DBPapers
DOI: 10.5593/sgem2017/11/S01.013

COMPOSITION OF THE GASES FROM MINERALS OF CORUNDUM-BEARING ROCKS FROM THE BELOMORIAN MOBILE BELT (NORTH KARELIA, RUSSIA)

E.Y. Akimova, A.B. Verchovsky, E.N. Kozlov, K.I. Lokhov
Saturday 9 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-98-8 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 11, 103-108 pp, DOI: 10.5593/sgem2017/11/S01.013

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 400oC) 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.

Keywords: noble gas, corundum-bearing rocks, thermal analysis

Home | Contact | Site Map | Site statistics | Visitors : 0 / 353063

Follow site activity en  Follow site activity GEOLOGY  Follow site activity Papers SGEM2017   ?

CrossRef Member    Indexed in ISI Web Of Knowledge   Indexed in ISI Web Of Knowledge
   

© Copyright 2001 International Multidisciplinary Scientific GeoConference & EXPO SGEM. All Rights Reserved.

Creative Commons License