10.5194/ejm-35-461-2023, https://doi.org/10.5194/ejm-35-461-2023, 2023
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We have developed the thermodynamic theory of the properties of inclusions consisting of more than one phase, including inclusions containing solids plus a fluid. We present a software utility that enables for the first time the entrapment conditions of multiphase inclusions to be determined from the measurement of their internal pressure when that is measured in a laboratory.
Yanjuan Wang, Fabrizio Nestola, Huaikun Li, Zengqian Hou, Martha G. Pamato, Davide Novella, Alessandra Lorenzetti, Pia Antonietta Antignani, Paolo Cornale, Jacopo Nava, Guochen Dong, and Kai Qu
Eur. J. Mineral., 35, 361–372, https://doi.org/10.5194/ejm-35-361-2023, https://doi.org/10.5194/ejm-35-361-2023, 2023
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In this work we have applied the elastic geobarometry approach to a Chinese diamond in order to determine the depth of formation of an olivine-bearing diamond. Together with the temperature of residence at which the diamond resided in the mantle, we were able to discover that the diamond was formed at about 190 km depth. Beyond the geological meaning of our results, this work could be a reference paper for future works on Chinese diamonds using elastic geobarometry.
Shashank Prabha-Mohan, Kenneth T. Koga, Antoine Mathieu, Franck Pointud, and Diego F. Narvaez
Eur. J. Mineral., 35, 321–331, https://doi.org/10.5194/ejm-35-321-2023, https://doi.org/10.5194/ejm-35-321-2023, 2023
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This work presents an in-depth description of a new design for a high-temperature gas-mixing furnace using a mixture of CO–CO2–SO2. It has been designed and built with user safety in mind. The furnace can sustain temperatures of up to 1650 °C. This furnace sets itself apart with its size and unique quench mechanism. Crucially, the apparatus has the ability to change the gas mixture during an experiment. This feature allows the user to simulate natural environments, such as volcanoes.
Lennart Koch and Burkhard C. Schmidt
Eur. J. Mineral., 35, 117–132, https://doi.org/10.5194/ejm-35-117-2023, https://doi.org/10.5194/ejm-35-117-2023, 2023
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Volatile diffusivities in silicate melts control the nucleation and growth of bubbles in ascending magma. We investigated the diffusion of CO2 in an anhydrous and hydrous leucititic melt at high temperatures and high pressure. CO2 diffusion profiles were measured via attenuated total reflection Fourier transform infrared spectroscopy. CO2 diffusion increases with increasing temperature and water content. The data can be used to understand the CO2 degassing behaviour of leucititic melts.
Melanie J. Sieber, Max Wilke, Oona Appelt, Marcus Oelze, and Monika Koch-Müller
Eur. J. Mineral., 34, 411–424, https://doi.org/10.5194/ejm-34-411-2022, https://doi.org/10.5194/ejm-34-411-2022, 2022
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Carbonates reduce the melting point of the mantle, and carbonate melts produced in low-degree melting of a carbonated mantle are considered the precursor of CO2-rich magmas. We established experimentally the melting relations of carbonates up to 9 GPa, showing that Mg-carbonates melt incongruently to periclase and carbonate melt. The trace element signature of carbonate melts parental to kimberlites is approached by melting of Mg-rich carbonates.
Roxane Buso, Didier Laporte, Federica Schiavi, Nicolas Cluzel, and Claire Fonquernie
Eur. J. Mineral., 34, 325–349, https://doi.org/10.5194/ejm-34-325-2022, https://doi.org/10.5194/ejm-34-325-2022, 2022
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Magmas transport large amounts of CO2 from Earth's mantle into the atmosphere and thus contribute significantly to the global carbon cycle. We have developed an experimental method to homogenize at high pressure small liquid droplets trapped in magmatic crystals to gain access to the initial composition of the parental magma (major and volatile elements). With this technique, we show that magmas produced by melting of the subcontinental mantle contain several weight percent of CO2.
Carla Tiraboschi, Francesca Miozzi, and Simone Tumiati
Eur. J. Mineral., 34, 59–75, https://doi.org/10.5194/ejm-34-59-2022, https://doi.org/10.5194/ejm-34-59-2022, 2022
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This review provides an overview of ex situ carbon-saturated COH fluid experiments at upper-mantle conditions. Several authors experimentally investigated the effect of COH fluids. However, fluid composition is rarely tackled as a quantitative issue, and rather infrequently fluids are analyzed as the associated solid phases in the experimental assemblage. Recently, improved techniques have been proposed for analyses of COH fluids, leading to significant advancement in fluid characterization.
Enrico Cannaò, Massimo Tiepolo, Giulio Borghini, Antonio Langone, and Patrizia Fumagalli
Eur. J. Mineral., 34, 35–57, https://doi.org/10.5194/ejm-34-35-2022, https://doi.org/10.5194/ejm-34-35-2022, 2022
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Amphibole–liquid partitioning of elements of geological relevance is experimentally derived at conditions compatible with those of the Earth's upper mantle. Experiments are carried out at different oxygen fugacity conditions and variable Cl content in order to investigate their influence on the amphibole–liquid partition coefficients. Our results point to the capability of amphibole to act as filter for trace elements at upper-mantle conditions, oxidized conditions, and Cl-rich environments.
Enrico Cannaò, Federica Schiavi, Giulia Casiraghi, Massimo Tiepolo, and Patrizia Fumagalli
Eur. J. Mineral., 34, 19–34, https://doi.org/10.5194/ejm-34-19-2022, https://doi.org/10.5194/ejm-34-19-2022, 2022
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Detailed knowledge of the mechanisms ruling water incorporation in amphibole is essential to understand how much water can be fixed at upper-mantle conditions by this mineral. We provide the experimental evidence of the Cl effect on the oxo-substitution and the incorporation of water in amphibole. Finally, we highlight the versatility of confocal micro-Raman spectroscopy as an analytical tool to quantify water in amphibole.
Michael C. Jollands, Hugh St.C. O'Neill, Andrew J. Berry, Charles Le Losq, Camille Rivard, and Jörg Hermann
Eur. J. Mineral., 33, 113–138, https://doi.org/10.5194/ejm-33-113-2021, https://doi.org/10.5194/ejm-33-113-2021, 2021
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How, and how fast, does hydrogen move through crystals? We consider this question by adding hydrogen, by diffusion, to synthetic crystals of olivine doped with trace amounts of chromium. Even in a highly simplified system, the behaviour of hydrogen is complex. Hydrogen can move into and through the crystal using various pathways (different defects within the crystal) and hop between these pathways too.
Joana Polednia, Ralf Dohmen, and Katharina Marquardt
Eur. J. Mineral., 32, 675–696, https://doi.org/10.5194/ejm-32-675-2020, https://doi.org/10.5194/ejm-32-675-2020, 2020
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Grain boundary diffusion is orders of magnitude faster compared to volume diffusion. We studied this fast transport process in a well-defined garnet grain boundary. State-of-the-art microscopy was used for quantification. A dedicated numerical diffusion model shows that iron diffusion requires the operation of two diffusion modes, one fast, one slow. We conclude that impurity bulk diffusion in garnet aggregates is always dominated by grain boundary diffusion.
Giulio Borghini and Patrizia Fumagalli
Eur. J. Mineral., 32, 251–264, https://doi.org/10.5194/ejm-32-251-2020, https://doi.org/10.5194/ejm-32-251-2020, 2020
Alan B. Woodland, Andrei V. Girnis, Vadim K. Bulatov, Gerhard P. Brey, and Heidi E. Höfer
Eur. J. Mineral., 32, 171–185, https://doi.org/10.5194/ejm-32-171-2020, https://doi.org/10.5194/ejm-32-171-2020, 2020
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We experimentally explored direct entrapment of breyite (CaSiO3) by diamond at upper-mantle conditions in a model subducted sediment rather than formation by retrogression of CaSiO3 perovskite, implying a deeper origin. Anhydrous low-T melting of CaCO3+SiO2 precludes breyite formation. Under hydrous conditions, reduction of melt results in graphite with breyite. Thus, breyite inclusions in natural diamond may form from aragonite + coesite or carbonate melt at 6–8 GPa via reduction with water.
Cited articles
Audétat, A., Zhang, L., and Ni, H.: Copper and Li diffusion in plagioclase, pyroxenes, olivine and apatite, and consequences for the composition of melt inclusions, Geochim. Cosmochim. Ac., 243, 99–115, https://doi.org/10.1016/j.gca.2018.09.016, 2018.
Behrens, H.: Na and Ca tracer diffusion in plagioclase glasses and supercooled melts, Chem. Geol., 96, 267–275, 1992.
Behrens, H.: Hydrogen defects in feldspars: defect properties and implications for water solubility in feldspar, Phys. Chem. Miner., 48, 8, https://doi.org/10.1007/s00269-020-01128-0, 2021a.
Behrens, H.: Hydrogen defects in feldspars: kinetics of D/H isotope exchange and diffusion of hydrogen species in alkali feldspars, Phys. Chem. Miner., 48, 1–23, 2021b.
Behrens, H.: Hydrogen defects in feldspars: alkali-supported dehydrogenation of sanidine, Phys. Chem. Miner., 50, 18, https://doi.org/10.1007/s00269-023-01242-9, 2023.
Behrens, H., Johannes, W., and Schmalzried, H.: On the Mechanisms of Cation Diffusion Processes in Ternary Feldspars, Phys. Chem. Miner., 17, 62–78, https://doi.org/10.1007/BF00209227, 1990.
Berndt, J., Liebske, C., Holtz, F. o., Freise, M., Nowak, M., Ziegenbein, D., Hurkuck, W., and Koepke, J.: A combined rapid-quench and H2-membrane setup for internally heated pressure vessels: Description and application for water solubility in basaltic melts, Am. Mineral., 87, 1717–1726, 2002.
Chakraborty, S. and Dohmen, R.: Diffusion chronometry of volcanic rocks: looking backward and forward, B. Volcanol., 84, 1–9, 2022.
Charlier, B. L. A., Morgan, D. J., Wilson, C. J. N., Wooden, J. L., Allan, A. S. R., and Baker, J. A.: Lithium concentration gradients in feldspar and quartz record the final minutes of magma ascent in an explosive supereruption, Earth Planet. Sc. Lett., 319–320, 218–227, https://doi.org/10.1016/j.epsl.2011.12.016, 2012.
Cherniak, D. J.: Silicon self-diffusion in single-crystal natural quartz and feldspar, Earth Planet. Sc. Lett., 214, 655–668, https://doi.org/10.1016/S0012-821X(03)00394-7, 2003.
Cherniak, D. J.: Cation Diffusion in Feldspars, Rev. Mineral. Geochem., 72, 691–733, https://doi.org/10.2138/rmg.2010.72.15, 2010.
Costa, F., Dohmen, R., and Chakraborty, S.: Time scales of magmatic processes from modeling the zoning patterns of crystals, Rev. Mineral. Geochem., 69, 545–594, 2008.
Crank, J.: The mathematics of diffusion, 2nd edn., reprinted, Oxford science publications, Oxford University Press, Oxford, ISBN 0198533446, 1975.
Cunningham, G., Henderson, P., Lowry, R., Nolan, J., Reed, S., and Long, J.: Lithium diffusion in silicate melts, Earth Planet. Sc. Lett., 65, 203–205, 1983.
Dohmen, R., Kasemann, S. A., Coogan, L., and Chakraborty, S.: Diffusion of Li in olivine. Part I: Experimental observations and a multi species diffusion model, Geochim. Cosmochim. Ac., 74, 274–292, https://doi.org/10.1016/j.gca.2009.10.016, 2010.
Giletti, B. J. and Shanahan, T. M.: Alkali diffusion in plagioclase feldspar, Chem. Geol., 139, 3–20, https://doi.org/10.1016/S0009-2541(97)00026-0, 1997.
Giuffrida, M., Viccaro, M., and Ottolini, L.: Ultrafast syn-eruptive degassing and ascent trigger high-energy basic eruptions, Sci. Rep., 8, 147, https://doi.org/10.1038/s41598-017-18580-8, 2018.
Grove, T. L., Baker, M. B., and Kinzler, R. J.: Coupled CaAl-NaSi diffusion in plagioclase feldspar: Experiments and applications to cooling rate speedometry, Geochim. Cosmochim. Ac., 48, 2113–2121, https://doi.org/10.1016/0016-7037(84)90391-0, 1984.
Holycross, M., Watson, E., Richter, F., and Villeneuve, J.: Diffusive fractionation of Li isotopes in wet, highly silicic melts, Geochemical Perspectives Letters, 6, 39–42, 2018.
Horn, I. and von Blanckenburg, F.: Investigation on elemental and isotopic fractionation during 196 nm femtosecond laser ablation multiple collector inductively coupled plasma mass spectrometry, Spectrochim. Acta B, 62, 410–422, 2007.
Horn, I., von Blanckenburg, F., Schoenberg, R., Steinhoefel, G., and Markl, G.: In situ iron isotope ratio determination using UV-femtosecond laser ablation with application to hydrothermal ore formation processes, Geochim. Cosmochim. Ac., 70, 3677–3688, 2006.
Hummel, W. and Arndt, J.: Variation of viscosity with temperature and composition in the plagioclase system, Contrib. Mineral. Petr., 90, 83–92, 1985.
Imre, A., Staesche, H., Voss, S., Ingram, M. D., Funke, K., and Mehrer, H.: Pressure-dependent diffusion coefficients and haven ratios in cation-conducting glasses, J. Phys. Chem. B, 111, 5301–5307, 2007.
Jambon, A. and Carron, J.-P.: Diffusion of Na, K, Rb and Cs in glasses of albite and orthoclase composition, Geochim. Cosmochim. Ac., 40, 897–903, 1976.
Jambon, A. and Semet, M. P.: Lithium diffusion in silicate glasses of albite, orthoclase, and obsidian composition: an ion-microprobe determination, Earth Planet. Sc. Lett., 37, 445–450, 1978.
Jochum, K. P., Nohl, U., Rothbarth, N., Schwager, B., Stoll, B., and Weis, U.: Geostandards and Geoanalytical Research Bibliographic Review 2011, Geostand. Geoanal. Res., 36, 415–419, https://doi.org/10.1111/j.1751-908X.2012.00221.x, 2012.
Kasper, R. B.: Cation and oxygen diffusion in albite, PHD Dissertation, Brown University, ISBN 9798660873171, 1975.
Lasaga, A. C.: Multicomponent exchange and diffusion in silicates, Geochim. Cosmochim. Ac., 43, 455–469, 1979.
Lin, T.-H. and Yund, R.: Potassium and sodium self-diffusion in alkali feldspar, Contrib. Mineral. Petr., 34, 177–184, 1972.
Lowry, R., Reed, S., Nolan, J., Henderson, P., and Long, J.: Lithium tracer-diffusion in an alkali-basaltic melt – An ion-microprobe determination, Earth Planet. Sc. Lett., 53, 36–40, 1981.
Matthews, W., Linnen, R. L., and Guo, Q.: A filler-rod technique for controlling redox conditions in cold-seal pressure vessels, Am. Mineral., 88, 701–707, 2003.
Mehrer, H.: Diffusion in Solids, Springer Series in Solid-State Sciences, Springer Science & Business Media, ISBN 354071488X, 2007.
Neukampf, J., Ellis, B. S., Laurent, O., Steinmann, L., Ubide, T., Oeser, M., Magna, T., Weyer, S., and Bachmann, O.: Time scales of syneruptive volatile loss in silicic magmas quantified by Li isotopes, Geology, 49, 125–129, 2021.
Richter, F. M., Liang, Y., and Davis, A. M.: Isotope fractionation by diffusion in molten oxides, Geochim. Cosmochim. Ac., 63, 2853–2861, 1999.
Richter, F., Watson, B., Chaussidon, M., Mendybaev, R., and Ruscitto, D.: Lithium isotope fractionation by diffusion in minerals. Part 1: Pyroxenes, Geochim. Cosmochim. Ac., 126, 352–370, 2014.
Richter, F., Chaussidon, M., Bruce Watson, E., Mendybaev, R., and Homolova, V.: Lithium isotope fractionation by diffusion in minerals Part 2: Olivine, Geochim. Cosmochim. Ac., 219, 124–142, https://doi.org/10.1016/j.gca.2017.09.001, 2017.
Ryan, M. J. and Smedley, S. I.: The effect of pressure on fast ion conductivity in glasses, J. Non-Cryst. Solids, 65, 29–37, 1984.
Schäffer, A.-K., Petrishcheva, E., Habler, G., Abart, R., Rhede, D., and Giester, G.: Sodium-potassium interdiffusion in potassium-rich alkali feldspar II: Composition-and temperature-dependence obtained from cation exchange experiments, Am. J. Sci., 314, 1300–1318, 2014.
Shannon, R.: Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides, Acta Crystallogr. A, 32, 751–767, https://doi.org/10.1107/S0567739476001551, 1976.
Singer, C. R., Behrens, H., Horn, I., Oeser, M., Dohmen, R., and Weyer, S.: Li–Na interdiffusion and diffusion-driven lithium isotope fractionation in pegmatitic melts, Eur. J. Mineral., 35, 1009–1026, https://doi.org/10.5194/ejm-35-1009-2023, 2023.
Spallanzani, R., Koga, K. T., Cichy, S. B., Wiedenbeck, M., Schmidt, B. C., Oelze, M., and Wilke, M.: Lithium and boron diffusivity and isotopic fractionation in hydrated rhyolitic melts, Contrib. Mineral. Petr., 177, 74, https://doi.org/10.1007/s00410-022-01937-2, 2022.
Steinmann, L. K., Oeser, M., Horn, I., Seitz, H.-M., and Weyer, S.: In situ high-precision lithium isotope analyses at low concentration levels with femtosecond-LA-MC-ICP-MS, J. Anal. Atom. Spectrom., 34, 1447–1458, 2019.
Turner, S. and Costa, F.: Measuring timescales of magmatic evolution, Elements, 3, 267–272, 2007.
Van Orman, J. A. and Krawczynski, M. J.: Theoretical constraints on the isotope effect for diffusion in minerals, Geochim. Cosmochim. Ac., 164, 365–381, 2015.
Vogt, K., Dohmen, R., and Chakraborty, S.: Fe-Mg diffusion in spinel: New experimental data and a point defect model, Am. Mineral., 100, 2112–2122, 2015.
Short summary
The growing interest in lithium (Li) diffusion for the determination of timescales of magmatic events increases the necessity to better understand Li diffusion in common mineral phases. In this context we analyzed Li diffusion in plagioclase, one of the most common mineral phases. Our study is the first to confirm two diffusion mechanisms for Li in plagioclase, and our results indicate timescales derived from Li diffusion data in previous studies were underestimated by a factor of up to 100.
The growing interest in lithium (Li) diffusion for the determination of timescales of magmatic...
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