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St Lawrence Columbium Mine, Oka complex, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada
Latitude: 45°30'4"N
Longitude: 74°1'49"W
Longitude: 74°1'49"W
Inactive niobium mine with two open pits and underground workings (now water filled), in the Oka carbonatite complex. The mine opened in 1961 and ceased opertions around 1977. During its operation it was one of largest niobium mines in the world. Significant reserves of pyrochlore (the main ore mineral)remain at the deposit. The processing plant and headframe were demolished in 1992 and the property including dumps are fenced in. Access is not permitted.
The mineral list is curiously short and incomplete as most of the Oka related literature lacks specifics on the minerals found in the mine. Considering the huge amount of material removed from two open pits and underground, the mineralogy must be more extensive but remain undocumented.
Mineral List
16 entries listed. 12 valid minerals.
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
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References
GOLD, D.P. (1972): The Monteregian Hills: ultra-alkaline rocks and the Oka carbonatite complex. 24th International Geological Congress (Montreal), Guidebook B-11.
PETRUK, W. & OWENS, D. (1975) Electron microprobe analyses for pyrochlores from Oka, Quebec. Canadian Mineralogist, 13, 282-285.
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.
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.
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.
PETRUK, W. & OWENS, D. (1975) Electron microprobe analyses for pyrochlores from Oka, Quebec. Canadian Mineralogist, 13, 282-285.
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.
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.
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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