Extreme compositional variation of pyrochlore-group minerals at the Oka carbonatite complex, Quebec: Evidence of magma mixing?

Canadian Mineralogist

Volumn 42, Issue 4, 2004, Pages 1159-1168

  Zurevinski, Shannon E ^a   Mitchell, Roger H ^a  

^a LAKEHEAD UNIVERSITY   (Canada)

Author keywords

Calcite carbonatite; Magma mixing; Oka carbonatite complex; Pyrochlore group minerals; Quebec

Indexed keywords

BACKSCATTERING; CALCIUM COMPOUNDS; CRYSTALLINE MATERIALS; GROWTH (MATERIALS); MINERAL RESOURCES; RARE EARTH ADDITIONS; RHEOLOGY; ROCKS; SILICATES; ZONING;

BACK-SCATTERED ELECTRON IMAGES; ENERGY-DISPERSIVE ANALYSIS; MAGMA COMPOSITION; PYROCHLORES;

MINERALOGY;

CARBONATITE; CRETACEOUS; IGNEOUS PROVINCE; MAGMA CHEMISTRY; MIXING; PYROCHLORE;

CANADA; NORTH AMERICA; QUEBEC [CANADA]; WESTERN HEMISPHERE; WORLD;

EID: 7744234677     PISSN: 00084476     EISSN: None     Source Type: Journal    
DOI: 10.2113/gscanmin.42.4.1159     Document Type: Article

References (13)

1. CHAKHMOURADIAN, A.R. (1996): On the development of niobium and rare-earth minerals in monticellite-calcite carbonatite of the Oka complex, Quebec. Can Mineral. 34, 479-484.
2. GOLD, D.P. (1963): The Relationship Between the Limestones and the Alkaline Igneous Rocks of Oka and St. Hilaire, Quebec. Ph.D. thesis, McGill Univ., Montreal, Quebec.
3. GOLD, D.P. (1967): Alkaline ultrabasic rocks in the Montreal area, Quebec. In Ultramafic and Related Rocks (P.J. Wylie, ed.). John Wiley and Sons, Inc., New York, N.Y. (288-302).
4. GOLD, D.P. (1972): The Monteregian Hills: ultra-alkaline rocks and the Oka carbonatite complex. Twenty-fourth International Geological Congress, Excursion Guidebook B-11, 1-47.
5. HOGARTH, D.D. (1961): A study of pyrochlore and betafite. Can. Mineral. 6, 610-633.
6. HOGARTH, D.D. (1989): Pyrochlore, apatite and amphibole: distinctive minerals in carbonatite. In Carbonatites: Genesis and Evolution (K. Bell, ed.). Chapman and Hall, London, U.K. (105-148).
7. HOGARTH, D.D., WILLIAMS, C.T. & JONES, P. (2000): Primary zoning in pyrochlore group minerals from carbonatites. Mineral. Mag. 64 683-697.
8. KALOGEROPOULOS, S.I. (1977): Geochemistry and Mineralogy of the St. Lawrence Pyrochlore Deposit, Oka, P. Q. M.Sc. thesis, Queen's Univ., Kingston, Ontario.
9. LUMPKIN, G.R. & EWING, R.C. (1995): Geochemical alteration of pyrochlore group minerals: pyrochlore subgroup. Am. Mineral. 80, 732-743.
10. NASRAOUI, M. & BILAL, E. (2000): Pyrochlores from the Lueshe carbonatite complex (Democratic Republic of Congo): a geochemical record of different alteration stages. J. Asian Earth Sci. 18, 237-251.
11. PERRAULT, G. (1968): La composition chimique et la structure cristalline du pyrochlore d'Oka, P.Q. Can. Mineral. 9, 383-402.
12. PETRUK, W. & OWENS, D. (1975): Electron microprobe analyses for pyrochlores from Oka, Quebec. Can. Mineral. 13, 282-285.
13. SHAFIQULLAH, M., TUPPER, W.M. & COLE, T.J.S. (1970): K-Ar age of the carbonatite complex, Oka, Quebec. Can. Mineral. 10, 541-552.