Carbonate-carbonate immiscibility, neighborite and potassium iron sulphide in Oldoinyo Lengai natrocarbonatite

Mineralogical Magazine

Volumn 61, Issue 6, 1997, Pages 779-789

  Mitchell, Roger H ^a  

^a LAKEHEAD UNIVERSITY   (Canada)

Author keywords

Carbonatite; Liquid immiscibility; Neighborite; Oldoinyo Lengai; Potassium iron sulphide; Sylvite; Tanzania

Indexed keywords

CARBONATITE; LIQUID IMMISCIBILITY; NEIGHBORITE; POTASSIUM IRON SULPHIDE; SYLVITE;

TANZANIA, OLDOINYO LENGAI;

EID: 0031414085     PISSN: 0026461X     EISSN: None     Source Type: Journal    
DOI: 10.1180/minmag.1997.061.409.03     Document Type: Article

References (25)

1. 3 perovskite. Phys. Chem. Minerals, 23, 141-50.
2. 3, a new mineral from the Green River Formation, South Ouray, Utah. Amer. Mineral., 46, 379-93.
3. Church, A.A. and Jones, A.P. (1995) Silicate-carbonate immiscibility at Oldoinyo Lengai. J. Petrol., 36, 869-89.
4. 3. Amer. Mineral. 65, 477-82.
5. Dawson, J.B., Pinkerton, H., Norton, G.E., Pyle, D.M., Browning, P., Jackson, D. and Fallick, A.E. (1995) Petrology and geochemistry of Oldoinyo Lengai lavas extruded in November 1988: magma source, ascent and crystallization. In Carbonatite Volcanism (K. Bell and J. Keller, eds.) Springer-Verlag, Berlin, 47-69.
6. Dawson, J.B., Pyle, D.M. and Pinkerton H. (1996) Evolution of natrocarbonatite from a wollastonite nephelinite parent: evidence from the June, 1993 eruption of Oldoinyo Lengai, Tanzania. J. Geol. 104, 41-54.
7. Eichhorn, B. W. (1994) Ternary transition metal Sulfides. Prog. in Inorganic Chem. 42, 139-240.
8. Gittins, J. (1989) The origin and evolution of carbonatite magmas. In Carbonatites: Genesis and Evolution (K. Bell, ed.), Unwin Hyman, London, 580-600.
9. Gittins, J. and Jago, C. (1991) Extrusive carbonatites: their origins reappraised in the light of new experimental data. Geol. Mag., 128, 301-5.
10. Goldschmidt, V.M. (1926) Geochemische Verteilungsgesetze der Element VII. Skrifter Norske Videnskaps Akademie Klasse 1 Matematisk Naturvidenskaplig Klasse, Oslo.
11. Jago, B.C. (1991) The role of fluorine in the evolution of alkali-bearing carbonatite magma and the formation of carbonatite hosted apatite and pyrochlore deposits. Ph.D. Thesis, University of Toronto, Ontario, Canada, 374 pp.
12. Jago, B.C. and Gittins, J. (1991) The role of fluorine in carbonatite magma evolution. Nature, 349, 56-8.
13. Keller, J. and Krafft, M. (1990) Effusive natrocarbonatite activity at Oldoinyo Lengai, June 1988. Bull. Volcanol., 52, 629-45.
14. Keller, J. and Spettel, B. (1995) Trace element composition and petrogenesis of natrocarbonatite. In Carbonatite Volcanism (K. Bell and J. Keller, eds.) Springer-Verlag, Berlin, 70-86.
15. 2, a new mineral and the new isomorphous series olekminskite-paralstonite. Zap. Vses. Mineral. Obshch., 120, 89-96.
16. LeBas, M.J. (1989) Diversification of carbonatite. In Carbonatites: Genesis and Evolution (K. Bell, ed.), Unwin Hyman, London, 428-47.
17. Ludekens, W.L.W, and Welch, A.J.E. (1952) Reactions between metal oxides and fluorides: some new double-fluoride structures of type ABF3. Acta Cryst., 5, 841.
18. Peterson, T.D. (1990) Petrology and genesis of natrocarbonatite. Contrib. Mineral. Petrol., 105, 143-55.
19. 4, Tl). Materials Res. Bull., 4, 45-50.
20. Twyman, J.D. and Gittins, J. (1987) Alkalic carbonatite magmas: parental or derivative? In Alkaline Igneous Rocks (J.G. Fitton and B.J.G. Upton eds.), Blackwell, London, 85-94.
21. Vetsch, P. (1995) Volcanic activity of Oldoinyo Lengai (Tanzania) in December 1995. Société de volcanologie Genève. (Video cassette)
22. Vorobyev, E.I. and Piskunova, L.F. (1985) A new form of exsolution in natural calcite. Doklady Akadem. Sci. Earth Sci. Sect., 282, 160-3.
23. Vorobyev, E.I. and Piskunova, L.F. (1987) Subsolidus transformations of strontium- and barium-bearing carbonatite calcite. Doklady Akadem. Sci. Earth Sci. Sect., 296, 141-6.
24. Waldbaum, D.R. (1969) Thermodynamic mixing properties of NaCl-KCl liquids. Geochim. Cosmochim. Acta, 52, 2351-6.
25. 3 perovskite. J. Geophys. Res., 99, 2871-85.