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Oka complex, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada

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Formerly: Oka, Oka complex, Deux-Montagnes Co., Québec, Canada

Carbonatite complex. The Oka complex is an elongated oval, double-ring structure 8 km long and 2-3 km wide, trending NW-SE.
It is one of the larger intrusions (approx. age 117-120 Ma) of the Monteregian alkaline province which includes such well known intrusions as Mont Saint-Hilaire. An oval-shaped carbonatite core is enclosed by ring-dykes of ultramafic rocks. It intrudes Precambrian rocks of the Grenville structural province.
The complex was intensely explored in the 1950s and significant deposits of niobium were found. There are a number of individual localities within the complex, which were explored by a number of mining interests, but only one mine, the St. Lawrence Columbium mine, has gone into production with two open pits and extensive underground works. The mine ceased operations in the 1970s and the open pits and underground works are water filled. A large part of the Nb-rich deposit remains unexploited.
The mineralogy of individual localities within the complex are not complete as most references tend to report minerals for the complex only.

Mineral List

Mineral list contains entries from the region specified including sub-localities


123 entries listed. 69 valid minerals. 2 (TL) - type locality of valid minerals.

Localities in this Region


The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

CHAKHMOURADIAN, A.R. (1996) On the development of niobium and rare-earth minerals in monticellite-calcite carbonatite in the Oka complex, Quebec. Canadian Mineralogist, 34, 479-484.

DEINES, P. (1970) The carbon and oxygen isotopic composition of carbonates from the Oka Carbonatite Complex, Quebec, Canada. Geochimica et Cosmochimica Acta, 34, 1199-1225.

EBY, G.N. (1973) Scandium geochemistry of the Oka carbonatite complex, Oka, Quebec. American Mineralogist,58, 819-825.

EBY, G.N. (1975) Abundance and distribution of the rare-earth elements and yttrium in the rocks and minerals of the Oka carbonatite complex, Quebec. Geochimica et Cosmochimica Acta, 39, 597-620.

FRIEL, J. & ULMER, G.C. (1974) Oxygen fugacity geothermometry of the Oka complex. American Mineralogist, 59, 1236-1241.

GIRAULT, J. (1966) Genèse et géochimie de l’apatite et de la calcite dans les roches liéesau complexe carbonatitiques et hyperalkaline d’Oka (Canada). Bulletin de la Société Française de Minéralogie, 89, 496-513.

GOLD, D.P. (1963) The relationship between the limestones and the alkaline igneous rocks of Oka and St. Hilaire, Quebec. Ph.D. Thesis, McGill University, Montreal. 354 p.

GOLD, D.P. (1967) Alkaline ultrabasic rocks in the Montreal area, Quebec. In: Ultramafic and Related Rocks, edited by P.J. Wyllie, 288-302. Robert E. Krieger Publ.Co. 464 p.

GOLD, D.P. (1969) The Oka carbonatite and alkaline complex. Guidebook GAC/MAC Annual meeting 1969, 43-62.

GOLD, D.P. (1972): The Monteregian Hills: ultra-alkaline rocks and the Oka carbonatite complex. 24th International Geological Congress (Montreal), Guidebook B-11.

GOLD, D.P., EBY, G.N. & VALLEÉ, M. (1986) Carbonatites, diatremes and ultra-alkaline rocks in the Oka area. Fieldtrip guidebook 21, GAC/MAC Meeting, Ottawa, 51p.

GOLD, D.P., VALLEÉ, M. & CHARETTE, J.-P. (1967) Economic geology and geophysics of the Oka Alkaline Complex, Quebec. Canadian Mining & Metallurgical Bulletin, 60, 1131-1144.

GRUNENFELDER, M.H., TILTON, F.R., BELL, K. & BLENKINSOP, J. (1986) Lead and strontium isotope relationships in the Oka carbonatite complex. Geochica et Cosmochimica Acta, 50, 461-468.

KALOGEROPOULOS, S.I. (1977) Geochemistry and mineralogy of the St. Lawrence pyrochlore deposit, Oka, P.Q. Unpublished M.Sc. thesis, Queen’s Umiversity, Kingston, Ontario.

MARIANO, A. N., 1985. The paragenesis of the Bond Zone of the Oka Carbonatite Complex, Oka, Quebec. Senior Thesis, Bucknell Univ., Lewisburg, Pennsylvania.

MARIANO, A. N. & ROEDER, P. L. (1989) Wöhlerite: chemical composition, cathodoluminescence and environment of crystallization. Canadian Mineralogist, 27, 709-720.


MITCHELL, R.H., CHOI, J.B., HAWTHORNE, F.C., McCAMMON, C.A. & BURNS, P.C. (1998) Latrappite; a re-investigation. Canadian Mineralogist, 36, 107-116.

NICKEL, E.H. (1960) A zirconium-bearing garnet from Oka, Quebec. Canadian Mineralogist, 6, 549-550.

NICKEL, E.H. (1966) Latrappite - a proposed new name for the perovskite-type calcium niobate mineral from the Oka area of Quebec. Canadian Mineralogist, 8, 122-123.

NICKEL, E.H. & MCADAM, R.C. (1963): Niobian perovskite from Oka, Quebec; a new classification for minerals of the perovskite group. Canadian Mineralogist, 7, 683-697.

NICKEL, E.H., ROWLAND, J.F. & MAXWELL, J.A. (1958): The composition and crystallography of niocalite. Canadian Mineralogist 6, 264-272.

PERRAULT, G. (1968) La composition chimique et la structure crystalline du pyrochlored’Oka, P.Q. Canadian Mineralogist, 9, 383-402 (in French).

PETRUK, W. & OWENS, D. (1975) Electron microprobe analyses for pyrochlores from Oka, Quebec. Canadian Mineralogist, 13, 282-285.

POULIOT, G. (1970) Study of carbonatitic calcites from Oka, Quebec. Canadian Mineralogist, 10, 511-540.

ROWE, R.B. (1955) Notes on columbian mineralization, Oka district, Two Mountains County, Quebec, Geological Survey of Canada Paper 54-22.

ROWE, R.B. (1958) Niobium (columbium) deposits of Canada, Geological Survey of Canada, Economic Geology, Ser., 18.

SABINA, A.P. (1968), revised (1983) Rocks and Minerals for the collector. Kingston, Ontario to Lac St-Jean, Quebec. Geological Survey of Canada Paper 67-51 (1968), Misc. Report No. 32 (1983), 46-49.

SHAFIQULLAH, M., TUPPER, W.M. & COLE, T.J.S. (1970) K-Ar age of the carbonatite complex, Oka, Quebec. Canadian Mineralogist, 10, 541-552.

VILLENEUVE, E.M. (1990) Kimzeyite from alnoites at Ile Bizard and Oka, Quebec. Abstracts with Program GAC-MC Annual Meeting, Vancouver.

WATKINSON, D.H. (1972) Electron microprobe analysis of melilite and garnet from the Oka complex, Quebec. Canadian Mineralogist, 11, 457-463.

WATKINSON, D.H. (1972) Experimental studies bearing on the origin of the alkalic rock-carbonatite complex and niobium mineralization at Oka, Quebec Canadian Mineralogist, 10, 350-361.

WEI CHEN., SIMONETTI, A. & BURNS, P.C. (2013) A combined geochemical and geochronological investigation of niocalite. Canadian Mineralogist 51, 785-800.

WEN J.,(1985)Isotope geochemistry of the Oka carbonatite complex, Quebec. MSc. thesis, Carleton University, Ottawa, 67 p

WEN, J., BELL, K., & BLENKINSOP, J. (1987): Nd and Sr isotope systematics of the Oka complex, Quebec, and their bearing on the evolution of the sub-continental upper mantle: Contributions to Mineralogy and Petrology, 97, pp. 433-437

ZUREVINSKI, S.E. AND MITCHELL, R.H. (2004) Extreme compositional variation of pyrochlore-group minerals at the Oka carbonatite complex, Canadian Mineralogist, 42, 1159-1168.

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