V. P. Mamontov

Kola Science Centre

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A. S. Fanygin

Kola Science Centre

НН

Н. Н. Кононкова

V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry

Nadezhda Krivolutskaya

Russian Academy of Sciences

N. M. Svirskaya

V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry

L. N. Kogarko

V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry

M. I. Akimenko

Russian Academy of Sciences

V. F. Smolkin

Vernadsky State Geological Museum

N. V. Sorokhtina

Russian Academy of Sciences

B. V. Belyatskii

Russian Academy of Sciences

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Ф. П. Митрофанов

Kola Science Centre

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Russian Academy of Sciences

V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry

Geological Institute

Kola Science Centre

Institute of Precambrian Geology and Geochronology

University of Oulu

All Russian Research Institute of Geology and Mineral Resources of the World Ocean

Geological Survey of Finland

A.P. Karpinsky Russian Geological Research Institute

Mineral Resources

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A new occurrence of alkaline magmatism on the Kola Peninsula: An agpaitic dyke in the Kandalaksha region

Doklady Earth Sciences (2014)

M. I. Akimenko L. N. Kogarko N. V. Sorokhtina Н. Н. Кононкова V. P. Mamontov

Kola peninsula

Peninsula

10.1134/s1028334x14090128

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Citations (5)

A New Occurrence of Alkaline Magmatism on the Kola Peninsula: An Agpaitic Dyke in the Kandalaksha Region.

EGUGA (2015)

M. I. Akimenko L. N. Kogarko N. V. Sorokhtina Н. Н. Кононкова V. P. Mamontov

1125 Alkaline magmatism has been widely abundant on the territory of the Kola Peninsula with the maximal activity in the Paleozoic, when most of the alkaline– ultrabasic complexes, alkaline intrusions of the agpaitic series, and rocks of the dyke series were formed [1–3]. Paleozoic dykes of alkaline rocks were registered (1) in the Khibiny and Lovozero agpaitic massifs and their frames; (2) in the massifs of alka� line–ultrabasic rocks with carbonatite (Kovdor, Turii Mys, Vuorijarvi, Afrikanda, Kandaguba, etc.); (3) in autonomous swarms, which are not spatially related to alkaline intrusions (dykes on the coast of the Kan� dalaksha Bay, swarms of pipes and dykes of kimberlite and melilitite of the Tersk coast, etc.) [3]. A new occurrence of alkaline dyke magmatism was discovered in 2010 during the geological works per� formed by the Murmansk Geological Prospecting Expedition in the “Mokhnatye Roga” area located 55 km to the southeast of the Kovdor massif ( 67°15′ N, 31°30′ E) (Fig. 1). The “Mokhnatye Roga” area is located in the Ensk segment of the northwestern part of the Belomorian mobile belt. We performed a complete petrological and geochemical description of the sections in Holes 19 and 24, which reveal one of the largest dykes in the area. The dyke, with a length of ≈4 km and a width of ≈160 m, has an eastern orientation with steep dipping (60°–90°) to the north. The thickness of Quaternary deposits ranges from 0.8 to 4.0 m; alkaline rocks occur in the range of 4.0–93.9 m being followed by host amphibole–biotite gneiss with interbeds of plagioam� phibolite (AR2 mt) along the section. The contacts with host rocks are sharp, secant, magmatic; there are no

Massif

Kola peninsula

Carbonatite

Ultramafic rock

Prospecting

Nepheline

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Geochemical features of the drusite massifs, the central part of the Belomorian mobile belt: I. Distribution of major and trace elements in the rocks

Geochemistry International (2010)

Nadezhda Krivolutskaya V. F. Smolkin N. M. Svirskaya V. P. Mamontov A. S. Fanygin

Massif

Ultramafic rock

Trace element

10.1134/s0016702910050046

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Citations (19)

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

Journal of Petrology (1998)

A. N. Korobeinikov Ф. П. Митрофанов Seppo Gehör K. Laajoki V. P. Pavlov

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

Kola peninsula

Peninsula

10.1093/petroj/39.11-12.2033

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Citations (34)

Geochemical specifics of massifs of the drusite complex in the central Belomorian Mobile Belt: II. Sm-Nd isotopic system of the rocks and the U-Pb isotopic system of zircons

Geochemistry International (2010)

Nadezhda Krivolutskaya B. V. Belyatsky V. F. Smolkin V. P. Mamontov A. S. Fanygin

Massif

Ultramafic rock

Geochronology

10.1134/s0016702910110029

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Citations (20)