Clustering and interfacial segregation of radiogenic Pb in a mineral host – inclusion system Tracing two-stage Pb and trace element mobility in monazite inclusions in rutile
Accessory minerals like zircon, rutile and monazite are routinely studied to inform about the timing and nature of geological processes. These studies are underpinned by our understanding of the transfer processes of trace elements and the assumption that the isotopic systems remain undisturbed. How...
Published in: | American Mineralogist |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2024
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Online Access: | https://hal.science/hal-04356359 https://hal.science/hal-04356359/document https://hal.science/hal-04356359/file/9085VerbernePreprint.pdf https://doi.org/10.2138/am-2023-9085 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Rutile Monazite Pb mobility Atom Probe Tomography [SDU.STU.MI]Sciences of the Universe [physics]/Earth Sciences/Mineralogy [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology |
spellingShingle |
Rutile Monazite Pb mobility Atom Probe Tomography [SDU.STU.MI]Sciences of the Universe [physics]/Earth Sciences/Mineralogy [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology Verberne, R. Reddy, S. Fougerouse, D. Seydoux-Guillaume, Anne-Magali Saxey, D. Rickard, W. Quadir, Z. Clark, C. Clustering and interfacial segregation of radiogenic Pb in a mineral host – inclusion system Tracing two-stage Pb and trace element mobility in monazite inclusions in rutile |
topic_facet |
Rutile Monazite Pb mobility Atom Probe Tomography [SDU.STU.MI]Sciences of the Universe [physics]/Earth Sciences/Mineralogy [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology |
description |
Accessory minerals like zircon, rutile and monazite are routinely studied to inform about the timing and nature of geological processes. These studies are underpinned by our understanding of the transfer processes of trace elements and the assumption that the isotopic systems remain undisturbed. However, the presence of microstructures or Pb-bearing phases in minerals can lead to the alteration of the Pb isotopic composition. To gain insight into the relationship between Pb isotopic alterations from inclusions and microstructures, this study focused on inclusions from an ultra-high temperature metamorphic rutile.The studied inclusions are submicron monazites, a common mineral rich in Pb but normally not present in rutile. The sample is sourced from Mt. Hardy, Napier Complex, East Antarctica, an ultra-high temperature (UHT) metamorphic terrane. By applying correlative analytical techniques including electron backscatter diffraction mapping, transmission electron microscopy (TEM), and atom probe tomography, it is shown monazite inclusions are often in contact with low-angle boundaries and yield no preferred orientation. TEM shows the monazite core has a mottled texture due to the presence of radiation damage and nanoclusters associated with the radiation damage defects that are rich in U, Pb, and Ca. Some monazites exhibit a core-rim structure. The rim yields clusters composed of Ca- and Li-phosphate that enclose Pb nanoclusters that are only present in small amounts compared to the core, with Pb likely diffused into the rutile-monazite interface. These textures are the result of two-stages of Pb mobility. Initial Pb segregation was driven by volume diffusion during UHT metamorphism (2500 Ma). The second stage is a stress-induced recrystallization during exhumation, leading to recrystallization of the monazite rim and trace element transport. The isotopic signature of Pb trapped within the rutile-monazite interface constrains the timing of Pb mobility to c. 550 Ma. |
author2 |
Centre for Star and Planet Formation Copenhagen University of Copenhagen = Københavns Universitet (UCPH) School of Earth and Planetary Sciences Perth Curtin University Perth Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE) École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Verberne, R. Reddy, S. Fougerouse, D. Seydoux-Guillaume, Anne-Magali Saxey, D. Rickard, W. Quadir, Z. Clark, C. |
author_facet |
Verberne, R. Reddy, S. Fougerouse, D. Seydoux-Guillaume, Anne-Magali Saxey, D. Rickard, W. Quadir, Z. Clark, C. |
author_sort |
Verberne, R. |
title |
Clustering and interfacial segregation of radiogenic Pb in a mineral host – inclusion system Tracing two-stage Pb and trace element mobility in monazite inclusions in rutile |
title_short |
Clustering and interfacial segregation of radiogenic Pb in a mineral host – inclusion system Tracing two-stage Pb and trace element mobility in monazite inclusions in rutile |
title_full |
Clustering and interfacial segregation of radiogenic Pb in a mineral host – inclusion system Tracing two-stage Pb and trace element mobility in monazite inclusions in rutile |
title_fullStr |
Clustering and interfacial segregation of radiogenic Pb in a mineral host – inclusion system Tracing two-stage Pb and trace element mobility in monazite inclusions in rutile |
title_full_unstemmed |
Clustering and interfacial segregation of radiogenic Pb in a mineral host – inclusion system Tracing two-stage Pb and trace element mobility in monazite inclusions in rutile |
title_sort |
clustering and interfacial segregation of radiogenic pb in a mineral host – inclusion system tracing two-stage pb and trace element mobility in monazite inclusions in rutile |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://hal.science/hal-04356359 https://hal.science/hal-04356359/document https://hal.science/hal-04356359/file/9085VerbernePreprint.pdf https://doi.org/10.2138/am-2023-9085 |
long_lat |
ENVELOPE(-58.440,-58.440,-62.167,-62.167) |
geographic |
East Antarctica Napier |
geographic_facet |
East Antarctica Napier |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
ISSN: 0003-004X EISSN: 1945-3027 The American Mineralogist https://hal.science/hal-04356359 The American Mineralogist, In press, ⟨10.2138/am-2023-9085⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.2138/am-2023-9085 hal-04356359 https://hal.science/hal-04356359 https://hal.science/hal-04356359/document https://hal.science/hal-04356359/file/9085VerbernePreprint.pdf doi:10.2138/am-2023-9085 |
op_doi |
https://doi.org/10.2138/am-2023-9085 |
container_title |
American Mineralogist |
_version_ |
1790594650135855104 |
spelling |
ftccsdartic:oai:HAL:hal-04356359v1 2024-02-11T09:58:51+01:00 Clustering and interfacial segregation of radiogenic Pb in a mineral host – inclusion system Tracing two-stage Pb and trace element mobility in monazite inclusions in rutile Verberne, R. Reddy, S. Fougerouse, D. Seydoux-Guillaume, Anne-Magali Saxey, D. Rickard, W. Quadir, Z. Clark, C. Centre for Star and Planet Formation Copenhagen University of Copenhagen = Københavns Universitet (UCPH) School of Earth and Planetary Sciences Perth Curtin University Perth Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE) École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS) 2024-01-01 https://hal.science/hal-04356359 https://hal.science/hal-04356359/document https://hal.science/hal-04356359/file/9085VerbernePreprint.pdf https://doi.org/10.2138/am-2023-9085 en eng HAL CCSD Mineralogical Society of America info:eu-repo/semantics/altIdentifier/doi/10.2138/am-2023-9085 hal-04356359 https://hal.science/hal-04356359 https://hal.science/hal-04356359/document https://hal.science/hal-04356359/file/9085VerbernePreprint.pdf doi:10.2138/am-2023-9085 ISSN: 0003-004X EISSN: 1945-3027 The American Mineralogist https://hal.science/hal-04356359 The American Mineralogist, In press, ⟨10.2138/am-2023-9085⟩ Rutile Monazite Pb mobility Atom Probe Tomography [SDU.STU.MI]Sciences of the Universe [physics]/Earth Sciences/Mineralogy [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology info:eu-repo/semantics/article Journal articles 2024 ftccsdartic https://doi.org/10.2138/am-2023-9085 2024-01-13T23:44:36Z Accessory minerals like zircon, rutile and monazite are routinely studied to inform about the timing and nature of geological processes. These studies are underpinned by our understanding of the transfer processes of trace elements and the assumption that the isotopic systems remain undisturbed. However, the presence of microstructures or Pb-bearing phases in minerals can lead to the alteration of the Pb isotopic composition. To gain insight into the relationship between Pb isotopic alterations from inclusions and microstructures, this study focused on inclusions from an ultra-high temperature metamorphic rutile.The studied inclusions are submicron monazites, a common mineral rich in Pb but normally not present in rutile. The sample is sourced from Mt. Hardy, Napier Complex, East Antarctica, an ultra-high temperature (UHT) metamorphic terrane. By applying correlative analytical techniques including electron backscatter diffraction mapping, transmission electron microscopy (TEM), and atom probe tomography, it is shown monazite inclusions are often in contact with low-angle boundaries and yield no preferred orientation. TEM shows the monazite core has a mottled texture due to the presence of radiation damage and nanoclusters associated with the radiation damage defects that are rich in U, Pb, and Ca. Some monazites exhibit a core-rim structure. The rim yields clusters composed of Ca- and Li-phosphate that enclose Pb nanoclusters that are only present in small amounts compared to the core, with Pb likely diffused into the rutile-monazite interface. These textures are the result of two-stages of Pb mobility. Initial Pb segregation was driven by volume diffusion during UHT metamorphism (2500 Ma). The second stage is a stress-induced recrystallization during exhumation, leading to recrystallization of the monazite rim and trace element transport. The isotopic signature of Pb trapped within the rutile-monazite interface constrains the timing of Pb mobility to c. 550 Ma. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) East Antarctica Napier ENVELOPE(-58.440,-58.440,-62.167,-62.167) American Mineralogist |