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Zircon behavior in the partially melted planetary mantle
Yakimenko A +3 more
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An Introduction to Carbonatites and Carbonatite Complexes
2018The Alno igneous complex intruded local migmatites and granite country-rocks of Svecofennian age at ~580 Ma and produced a suite of early alkaline silicate intrusives (e.g., ijolites, nepheline syenites) and dykes (e.g., trachytes, phonolites) and later a suite of carbonatite sheet intrusions for which Alno is widely known.
Peter Kresten, Valentin R. Troll
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CARBONATITES AND CARBONATITES AND CARBONATITES
The Canadian Mineralogist, 2005Le clan des carbonatites est ici redefini dans le contexte d'une classification mineralogique et genetique, et subdivise en deux groupes: carbonatites primaires et residus carbothermaux. On souligne le fait que "carbonatite" est a la fois un terme petrographique applicable a un type de roche particulier, et un terme faisant reference a un groupe de ...
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Properties of Carbonatite Magma and Processes in Carbonatite Magma Chambers
The Journal of Geology, 1983The physical and thermal properties of carbonatite magmas are estimated by analogy with alkali carbonate melts, which are ionic liquids, composed of discrete, unpolymerized ions. Carbonatite magmas are estimated to have low viscosity (on the order of 5 × 10-2 poise), low heat of fusion (175 J/gm), and large thermal diffusivity (4 × 10-3 J/cm-sec-K ...
Allan H. Treiman, Andrew Schedl
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Nature, 1957
IN 1952 1 one of us described specimens of syenitic and carbonate rocks collected in northern Kivu, near the south-western termination of the Lake Edward Rift, by Borgniez, in 1938 2. The junior author has recently had the opportunity of revisiting the locality and has established the carbonatitic nature of the carbonate rocks.
P. DE BÉTHUNE, A. MEYER
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IN 1952 1 one of us described specimens of syenitic and carbonate rocks collected in northern Kivu, near the south-western termination of the Lake Edward Rift, by Borgniez, in 1938 2. The junior author has recently had the opportunity of revisiting the locality and has established the carbonatitic nature of the carbonate rocks.
P. DE BÉTHUNE, A. MEYER
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Mineralogical Magazine, 1981
AbstractNormal carbonatite magmas are characteristically associated with ijolites and produce extensive fenitization by alkali metasomatism, commonly feldspathization or phlogopitization. The sequence of carbonatites developed from this magma are characterized by igneous isotopic ratios, high contents of incompatible elements, their distinctive pattern
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AbstractNormal carbonatite magmas are characteristically associated with ijolites and produce extensive fenitization by alkali metasomatism, commonly feldspathization or phlogopitization. The sequence of carbonatites developed from this magma are characterized by igneous isotopic ratios, high contents of incompatible elements, their distinctive pattern
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International Geology Review, 1977
(1977). On the origin of carbonatites. International Geology Review: Vol. 19, No. 9, pp. 997-1008.
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(1977). On the origin of carbonatites. International Geology Review: Vol. 19, No. 9, pp. 997-1008.
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Solubility of Water in Carbonatites
ACS Earth and Space Chemistry, 2020Water solubility in carbonatite magmas at 1 bar total pressure has been explored. Three compositions of carbonatite magma have been studied: natrocarbonatite from Oldoinyo Lengai, Tanzania, and two...
Nathan S. Jacobson +3 more
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Geological Society, London, Special Publications, 1987
Summary Carbonatites found in strongly alkaline intra-plate petrographic volcanic provinces are associated with olivine-poor nephelinites and with phonolites. Olivine-rich nephelinites occur in basanitic and alkali basalt provinces, normally without carbonatites.
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Summary Carbonatites found in strongly alkaline intra-plate petrographic volcanic provinces are associated with olivine-poor nephelinites and with phonolites. Olivine-rich nephelinites occur in basanitic and alkali basalt provinces, normally without carbonatites.
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