Abstract
Carbonate phases, some rich in Na2O and comparatively rich in SrO and BaO, occur as inclusions in perovskite and calzirtite (Ca2Zr5Ti2O16) in the carbonatite of the Guli complex, Siberia. This is the first record of alkali carbonates, akin to ‘nyerereite’ [Na2Ca(CO3)2], in plutonic igneous rocks. The inclusion populations suggest that the parental magma of the complex was Ca-rich but developed Na-rich differentiates during the latest stages. This points to the dominant calcic carbonatites of the complex not being derivatives of alkali-rich parental carbonatites. These alkali-rich carbonate inclusions (and rare inclusions of djerfisherite) have been preserved due to the resistance of perovskite and calzirtite to processes of leaching, hydrothermal alteration and weathering.
Similar content being viewed by others
References
Aspden J (1980) The mineralogy of primary inclusions in apatite crystals extracted from the Alno ijolite. Lithos 13:263–268
Aspden JA (1981) The compositions of solid inclusions and the occurrence of shortite in apatites from the Tororo carbonatite complex of eastern Uganda. Min Mag 44:201–204
Chernysheva Ye A, Petrov LL, Chernyshev LV (1976) Distribution of fluorine between co-existing phlogopite and apatite in carbonatites and the behaviour of fluorine in the carbonatite-forming process. Geochem Int 13:14–22
Clarke DB (1979) Synthesis of nickeloan djersfisherites and the origin of potassic sulphides at the Frank Smith mine. In: Boyd FR, Meyer HOA (eds) Kimberlites, diatremes and diamonds: their geology, petrology and geochemistry. Proc 2nd Kimberlite Conf 2: 300–308
Cooper AF, Gittins J, Tuttle OF (1975) The system Na2CO3−K2CO3−CaCO3 at 1 kilobar and its significance in carbonatite petrogenesis. Amer J Sci 275:534–560
Czamanske GK, Erd RC, Sokolova MN, Dobrovol'skaya MG, Dmitrieva MT (1979) New data on rasvumite and djerfisherite. Am Miner 64:776–778
Dawson JB (1962) Sodium carbonate lavas from Oldoinyo Lengai, Tanganyika. Nature 195:1075–1076
Dawson JB, Fuge R (1980) Halogen content of some African primary carbonatites. Lithos 13:139–143
Dawson JB, Garson MS, Roberts B (1987) Altered former alkalic carbonatite from Oldoinyo Lengai, Tanzania: inferences for calcite carbonatite lavas. Geology 15:765–768
Gaspar JC, Wyllie PJ (1982) Barium phlogopite from the Jacupiranga carbonatite, Brazil. Am Miner 67:997–1000
Gittins J (1989) The origin and evolution of carbonatite magmas. In: K Bell (ed) Carbonatites: genesis and evolution. Unwin Hyman, London, pp 580–600
Gold DP (1966) The minerals of the Oka carbonatite and alkaline complex, Oka, Quebec. Min Soc India Int Min Assoc Vol: 109–125
Kapustin YL (1980) The mineralogy of carbonatites. Amerind Publ Co, New Delhi, India
Keller J (1989) Extrusive carbonatites and their significance. In: K Bell (ed) Carbonatites genesis and evolution. Unwin Hyman, London, pp 70–88
Le Bas MJ (1981) Carbonatite magmas. Min Mag 44:133–140
Le Bas MJ, Aspden JA (1981) The comparability of carbonatitic fluid inclusions in ijolites and natrocarbonatite lava. Bull Volc 44:429–438
Nesbitt BE, Kelly WC (1977) Magmatic and hydrothermal inclusions in carbonatite of the Magnet Cove complex, Arkansas. Contrib Min Petr 63:271–294
Ngwenya BT, Bailey DK (1990) Kaluwe carbonatite, Zambia; an alternative to natrocarbonatite. J Geol 147:213–216
Raber E, Haggerty SE (1979) Zircon-oxide reactions in diamond-bearing kimberlites. In: Boyd FR, Meyer HOA (eds) Kimberlites, diatremes, and diamonds: their geology, petrology and geochemistry. Proc 2nd Kimberlite Conf 1: 229–240
Rankin AH (1977) Fluid-inclusion evidence for the formation conditions of apatite from the Tororo carbonatite complex of eastern Uganda. Min Mag 41:155–164
Ringwood AE, Kesson SE, Ware NG, Hibberson W, Major A (1979) Immobilisation of high level nuclear reactor wastes in SYNROC. Nature 278:219–223
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kogarko, L.N., Plant, D.A., Henderson, C.M.B. et al. Na-rich carbonate inclusions in perovskite and calzirtite from the Guli intrusive Ca-carbonatite, polar Siberia. Contr. Mineral. and Petrol. 109, 124–129 (1991). https://doi.org/10.1007/BF00687205
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00687205