Geology and Copper Sulphide Mineralization of the Salmagorskii Ring Igneous Complex, Kola Peninsula, NW Russia

Abstract

The Salmagorskii igneous complex represents a rare example of the carbonatite body of the Phalaborwa complex in South peralkaline rocks containing significant copper sulphide minAfrica contains one of the world’s largest copper deposits, eralization presented by chalcopyrite, djerfisherite and cubanite. but contrary to many other similar intrusions, it is charData on the geological structure of the complex and the copper acterized by the lack of niobium mineralization (Versulphide–apatite mineralization related to its foidolitic peralkaline woerd, 1986; Eriksson, 1989). On the other hand, even rocks have been obtained from drilling in recent years. The sub-economic copper sulphide ores (except for Phalsequence of rocks (dunite–clinopyroxenite–melilitolite–ijolite–urtite– aborwa) are rather uncommon in alkaline rocks and melteigite–carbonatite) forms a perfect concentric zoning within the carbonatites. This paper presents the first data on copper pluton indicating that fractional crystallization was the predominant mineralization from mafic peralkaline rocks of the Salpetrogenetic process. Copper sulphide mineralization formed at the magorskii complex. post-magmatic stage, when recrystallization processes within earlier Alkaline–ultramafic ring igneous complexes in the Kola ijolite and melteigite took place under the influence of a fluid rich Alkaline Province (Kukharenko et al., 1965), as well as in CO2, H2O, alkalis, S, P, Cu, and Cl. other regions (Woolley, 1987; Kogarko et al., 1995; Vasiliev & Zolotukhin, 1995), are usually concentrically zoned, pipe-like intrusions in which ultramafic rocks (dunite or clinopyroxenite) occupy the central parts of the complexes and melilitolites with foidolites surround