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Chevkinite-group minerals from Russia and Mongolia: new compositional data from metasomatites and ore deposits

Published online by Cambridge University Press:  05 July 2018

R. Macdonald ,
B. Bagiński ,
P. Kartashov ,
D. Zozulya  and
P. Dzierżanowski
R. Macdonald*
Affiliation:
IGMiP Faculty of Geology, University of Warsaw, 02-089 Warsaw, Poland Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
B. Bagiński
Affiliation:
IGMiP Faculty of Geology, University of Warsaw, 02-089 Warsaw, Poland
P. Kartashov
Affiliation:
Institute of Ore Deposits, Russian Academy of Sciences, Moscow 109107, Russia
D. Zozulya
Affiliation:
Geological Institute, Kola Science Centre, Russian Academy of Sciences, Apatity, Russia
P. Dzierżanowski
Affiliation:
IGMiP Faculty of Geology, University of Warsaw, 02-089 Warsaw, Poland
*
*E-mail: [email protected]
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Abstract

Electron-microprobe analyses of Russian and Mongolian chevkinite-group minerals from little-known host lithologies, including various metasomatic rocks, quartzolites and an apatite deposit, are presented. The mineral species analysed include chevkinite-(Ce), perrierite-(Ce), polyakovite-(Ce) and Sr- and Zr-rich perrierite-(Ce). Compositional variation in the Sr-rich members of the group is broadly represented by the exchange vector (Fe + Mn + Al + REE) ↔ (Ca + Sr + Ti + Zr). Despite the varied parageneses, the chevkinite-(Ce) compositions are similar to previously published data. Many crystals have strong internal compositional variations, partly produced during primary crystallization and partly during low-temperature hydrothermal alteration.

Keywords

chevkinite groupelectron microprobeintra-crystalline variationshydrothermal alterationchevkinite-(Ce)perrierite-(Ce)polyakovite-(Ce)
Type
Research Article
Information
Mineralogical Magazine , Volume 76 , Issue 3 , June 2012 , pp. 535 - 549
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2016

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