Composition of the gases from minerals of corundum-bearing rocks from the belomorian mobile belt (North Karelia, Russia)

Ekaterina Akimova, Alexander Verchovsky, Evgeniy Kozlov, Kirill Lokhov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Isotopic composition of noble gases and other volatiles (CO2, N2) from minerals of corundum-bearing rocks with isotopically ultralight oxygen from Khitoostrov deposit have been investigated. The studies were conducted on Finesse mass-spectrometry system [1] using step heating in temperature range from 200ºС to 1400ºС. The following minerals were investigated: corundum, amphibole, garnet, staurolite. For the same samples, differential scanning calorimetry and thermogravimetry curves have been obtained. The first results of the studies show that the low-temperature (less than 400°C) release peaks of carbon dioxide and nitrogen probably represent a laboratory organic contamination. The middle-temperature release peaks (400-800ºC) are potentially consistent with decrepitation of fluid inclusions and diffusion of the gases from crystalline lattice of the minerals, and the high-temperature release peaks (900-1400ºC) possibly indicate the transformation of mineral structures such as amphibole and staurolite as a result of dehydration.

Original languageEnglish
Title of host publication17TH INTERNATIONAL MULTIDISCIPLINARY SCIENTIFIC GEOCONFERENCE SGEM 2017
Subtitle of host publicationAlbena, Bulgaria, 29 июня-05 июля 2017 г. Conference proceedings, GEOLOGY, MINERAL PROCESSING
PublisherSTEF92 Technology Ltd.
Pages103-108
Number of pages6
Volume17, Issue 11
ISBN (Print) 978-619-7105-98-8
DOIs
StatePublished - 1 Jan 2017
Event17th International Multidisciplinary Scientific Geoconference, SGEM 2017 - Albena, Bulgaria
Duration: 29 Jun 20175 Jul 2017

Publication series

NameInternational Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
Number11
Volume17
ISSN (Print)1314-2704

Conference

Conference17th International Multidisciplinary Scientific Geoconference, SGEM 2017
Abbreviated titleSGEM 2017
CountryBulgaria
CityAlbena
Period29/06/175/07/17

Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

Keywords

  • Corundum-bearing rocks
  • Noble gas
  • Thermal analysis

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