Results 131 to 140 of about 388 (174)
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Carbonatites in China: A review
Journal of Asian Earth Sciences, 2006Abstract There are 27 known occurrences of carbonatites in China. Brief descriptions are given of all occurrences including geographical coordinates, geological setting, associated rocks, carbonatite forms, ages, mineralogy, mineralisation, and carbon and oxygen isotopic data.
Zhuming Yang, Alan Woolley
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Geological Curator, 2014
Geological material is the most chemically diverse of all types of natural history collections. Each mineral assemblage will require a specific set of environmental parameters to ensure stability. Unfortunately these are not yet fully understood and it is widely recognised that there is no environmental condition which will be suitable for all.
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Geological material is the most chemically diverse of all types of natural history collections. Each mineral assemblage will require a specific set of environmental parameters to ensure stability. Unfortunately these are not yet fully understood and it is widely recognised that there is no environmental condition which will be suitable for all.
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Alkalic Rocks and Carbonatites
1972Alkalic rocks and carbonatites are among the rarest igneous rock-types. They tend to occur in stable platform areas and in Precambrian shields, rather than in orogenic belts. Barker (1969) estimated that in North America, alkalic rocks occupy a total surface area of only about 1500 square miles, and Heinrich (1966) concluded that the worldwide areal ...
Gunter Faure, James L. Powell
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CARBONATITE VOLCANOS OF EAST AFRICA AND THE GENESIS OF CARBONATITES
International Geology Review, 1985Yu. L. Kapustin, A. I. Polyakov
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Kola ‘carbonatites and carbonatites’: glimpses into the sub-continental mantle
Journal of African Earth Sciences, 2001A. Rukhlov, K. Bell, V. Ivanikov
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Carbonatite-Alkaline Magma Immiscibility Conducing to Carbonatite REE Enrichment
2018Carbonatite is a particular type of magmatic rocks enriched in REE relative to the majority of igneous rocks. Among the numerous carbonatites referenced worldwide, only a few of them contain economic REE concentrations widely considered as resulting from late- to post- magmatic processes.
Nabyl, Zineb +6 more
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