Affiliation:
1. IGMiP Faculty of Geology, University of Warsaw, ul. Żwirki i Wigury 93, 02-089 Warszawa, Poland
2. Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
Abstract
Abstract
Chevkinite-group minerals are widespread in a very wide range of igneous and metamorphic parageneses, forming important components of accessory mineral assemblages. Their presence in a rock may be difficult to establish by standard optical techniques, which has contributed to their importance being underestimated; a combination of SEM and EMPA is recommended here. Currently, there are eleven IMAapproved members of the group but undoubtedly several more will be described in the near future. There is considerable compositional variation in the group, which can be expressed as:
REE + M2+
C + M3+
C = Ca2+
A + Sr + Ti4+
C + Zr4+
C
where A and C are structural sites. Chevkinite-group minerals strongly fractionate geochemically coherent pairs, such as LREE-HREE, Nb-Ta, Zr-Hf and Th-U, and thus play a critical role in geochemical modelling.
Subject
Geochemistry and Petrology
Cited by
6 articles.
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1. The REE-Zr-U-Th Minerals of the Maronia Monzodiorite, N. Greece: Implications on the Saturation and Segregation Mechanisms of Critical Metals in Intermediate–Mafic Compositions;Minerals;2023-09-26
2. Multi-methodical study of the Ti, Fe2+ and Fe3+ distribution in chevkinite-subgroup minerals: X-ray diffraction, neutron diffraction, 57Fe Mössbauer spectroscopy and electron-microprobe analyses;Physics and Chemistry of Minerals;2020-05-28
3. Relationships between monazite, apatite and chevkinite-group minerals in the rhyolitic Joe Lott Tuff, Utah, USA;Lithos;2020-02
4. Volcanic-Derived Placers as a Potential Resource of Rare Earth Elements: The Aksu Diamas Case Study, Turkey;Minerals;2019-03-30
5. Composition, paragenesis, and alteration of the chevkinite group of minerals;American Mineralogist;2019-03-01