stripes
This intrusion is situated 2.5 km east of Bykhyt-West (Butakova and Egorov, 1962; Egorov, 1969) and is oval in plan with a narrow northeasterly extension. The succession of intrusions is the same as in Bykhyt-West, that is olivinite, which is concentrated towards the margins, melilitolite, melteigite, ijolite, nepheline and alkaline syenite. The largest part of the massif is occupied by ijolite. The narrow northeasterly extension of the complex is composed of okaite and melilitolite with small amounts of nepheline, pyroxene and olivine. All the other rock types are represented mainly by xenoliths and veins.
BUTAKOVA, E.L. and EGOROV, L.S. 1962. The Meimecha-Kotui complex of formations of alkaline and ultrabasic rocks. In Petrography of Eastern Siberia. 1: 417-589. Izd-vo AN SSSR, Moscow.
EGOROV, L.S. 1969. The melilite rocks of the Maimecha-Kotui province. Nedra, Leningrad. 247 pp.
