stripes
Occurrence number:
136-13-015
Country:
Russia
Region:
Kuznetsk-Minusinsk
Location:
Longitude: 88.53, Latitude: 54.92
Carbonatite:
No
Kiiskii comprises numerous dykes and dyke-like bodies of nepheline syenite which cut syenites of the Udarninsk pluton. The nepheline syenite usually has a gneissose structure and consists of nepheline (18-41%), orthoclase-perthite (32-60%), albite (2-20%), hastingsite and biotite (2-30%); sometimes aegirine-augite (5-9%) is present. The usual accessory minerals are titanite, apatite and Fe-Ti oxide minerals.
References:
KORTUSOV, M.P. 1963b. The Kiisk gabbro-syenite intrusive complex of the Maryinskaya Taiga (Kuznetsk Alatau). In Yu.A. Kuznetsov (ed) Magmatic complexes of the Altay-Sayan fold area. 78-91. USSR Academy of Sciences, Novosibirsk.
Location: