stripes
This occurrence is located 5 km south of the Khibina pluton and follows an east-west-trending pattern of fractures. It is lens-shaped and has a length of 20 km and width from 0.5 to 2.2 km. The contacts with volcanogenic country rocks are tectonised and complicated by mylonite zones and injected by veins of alkaline rocks. The intrusion consists of peralkaline, analcime and nepheline-analcime syenites. There are also dykes of syenite porphyry, syenite pegmatite and nordmarkite as well as albitites, which develop in the zones of syenite mylonitization.
KUKHARENKO, A.A., BULAKH, A.G., IL'INSKY G.A., SHINKAREV, N.F. and ORLOVA, M.P. 1971. Metallogenic peculiarities of alkaline formations of the eastern part of the Baltic shield. Trudy Leningradskogo Obshchestva Estestvoispytatelei, 122 (2): 278 pp.
VINOGRADOV, A.N., BATIEVA, I.D., BELKOV, I.V. and VINOGRADOV, G.V. 1985. Petrochemical types and succession of formation of intrusive series in the polyformational Gremyakha-Vyrmes massif.In Petrology and mineralogy of alkaline, alkaline-ultrabasic and carbonatite complexes of the Karelia-Kola region. 61-9. Akademii Nauk SSSR. Kola Branch, Apatity.
