"Bogoslovsk" group

The cross-section of the "Peschansk" deposit"BOGOSLOVSK" GROUP of the iron ore deposits (RU: Богословская группа железорудных месторождений) is situated within the Sverdlovsk province of the Russian Federation, on the eastern slope of the Northern Ural mountains. It includes the Peschansk, Auerbach (has been exhausted), and Pokrovsk skarnous deposits of the magnetite ores. The largest one, namely, the Peschansk deposit, has been discovered during the 1940-ies, is being developed since the 1968; the small ones, namely, the Auerbach and Pokrovsk deposits, are known since the 2nd half of the 18th century. The Peschansk deposit is confined to the skarnous ore zone along the western contact of the Auerbach intrusive massif with the surrounding limestones, and with the volcanogenic rocks of the Krasnoturyinsk (formation) stratigraphic suite of the Lower Devonian (see the Figure). There are widely developed the tectonic disturbances, which are in the series of cases in the form of the zones of crackedness. The mineralization is represented by the series of the ore bodies with the complicated shape with the thickness of 5-10 metres, up to 120 metres, which have been traced to the depth of more than 900 metres. The content of Fe within the ores is 49%, there exist also S, Cu, Co. The explored reserves are approximately 160 million tonnes (1981). The ore is easily beneficiated by the magnetic separation. The hydrogeological conditions of the deposit are relatively simple. The deposits are being developed by the underground method. The extraction of the ore is 3.5 million tonnes (1980).