Geochemical characteristics and types of gold occurrences in Finland and Karelia
- Postgraduate student G.V. Plekhanov Saint Petersburg State Mining Institute
Abstract
The geochemical characteristics of numerous gold occurrences identified in the Baltic Shield are reviewed in order to typify them by geochemical data and to identify a group of elements whose anomalies can serve as indicators in the search for gold deposits, The data on the content of a wide range of chemical elements in ores and primary halos of 43 gold ore objects in Finland, as well as, for comparison, in some gold deposits of greenstone belts of Canada and Austria were used as baseline We also characterized two objects in Karelia: Mayskoe deposit and Alattu ore occurrence. The analysis of geochemical spectra has established the main indicator elements of Precambrian gold mineralization (An, As, Te, S, Bi, Ag, W, Cu, Sb, Se, Hg, U, CI, B, Sn, Mo, Pb, Zn). Five geochemical types of gold mineralization in the Baltic Shield have been identified according to the ratio of concentrations of the main gold satellites. The obtained results can be used in geochemical prospecting for gold in Karelia and the Kola Peninsula.
References
- Булавин А.В. Геолого-экономические аспекты изучения и освоения месторождений благородных металлов в Карелии / А.В.Булавин, В.Т.Рябухин // Проблемы золотоносности и алмазоносности севера европейской части России / КарНЦ РАН. Петрозаводск, 1997.
- Коровкин В.А. Некоторые аспекты металлогении золота Карело-Кольского региона / В. А.Коровкин, Л. В. Туры лева // Проблемы золотоносности и алмазоносности севера европейской части России / КарНЦ РАН Петрозаводск, 1997.
- Марченко А.Г. Геохимические спектры золотоносной минерализации в Костомукшской зеленокаменной структуре Карелии / А.Г.Марченко, А.Ш.Карлос // Международный симпозиум по прикладной геохимии стран СНГ: Тезисы докладов / ИМГРЭ. М., 1997.
- Металлогения Карелии / С.И.Рыбаков, А.И.Голубев, В.Д.Слюсарев и др. / КарНЦ РАН. Петрозаводск, 1999.
- Экономическая оценка освоения минеральных ресурсов Карелии / Ин-т экономики КарНЦ РАН. Петрозаводск, 2001.
- Geological development, gold mineralization and exploration methods in the late Archean Hattu schist belt, Ilomantsi, Eastern Finland // Geological Survey of Finland, Special Paper 17. Espoo, 1993.
- Nurmi P.A. Gold exploration in Finland in the 1980s: the perspective towards 2000 a.d. // Geological Survey of Finland, Special Paper 12. Espoo, 1991.
- Nurmi P.A. Geochemical characteristics of mesodermal gold deposits in the Fennoscandian Shield, and a comparison with selected Canadian and Australian deposits / P.A.Nurmi, P.Lestinen, H.Niskavaara // Geological Survey of Finland, Bull. 351. Espoo, 1991.