DBPapers
DOI: 10.5593/sgem2017/13/S03.061

TALC-BEARING ROCKS OF KARELIA, THEIR PROPERTIES AND POSSIBLE APPLICATIONS (EXEMPLIFIED BY KALLIEVO-MURENNANVAARA DEPOSIT

V.P. Ilyina, P.V. Frolov, E.E. Klimovskaya, S.G. Tkacheva, V.A. Shekov
Monday 11 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-00-1 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 13, 479-486 pp, DOI: 10.5593/sgem2017/13/S03.061

ABSTRACT

Talc-bearing rocks in Kallievo-Murennanvaara deposit are associated with ultramafic rocks of peridotite-picritic series. Serpentinized rocks in the picritic portion of the sequence remained unaffected by talc alteration. Peidotitic komatiites, occurring below picrites which were altered to talc-carbonate rocks by carbon dioxide and then to talc-chloritic rocks under the influence of silica and alumina (the result of granite formation), were productive for soapstone. Kallievo-Murennanvaara soapstone deposit, is located on the south shore of Lake Segozero in the Medvezhyegorsk District, Republic of Karelia. Talc-bearing rocks are 40-65 m thick and 450 m long. They were used as raw materials in the radio industry and electrical technology and as refractory and facing material with an emphasis on a monolithic variety. The conditions of formation, mineral and chemical composition, thermal physical properties and possible applications of Kallievo-Murennanvaara talc-bearing rocks are discussed below.

Keywords: talc-chlorite schist, komatiite, thermal physical properties, refractory material.