stripes
This small 0.3x0.1 km stock cuts limestones of lower Ordovician age. It is formed mainly of nepheline and peralkaline syenites. A large xenolith of 130x70 m of utrabasic rock is preserved in the central part of the intrusion. It is cut by numerous, thin syenite dykes. The rocks of the intrusion are replaced by carbonate. Phlogopite-calcite carbonatite forms rare veins and nests of small size (1-10 cm diameter). Sulphides from calcite carbonatites gave Ù34So/oo values of +0.6 (Grinenko et al., 1970).
EPSTEIN, E.M., PANSHIN, I.P., MORALEV, V.M., VOLKODAV, I.G. 1972. On the vertical zonality of the massifs of the ultrabasic-alkaline rocks and carbonatites. In A.I. Ginzburg (ed) Geology of the ore deposits of the rare elements. 35: 49-69. Nedra. Moscow.
GRINENKO, L.N., KONONOVA, V.A. and GRINENKO, V.A. 1970. Isotopic composition of sulphur of sulphides from carbonatites. Geokhimiya. Akademiya Nauk USSR. Moscow, 1: 66-75.
