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Carbonatite nomenclature

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Zusammenfassung

Ausgehend von der Zusammensetzung von Karbonatiten des Fenkomplexes in Norwegen und des Alnökomplexes in Schweden wird folgende Nomenklatur karbonatischer Gesteine vorgeschlagen: Karbonatite (>70% Karbonate), unterteilt in die kalzitischen Sövite und Alvikite, die dolomitisch-ankeritischen Rauhaugite und Beforsite sowie den alkali-karbonatischen Lengait. Siliko-Karbonatite sind Gesteine mit 50–70 % Karbonaten. Sie sind in Siliko-Sövit, Siliko-Alvikit, Siliko-Rauhaugit und Siliko-Beforsit unterteilt.

Abstract

Based upon the composition of carbonatites of the Fen Complex in Norway and the Alnö Complex in Sweden, the following nomenclature of carbonatitic rocks is suggested: Carbonatites (> 70 % carbonate minerals), sub-divided into the calcitic sövites and alvikites, the dolomitic to ankeritic rauhaugites and beforsites and the alkali-carbonatitic lengaite. Silico-carbonatites are rocks with 50–70 % carbonate minerals. They are subdivided into silico-sövites, silico-alvikites, silico-rauhaugite and silico-beforsite.

Résumé

Sur la base de la composition des carbonatites du complexe Fen en Norvège et du complexe Alnö en Suède, je propose d'employer la nomenclature suivante pour les carbonatites: les carbonatites (>70% des carbonates) qui se subdivisent en soevites et en alvikites calcitiques, les rauhaugites et les beforsites qui vont des dolomites aux ankérites et les lengaites à caractère alcalin-carbonatitique. Les silico-carbonatites sont des roches qui contiennent 50–70 % de carbonates. Ils se subdivisent en silico-soevites, silico-alvikites, silico-rauhaugites et silico-beforsites.

Краткое содержание

Предлагается следуё щая номерклатура для карбонатитных пород, построенная на составе карбонати тов комплексов Fen в Нор вегии и Ainö в Швеции: карбонатиты (> 70% карбон атов). подразделяемые на кальцитовые севиты и альвикиты; доломити зорованные доломитно-анкеритов ые Rauhaugite и Beforsite, а также щелочно-карб онатный ленгаит. Силико-карбонаты — по роды, содержащие на 50–70 % карб онатов, подразделяют на силико-севиты силико-альвикитв, сил ико-Rauhaugite и силико/бефорси ты.

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Author notes

  1. Peter Kresten

    Present address: Geological Survey of Sweden, Box 670, S-751 28, Uppsala, Sweden

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    Kresten, P. Carbonatite nomenclature. Geol Rundsch 72, 389–395 (1983). https://doi.org/10.1007/BF01765916

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