Sylvite and fluorite microcrysts, and fluorite-nyerereite intergrowths from natrocarbonatite, Oldoinyo Lengai, Tanzania

Mineralogical Magazine

Volumn 70, Issue 1, 2006, Pages 103-114

  Mitchell, R H ^a  

^a LAKEHEAD UNIVERSITY   (Canada)

Author keywords

Alabandite; Carbonatite; Fluorite; Nyerereite; Oldoinyo Lengai; Sylvite; Tanzania

Indexed keywords

COMPOSITION; CRYSTAL GROWTH; CRYSTAL MICROSTRUCTURE; CRYSTALLIZATION; FLUORSPAR;

ALABANDITE; CARBONATITE; NYEREREITE; SYLVITE; TANZANIA;

MINERALOGY;

LAVA; VOLCANIC ERUPTION;

AFRICA; EAST AFRICA; OLDOINYO LENGAI; SUB-SAHARAN AFRICA; TANZANIA;

EID: 33645522101     PISSN: 0026461X     EISSN: None     Source Type: Journal    
DOI: 10.1180/0026461067010316     Document Type: Article

References (12)

1. Church, A.A. and Jones, A.P. (1995) Silicate-carbonatite immiscibility at Oldoinyo Lengai. Journal of Petrology, 36, 869-889.
2. Dawson, J.B. (1989) Sodium carbonatite extrusions from Oldoinyo Lengai, Tanzania: Implications for carbonatite genesis. Pp. 255-277 in Carbonatites: Genesis and Evolution (K. Bell, editor). Unwin Hyman, London.
3. 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. Pp. 47-69 in: Carbonatite Volcanism (K. Bell and J. Keller, editors). Springer-Verlag, Berlin.
4. 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. Journal of Geology, 104, 41-54.
5. 5: a new mineral of the burbankite group. Zapiskii Vsesoyuznovo Mineralogischeskovo Obshschestva, 111, 321-324 (in Russian).
6. 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. PhD thesis, University of Toronto, Ontario, Canada 374 pp.
7. Jago, B.C. and Gittins, J. (1999) Mn and F-bearing rasvumite in natrocarbonatite at Oldoinyo Lengai Volcano, Tanzania. Mineralogical Magazine, 63, 53-55.
8. Keller, J. and Krafft, M. (1990) Effusive natrocarbonatite activity at Oldoinyo Lengai, June 1988. Bulletin Volcanologie, 52, 629-645.
9. Mitchell, R.H. (1997) Carbonate-carbonate immiscibility, neighborite and potassium iron sulphide in Oldoinyo Lengai natrocarbonatite. Mineralogical Magazine, 61, 779-789.
10. Mitchell, R.H. and Belton, F. (2004) Niocalite-cuspidine solid solution and manganoan monticellite from natrocarbonatite, Oldoinyo Lengai, Tanzania. Mineralogical Magazine, 68, 787-799.
11. Peterson, T.D. (1990) Petrology and genesis of natrocarbonatite. Contributions to Mineralogy and Petrology, 105, 143-155.
12. Waldbaum, D.R. (1969) Thermodynamic mixing properties of NaCl-KCl liquids. Geochimica et Cosmochimica Acta, 52, 2871-2875.