stripes
This small peralkaline body cuts Cambrian limestones. The alkaline rocks have a banded structure produced by alternating leucocratic and melanocratic varieties. Nepheline syenite-diorite, nepheline syenite and syenite are the most abundant rock types and they contain xenoliths of gabbro and marble derived from the country rocks. The nepheline-bearing rocks consist of up to 35% nepheline, up to 40% fassaite, plagioclase of An17-18 or An23-27 in nepheline syenites but andesine in nepheline syenite-diorite. Microcline is poikilitic and includes plagioclase, clinopyroxene and amphibole. Secondary minerals are liebenerite, sericite and muscovite; accessories include andradite, calcite, titanite and apatite.
BOGNIBOV, V.I. 1979. The occurrences of nepheline-bearing rocks in connection with the lower Palaeozoic granitoids of the Kuznetsk Alatau. In V.A. Kuznetzov (ed) Granitoid complexes from Siberia. 49-57. Nauka, Siberian Branch of the Academy of Sciences, Novosibirsk.
DOVGAL' V.N. and SHIROKIH, V.A. 1980. History of the development of the high alkaline magmatism of the Kuznetsk Alatau. Proceedings of the Institute of Geology and Geophysics, Nauka, Siberian Branch of the Academy of Sciences, Novosibirsk. 457. 216 pp.
LUCHITSKY, I.V. 1960. Volcanism and tectonics of Devonian depressions of the Minusinsk intermontane trough. Publishing House of the USSR Academy of Sciences, Moscow. 275 pp.
