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Geochemistry International

, Volume 56, Issue 12, pp 1135–1147 | Cite as

Genesis of Charoite Rocks in the Murun Massif, Aldan Shield, Russia

  • N. V. Vladykin
  • A. A. Borovikov
  • E. Yu. Dokuchits
  • V. G. Thomas
Article
  • 29 Downloads

Abstract

Data on mineral-hosted inclusions indicate that the charoite rocks crystallized in a heterogeneous medium of carbonate–silicate and carbonate melts, gaseous and H2O–salt fluids. Our results indicate that the early rock-forming minerals of the charoite rocks started to crystallize at high temperatures (>800°C), and crystallization may have terminated at lower temperatures (600–450°С). Data on the melt and fluid inclusions confirm the conclusion that the charoite rocks are of magmatic origin. The facts that these rocks are typically found as vein- and lens-shaped bodies, the composition of these rocks does not correlate with the composition of the host rocks, and the occurrence of chilled fine-grained domains of the charoite rocks also suggest that these rocks crystallized from magmatic melt.

Keywords:

charoite rocks melt and fluid inclusions studying mineral-hosted inclusions 

Notes

ACKNOWLEDGMENTS

The authors thank I.N. Kupriyanova of the Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, for assistance with IR and Raman spectroscopic studies of the inclusions. S.V. Palesskii is thanked for help with LA-ICP-MS analysis of the inclusions. The authors also thank V.B. Naumov and I.P. Solovova for valuable comments and recommendations, which allowed the authors to improve the manuscript. This study was financially supported by the Russian Foundation for Basic Research, project no. 17-55-45028 and government-financed project no. 0330-2016-0001.

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Vinogradov Institute of Geochemistry, Siberian Branch, Russian Academy of SciencesIrkutskRussia
  2. 2.Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of SciencesNovosibirskRussia

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