stripes
Occurrence number:
136-11-003
Country:
Russia
Region:
Kanin-Timan
Location:
Longitude: 48, Latitude: 67.63
Carbonatite:
No
This massif, which has an area of 1.5 km2, consists mainly of quartz syenite and peralkaline syenite but with small areas of nepheline syenite. The nepheline syenites are composed of alkali feldspar Or50-52Ab48-50 (66-86%), nepheline (up to 10%), plagioclase An33-38 (up to 3.5%), biotite (7-9%) and amphibole.
Age:
Devonian - according to geological relationships.
References:
IVENSEN, U.P. 1964. Magmatism of Timan and the Kanin Peninsula. Nauka, Moscow and Leningrad. 126 pp.
SMIRNOV, M.U., DOMNIA, M.I., DONSKIH, A.V. and SHINKAREV, N.F. 1980. On the genetic relationship of the metabasites and granitoids with alkaline rocks of the North Timan (according to geological and experimental data). Zapiski Vserossiiskogo Mineralogicheskogo Obshchestva. Moskva, 109: 412-23.
Map:
Fig. 2_39. Distribution of alkaline rocks in the northern part of the Kanin-Timan province (after Smirnov et al., 1980, Fig. 1). Rumyanichnyi is the large intrusion in the northwest of the province and Malyi Kameshek lies 6 km southeast from it. and Fig. 2_40. Malyi Kameshek (after Smirnov et al., 1980, Fig. 2a).
Location: