RARE EARTH ELEMENTS IN ROCKS AND MINERALS FROM ALKALINE PLUTONS OF THE KOLA PENINSULA, NW RUSSIA, AS INDICATORS OF ALKALINE MAGMA EVOLUTION
Abstract and keywords
Abstract (English):
In order to elucidate evolutionary paths for the alkaline ultramafic series of the Kola province, we studied distribution of rare earth elements REE in rocks and constituent minerals of the rock sequence dunite, clinopyroxenite, melilitolite, meltejgite, ijolite, nepheline syenite. Abundances of REE and other trace elements were measured in olivine, melilite, clinopyroxene, nepheline, apatite, perovskite, titanite, and magnetite. Distribution of most trace elements in Kovdor-type rocks is shown to differ fundamentally from that in the Khibiny alkaline ultramafic suite and to have been controlled by perovskite crystallization. Primary olivine melanephelinitic melts of the Kovdor series are demonstrated to be characterized by early crystallization of perovskite, the most important REE mineral. Perovskite co-precipitating with olivine and clinopyroxene leads to a sharp REE depletion of the residual melt, to produce REE-depleted derivatives, ijolites and nepheline syenites. By contrast, the genesis of the Khibiny alkaline ultramafic series was complicated by mixing of minor batches of phonolitic melt with the primary olivine melanephelinitic magma, which led to changes in the crystallization order of REE-bearing titanates and Ti-silicates and to enrichment of late melt batches in the most incompatible elements. As a result, Khibiny ijolites have the highest REE abundances, which are accommodated by high-REE apatite and titanite.

Keywords:
rare-earth elements, alkaline plutons, alkaline magma evolution, Kola Peninsula.
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References

1. Anders, Geochim. Cosmochim. Acta, v. 53, 1989., doi:https://doi.org/10.1016/0016-70378990286-X

2. Arzamastsev, Petrologiya, v. 1, no. 5, 1993.

3. Arzamastsev, Petrologiya, v. 6, no. 5, 1998.

4. Arzamastsev, SVEKALAPKO, EUROPROBE project, 6th Workshop, 2001.

5. Arzamastsev, Russian Journal of Earth Sciences, v. 3, no. 1, 2001.

6. Arzamastseva, Geochemistry International, v. 34, 1996.

7. Balagansky, Geotektonika, v. 2, 1998.

8. Bell, Canadian Mineralogist, v. 34, 1996.

9. Carmichael, American Mineralogist, v. 55, 1970.

10. Caroff, Lithos, v. 30, 1993., doi:https://doi.org/10.1016/0024-49379390002-T

11. Chernysheva, Geokhimiya, v. 8, 1991.

12. Dawson, Chem. Geol., v. 117, no. 1-4, 1994., doi:https://doi.org/10.1016/0009-25419490132-5

13. Dawson, J. Petrol., v. 36, no. 3, 1995.

14. Dudkin, Khibiny Carbonatites, 1984.

15. Edgar, Alkaline Igneous Rocks, edited by J. G. Fitton and B. G. J. Upton, v. 30, 1987.

16. Egorov, Ijolite-Carbonatite Plutonism, 1991.

17. Foley, Geochim. Cosmochim. Acta, v. 60, no. 4, 1996., doi:https://doi.org/10.1016/0016-70379500422-X

18. Galakhov, Petrology of the Khibiny Alkaline Massif, 1975.

19. Hornig-Kjarsgaard, J. Petrol., v. 39, no. 11/12, 1998., doi:https://doi.org/10.1093/petrology/39.11.2105

20. Irving, Geochim. Cosmochim. Acta, v. 45, no. 8, 1981., doi:https://doi.org/10.1016/0016-70378190224-6

21. Ivanikov, J. Petrol., v. 39, no. 11/12, 1998., doi:https://doi.org/10.1093/petrology/39.11.2043

22. Kogarko, Issues of Agpaitic Magmagenesis, 1977.

23. Kogarko, Lithos, v. 26, no. 1/2, 1990.

24. Kogarko, Geol. Rudn. Mestorozhd., v. 41, no. 5, 1999.

25. Kogarko, Contrib. Mineral. Petrol., v. 109, no. 1, 1991., doi:https://doi.org/10.1007/BF00687205

26. Kogarko, Alkaline Rocks and Carbonatites of the World, Part 2, Former USSR, 1995.

27. Korobeinikov, J. Petrol., v. 39, no. 11/12, 1998., doi:https://doi.org/10.1093/petrology/39.11.2033

28. Kramm, Lithos, v. 32, 1994., doi:https://doi.org/10.1016/0024-49379490041-8

29. Kramm, Lithos, v. 30, 1993., doi:https://doi.org/10.1016/0024-49379390004-V

30. Kravchenko, Geokhimiya, v. 5, 1992.

31. Kravchenko, Geokhimiya, v. 7, 1979.

32. Kukharenko, The Caledonian Assemblage of Ultramafic and Alkaline Rocks and Carbonatites of the Kola Peninsula and Northern Karelia, 1965.

33. Larsen, Lithos, v. 12, 1979., doi:https://doi.org/10.1016/0024-49377990022-7

34. Le Bas, Alkaline Igneous Rocks, edited by J. G. Fitton and B. G. J. Upton, Geol. Soc. Spec. Publ., v. 30, 1987.

35. Lloyd, Miner. Petrol., v. 57, no. 3-4, 1996., doi:https://doi.org/10.1007/BF01162359

36. Mitchell, Undersaturated Alkaline Rocks: Mineralogy, Petrogenesis and Economic Potential, edited by R. H. Mitchell, 1996.

37. Mitchell, Rare Earth Minerals: Chemistry, Origin and Ore Deposits, edited by A. P. Jones, F. Wall, and C. T. Williams, Mineral, Soc. UK, Ser. 6, 1996.

38. Mitchell, Alkaline Magmatism and the Problems of Mantle Sources, 2001.

39. Mitchell, Mineral. Mag., v. 52, 1988., doi:https://doi.org/10.1180/minmag.1988.052.366.04

40. Nielsen, Alkaline Igneous Rocks, edited by J. G. Fitton and B. G. J. Upton, Geol. Soc. Spec. Publ., v. 30, 1987.

41. Nielsen, Geokhimiya, v. 8, 1993.

42. Nielsen, Contrib. Mineral. Petrol., v. 126, 1997., doi:https://doi.org/10.1007/s004100050254

43. Onuma, J. Fac. Sci. Hokkaido University, v. 4, no. 17, 1976.

44. Onuma, Geochem. J., v. 15, no. 4, 1981.

45. Pan, Amer. J. Sci., v. 289, no. 1, 1989.

46. Pan, Contrib. Mineral. Petrol., v. 105, no. 5, 1990., doi:https://doi.org/10.1007/BF00302496

47. Rass, The Paragenetic Analysis of Zoned Minerals, 1986.

48. Shakhmurdyan, Zap. Vses. Mineral. O-va, v. 1, 1998.

49. Ternovoi, Carbonatitic Massifs and Their Economic Mineralization, 1977.

50. Veksler, Lithos, v. 26, no. 1/2, 1990.

51. Veksler, Contrib. Mineral. Petrol., v. 131, no. 4, 1998., doi:https://doi.org/10.1007/s004100050397

52. Veksler, J. Petrol., v. 39, no. 11/12, 1998., doi:https://doi.org/10.1093/petrology/39.11.2015

53. Verhulst, Lithos, v. 51, no. 1-2, 2000., doi:https://doi.org/10.1016/S0024-49379900072-9

54. Wilkinson, Contrib. Mineral Petrol., v. 38, 1983., doi:https://doi.org/10.1007/BF00371205

55. Woolley, Alkaline Rocks and Carbonatites of the World, Part 1, North and South America, 1987.

56. Worner, Contrib. Mineral. Petrol., v. 84, no. 2/3, 1983.

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