stripes
Occurrence number:
136-03-030
Country:
Russia
Region:
Vitim subprovince
Location:
Longitude: 111.83, Latitude: 53.83
Carbonatite:
No
At this locality alkaline rocks cut Upper Proterozoic marbles and comprise two small bodies of 50 x 100 and 100 x 200 m. They contain urtites and ijolites, small areas of melteigite and theralite and nepheline syenite veins are found. The rocks comprise nepheline (3-60%), clinopyroxene (40-80%), hastingsite, garnet, calcite (up to 3%) and cancrinite. Microcline, plagioclase and scapolite are occasionally found.
References:
KONEV, A.A. 1982. Nepheline-bearing rocks from the Sayan-Baikal area. Nauka, Siberian Branch of the Academy of Sciences, Novosibirsk. 201 pp.
SHARACKSHINOV, A.O. 1975. Petrology of nepheline syenite from the Vitim Plateau. Nauka, Siberian Branch of the Academy of Sciences, Novosibirsk. 154 pp.
Location: