stripes
This is a small intrusion of 0.6x1.2 km emplaced in Cambrian dolomites and situated 2 km southeast of the Bor-Uryach complex (see Fig. 131) (Butakova and Egorov, 1962). It consists mainly of melteigite and nepheline picrite, the former comprising 50-90% clinopyroxene, nepheline, biotite and titanomagnetite with accessory titanite, perovskite, olivine, apatite and K-feldspar. About one third of the intrusion comprises earlier melilitolites (okaites) and olivine turjaites. The okaites consist of melilite and nepheline with accessory olivine, pyroxene, titanomagnetite, biotite, perovskite, apatite and others. Olivinite has been found only as small xenoliths in melteigite.
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.
