On the origin of urtites of the Khibiny alkaline massif
Abstract
The urtites in the Khibiny massif are part of a complex ijolite-urtite complex of rocks occurring among nepheline syenites in the form of a horseshoe-shaped body gently dipping to the center of the massif. Within this body, trachytoid ijolites are the most widespread. The so-called fine-grained ijolites are very limitedly distributed here. According to the data of geological mapping of the ijolite-urtite band, urtites lie among trachytoid ijolites and are exposed on the surface in the hanging wall or central part of the horseshoe-shaped body.
Область исследования:
(Archived) Without section
Funding:
None
References
- Borutsky B. E. To the typomorphism of alkali feldspars of the Khibiny massif. Sb. "Tipomorfizm mineralov". Nauka, 1968. (in Russian)
- Dudkin O. B., Kozyreva L. V., Pomerantseva N. G. Mineralogy of Apatite Deposits of the Khibiny Tundras. Nedra, 1964. (in Russian)
- Eliseev N. A., Volodin E. N., Ozhinsky I. S. Geologic map of the Khibiny tundras. Tr. Len. geol. upr., iss. 19, 1939. (in Russian)
- Ivanova T. N. Apatite deposits of the Khibiny tundras. Gosgeoltekhizdat, 1963. (in Russian)
- Kalinkin M. M. To prototectonics of apatite-nepheline bodies. Zapiski Gornogo Instituta, vol. LII, iss. 2, 1967. (in Russian)
- Nikitin V. D. To the theory of genesis of pegmatites. Zapiski Gornogo Instituta, vol. XXX, iss. 1955. (in Russian)
- Nikitin V. D. Pegmatite deposits. In the book: Genesis of Endogenous Ore Deposits. Nedra, 1968. (in Russian)
- Rudenko S. A. Genesis and structural peculiarities of mariupolites. Zapiski Gornogo Instituta, vol. XLII, iss. 2, 1962. (in Russian)
- Rudenko S. A. To the genesis of apatite deposits of the Khibiny massif. Zapiski Gornogo Instituta, vol. XLVII, iss. 2, 1964. (in Russian)
- Solodovnikova L. L. Feldspars of the Kukisvumchorr apatite deposit. Sb. "K mineralogii postmagmaticheskikh protsessov". LGU, 1959. (in Russian)
- Fiveg M. P. Apatite deposits of the Khibiny. Sb. "Geologicheskie issledovaniya agronomicheskikh rud SSSR". Tr. NIUIF, iss. 142, 1937. (in Russian)