Roger H. Mitchell

Lakehead University

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Anton R. Chakhmouradian

University of Manitoba

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Р. П. Лиферович

Lakehead University

R. Garth Platt

Lakehead University

Fu‐Yuan Wu

Chinese Academy of Sciences

Aniket Chakrabarty

Indian Institute of Science Education and Research, Tirupati

Yue‐Heng Yang

Institute of Geology and Geophysics

Qiuli Li

Chinese Academy of Sciences

J. B. Dawson

University of Edinburgh

Tibor Guzmics

Eötvös Loránd University

N. V. Vladykin

Vinogradov Institute of Geochemistry

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University of Cape Town

Chinese Academy of Sciences

Russian Academy of Sciences

Lakehead University

University of Alberta

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Institute of Geology and Geophysics

Natural History Museum

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Chlorine in mantle-derived carbonatite melts revealed by halite in the St.-Honoré intrusion (Québec, Canada)

Geology (2015)

Vadim S. Kamenetsky Roger H. Mitchell Roland Maas Andrea Giuliani Damien Gaboury

Research Article| August 01, 2015 Chlorine in mantle-derived carbonatite melts revealed by halite in the St.-Honoré intrusion (Québec, Canada) Vadim S. Kamenetsky; Vadim S. Kamenetsky * 1School of Physical Sciences, University of Tasmania, Hobart, TAS 7001, Australia *E-mail: Dima.Kamenetsky@utas.edu.au Search for other works by this author on: GSW Google Scholar Roger H. Mitchell; Roger H. Mitchell 2Department of Geology, Lakehead University, Thunder Bay, Ontario P7B 5E1, Canada Search for other works by this author on: GSW Google Scholar Roland Maas; Roland Maas 3School of Earth Sciences, University of Melbourne, Melbourne, VIC 3010, Australia Search for other works by this author on: GSW Google Scholar Andrea Giuliani; Andrea Giuliani 3School of Earth Sciences, University of Melbourne, Melbourne, VIC 3010, Australia Search for other works by this author on: GSW Google Scholar Damien Gaboury; Damien Gaboury 4Département des sciences appliqués, Université du Québec à Chicoutimi, Chicoutimi, Québec G7H 2B1, Canada Search for other works by this author on: GSW Google Scholar Liudmila Zhitova Liudmila Zhitova 5Novosibirsk State University, Novosibirsk 630090, Russia Search for other works by this author on: GSW Google Scholar Author and Article Information Vadim S. Kamenetsky * 1School of Physical Sciences, University of Tasmania, Hobart, TAS 7001, Australia Roger H. Mitchell 2Department of Geology, Lakehead University, Thunder Bay, Ontario P7B 5E1, Canada Roland Maas 3School of Earth Sciences, University of Melbourne, Melbourne, VIC 3010, Australia Andrea Giuliani 3School of Earth Sciences, University of Melbourne, Melbourne, VIC 3010, Australia Damien Gaboury 4Département des sciences appliqués, Université du Québec à Chicoutimi, Chicoutimi, Québec G7H 2B1, Canada Liudmila Zhitova 5Novosibirsk State University, Novosibirsk 630090, Russia *E-mail: Dima.Kamenetsky@utas.edu.au Publisher: Geological Society of America Received: 01 Apr 2015 Revision Received: 29 May 2015 Accepted: 30 May 2015 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2015 Geological Society of America Geology (2015) 43 (8): 687–690. https://doi.org/10.1130/G36843.1 Article history Received: 01 Apr 2015 Revision Received: 29 May 2015 Accepted: 30 May 2015 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Vadim S. Kamenetsky, Roger H. Mitchell, Roland Maas, Andrea Giuliani, Damien Gaboury, Liudmila Zhitova; Chlorine in mantle-derived carbonatite melts revealed by halite in the St.-Honoré intrusion (Québec, Canada). Geology 2015;; 43 (8): 687–690. doi: https://doi.org/10.1130/G36843.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Mantle-derived carbonatites are igneous rocks dominated by carbonate minerals. Intrusive carbonatites typically contain calcite and, less commonly, dolomite and siderite as the only carbonate minerals. In contrast, lavas erupted by the only active carbonatite volcano on Earth, Oldoinyo Lengai, Tanzania, are enriched in Na-rich carbonate phenocrysts (nyerereite and gregoryite) and Na-K halides in the groundmass. The apparent paradox between the compositions of intrusive and extrusive carbonatites has not been satisfactorily resolved. This study records the fortuitous preservation of halite in the intrusive dolomitic carbonatite of the St.-Honoré carbonatite complex (Québec, Canada), more than 490 m below the present surface. Halite occurs intergrown with, and included in, magmatic minerals typical of intrusive carbonatites; i.e., dolomite, calcite, apatite, rare earth element fluorocarbonates, pyrochlore, fluorite, and phlogopite. Halite is also a major daughter phase of melt inclusions hosted in early magmatic minerals, apatite and pyrochlore. The carbon isotope composition of dolomite (δ13C = −5.2‰) and Sr-Nd isotope compositions of individual minerals (87Sr/86Sri = 0.70287 in apatite, to 0.70443 in halite; εNd = +3.2 to +4.0) indicate a mantle origin for the St.-Honoré carbonatite parental melt. More radiogenic Sr compositions of dolomite and dolomite-hosted halite and heavy oxygen isotope composition of dolomite (δ18O = +23‰) suggest their formation at some time after magma emplacement by recrystallization of original magmatic components in the presence of ambient fluids. Our observations indicate that water-soluble chloride minerals, common in the modern natrocarbonatite lavas, can be significant but ephemeral components of intrusive carbonatite complexes. We therefore infer that the parental magmas that produce primary carbonatite melts might be enriched in Na and Cl. This conclusion affects existing models for mantle source compositions, melting scenarios, temperature, rheological properties, and crystallization path of carbonatite melts. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.

Honor

10.1130/g36843.1

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Citations (17)

Sulphur isotope geochemistry of carbonatites

Geochimica et Cosmochimica Acta (1975)

Roger H. Mitchell H. R. Krouse

Carbonatite

δ34S

Dike

Isotope Geochemistry

10.1016/0016-7037(75)90152-0

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Citations (42)

An estimate of the temperature of intrusion of carbonatite at the Fen complex, S. Norway

Lithos (1969)

Debra S. Jennings Roger H. Mitchell

Carbonatite

Layered intrusion

10.1016/s0024-4937(69)80026-5

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Citations (7)

Tectonic Framework of Lamproite Genesis

Springer eBooks (1991)

Roger H. Mitchell Steven C. Bergman

10.1007/978-1-4615-3788-5_4

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Citations (1)

Loparite and ‘metaloparite’ from the Burpala alkaline complex, Baikal Alkaline Province (Russia)

Mineralogical Magazine (1999)

Anton R. Chakhmouradian Roger H. Mitchell A. V. Pankov Н. В. Чуканов

Abstract Loparite-(Ce) is a ubiquitous accessory mineral in modally diverse albite-rich metasomatic rocks of the Burpala alkaline complex, Siberia. Compositionally, the mineral approaches the ideal formula Na REE Ti 2 O 6 ( REE = Ce > La > Nd > Pr > Sm), and contains minor CaTiO 3 (<4.8 mol.%), SrTiO 3 (<4.7 mol.%) and NaNbO 3 (<6.4 mol.%), The mineral is pseudocubic [ a p = 3.8815(3) Å], and produces an XRD pattern similar to that of synthetic NaCeTi 2 O 6 [ Pnma , a = 5.4517(4), b = 7.7058(9), c = 5.4333(6) Å]. The atomic coordinates and isotropic thermal parameters of synthetic NaCeTi 2 O 6 refined from an XRD powder pattern using the Rietveld method, are given. At Burpala, loparite precipitated from an alkaline REE -rich fluid during the metasomatic alteration of earlier-formed intrusive rocks. In some parageneses, loparite was replaced by ‘metaloparite’ during the final stages of metasomatism. ‘Metaloparite’ has the empirical formula REE Ti 2 O 6- x (OH,F) x ·nH 2 O, and shows minor enrichment in Ca and depletion in Sr, compared to co-existing loparite. The formation of ‘metaloparite’ involved cation leaching, hydration and ion-exchange between loparite and a fluid. ‘Metaloparite’ is metamict at room temperature, but some samples regain the perovskite-type structure upon heating.

Metasomatism

Rietveld Refinement

Antimonate

Alkaline earth metal

Carbonatite

10.1180/002646199548691

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Citations (21)

Niobian ilmenite, hydroxylapatite and sulfatian monazite; alternative hosts for incompatible elements in calcite kimberlite from Internatsional'naya, Yakutia

The Canadian Mineralogist (1999)

Anton R. Chakhmouradian Roger H. Mitchell

Ilmenite

Hydroxylapatite

Source

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Citations (40)

Cretaceous potassic igneous activity in the Raniganj Basin, eastern India: Compositional variations in mica and apatite as recorders of lamproite magma evolution

Lithos (2022)

Jaspreet Saini Suresh C. Patel Sebastian Tappe Roger H. Mitchell Kamal Lochan Pruseth

Phlogopite

Phenocryst

Diopside

Carbonatite

Ilmenite

10.1016/j.lithos.2022.106916

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Citations (2)

POTASSIAN ZIRCONIUM AND TITANIUM SILICATES AND STRONTIAN CERIAN PEROVSKITE IN LAMPROITES FROM THE LEUCITE HILLS. WYOMING

The Canadian Mineralogist (1992)

Roger H. Mitchell I. M. Steele

The groundmass of lamproites from Middle Table Mountain, Leucite Hills, Wyoming, is characterized by the presence of potassium zirconium silicates and Sr{e-rich perovskite. Two intimately intergrown K-Z silicates of differing Ti content are recognizable by cathodoluminescence techniques. Both are similar in composition to wadeite. Intergrown with these minerals is a phase having the composition of the Ti analog (K2TiSi3Oe) of wadeite (K2ZrSi3O9) that is considered to be a new mineral. Groundmass poikilitic perovskite is unusually rich in Sr (zt-7 wt.7o SrO) and rare-earth elements (5-12 wt.Vo Ce2O3) relative to perovskite occurring in other lamproites and kimberlites. The formation of this unusual suite of accessory minerals in the groundmass is considered to reflect the exfeme differentiation of this batch of lamproitic magma relative to other occurences of lamproite in the Irucite Hills.

Leucite

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Kimberlite genesis from a common carbonate-rich primary melt modified by lithospheric mantle assimilation

Science Advances (2020)

Andrea Giuliani D. Graham Pearson Ashton Soltys Hayden Dalton David Phillips

Quantifying the compositional evolution of mantle-derived melts from source to surface is fundamental for constraining the nature of primary melts and deep Earth composition. Despite abundant evidence for interaction between carbonate-rich melts, including diamondiferous kimberlites, and mantle wall rocks en route to surface, the effects of this interaction on melt compositions are poorly constrained. Here, we demonstrate a robust linear correlation between the Mg/Si ratios of kimberlites and their entrained mantle components and between Mg/Fe ratios of mantle-derived olivine cores and magmatic olivine rims in kimberlites worldwide. Combined with numerical modeling, these findings indicate that kimberlite melts with highly variable composition were broadly similar before lithosphere assimilation. This implies that kimberlites worldwide originated by partial melting of compositionally similar convective mantle sources under comparable physical conditions. We conclude that mantle assimilation markedly alters the major element composition of carbonate-rich melts and is a major process in the evolution of mantle-derived magmas.

Carbonatite

Assimilation (phonology)

10.1126/sciadv.aaz0424

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Citations (100)

Composition of olivine, silica activity and oxygen fugacity in kimberlite

Lithos (1973)

Roger H. Mitchell

Phenocryst

Mineral redox buffer

Fugacity

10.1016/0024-4937(73)90080-7

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Citations (79)