 | | Journal (article/letter/editorial) | | oxygen ~topic ~rn~~on of ~~~at~ the Oka Carbonatite complex, Quebec, Canada PETER from DEINES Department...awepted ira re~~sea~o~ 5 Jum 1970) Abstract-X%e Oka complex is a carbonatite belonging to the alkaline...hundred and fifty carbonatite rook samples from the Oka carbonatite complex were analyzed for the carbon...was established by X-ray diffraction methods. Calcite and dolomite were the only major carbonate phases...standard methods given elsewhere (DEICES,1967). Calcite-dolomite mixtures were analyzed utilizing the double |  | | Journal (article/letter/editorial) | | Springer-Verlag 1984 A periclase-dolomite-calcite carbonatite from the Oka complex, Quebec, and its calculated...USA Abstract. The eutectic mineral assemblage calcite-dolomite- periclase-apatite-forsterite-magnes...ite-alabandite in a carbonatite dike within the Oka complex, Quebec, buffers the fugacities (and partial...that excess H20 lowers the melting temperature of calcite to geologically reasonable values (675 ~ C at i...determined. An unusual carbonatite dike on Husereau Hill in the Oka complex (Gold 1967, 1972) provides a unique |  | | Journal (article/letter/editorial) | | reported here for constituent minerals from the Oka carbonatite complex, which is associated with the...contamination during the petrogenetic history of the Oka complex. Instead, the isotopic variations reported... 1994). The Cretaceous Oka carbonatite complex within southern Québec (Canada) contains both carbonatite...reveal that the magmatic activity (maximum extent) at Oka was a prolonged event, which occurred between 109...compositions of calcite and apatite from both carbonatite and associated silicate rocks at Oka. Previous investigations |  | | Journal (article/letter/editorial) | | Geology,Universityof Toronto,Toronto,OntarioM5S 38l, Canada The opening thrust of Treiman and Essene'sreply...too simple." We are agreedthat the rock at Husereau Hill is magmatic and that it matters little whether...addition of HrO extendsthe liquidus field for calcite down to about 650 oC.. . ." One of us (J.G.) was...2l), in referringto the beginning of melting of calcite at 740 oC, "only a trace of liquid is developed...equilibrated with rather different fluxes than did the Husereau dike. The widespread . . . (fenitization) associatedwith |  | | Journal (article/letter/editorial) | | Springer-Verlag 1987 Nd and Sr isotope systematics of the Oka complex, Quebec, and their bearing on the evolution... Carleton University, Ottawa, Ontario K1S 5B6, Canada Abstract. A detailed isotopic study of minerals...and whole rocks from the Cretaceous Oka complex, Quebec, Canada, shows a very small variation in initial...Assuming an age of 109 M a for the complex, apatite, calcite, garnet, melilite, monticellite, olivine and pyroxene...depleted in the L I L elements. The new data from Oka suggest that the depleted source may have remained |  | | Journal (article/letter/editorial) | | Lead and strontium isotope relationships in the Oka ~~~tite complex, Quebec M.H. Department of &&&al...Geology, &a&on University, Ottawa, Ontario, KlS 5B6, Canada (Rec&ed March 22, 1985;acceptedin revisedform Decemk...compositions are presented for 8 calcite, 1 pyrite and 1 melilite separates from the Oka, Quebec, carbonatite complex...complex. Pyrite, melilite and two calcite samples with small in situ decay corrections yield similar...of one ok&e and a sampleof countryrockgneissnear Oka contain Pbwith isotopiccompositionstbatillustrate |  | | Journal (article/letter/editorial) | | University of Toronto, Toronto, Ontario M5S 381, Canada Ansrucr Uncertainty exists about the composition...offered in a study of a carbonatite specimenfrom Oka, Quebec,by Treiman and Essene(1984), who calculated...carbonatitemagma might exhibit a con- lowering the liquidi of calcite-bearingsystemsto petrotinuous transition into such...carbonatite intrusion may, and carbonatite in the Oka complex in which they concluded probably does,undergo...It consistslargely of possible dike" on Husereau Hill in the Oka carbonatite an assertionthat three of |  | | Journal (article/letter/editorial) | | and trace elements in calcite and apatite, and U–Pb ages of apatite from the Oka carbonatite complex:...online 1 May 2012 Keywords: Apatite Calcite Geochronology Carbonatite Oka Laser ablation a b s t r a c t...determination of major and trace element compositions of calcite and apatite, and U–Pb ages of apatite for carbonatites...and ijolites from the Oka carbonatite complex (Canada). Both apatite and calcite are rare earth element...into apatite relative to calcite. Trace element abundances for apatite and calcite both within and between |  | | Journal (article/letter/editorial) | | aÊkermanite; an anorthite; badd baddeleyite; cc calcite; cen clinoenstatite; di diopside; ¯uorphlog ¯uorphlogopite;...*CaMgSi2 O6 diopside *4CaMgSi2 O6 diopside CaCO3 calcite Ca2 SiO4 larnite NaAlSi3 O8 albite...magnetite, 10.5% apatite, 7% dolomite) and 30% calcite can produce residual liquid that is quartz normative...normative but still contains 67% normative calcite. Nothing approaching this residual composition has been...Lawrence Pit, Oka, Quebec. 4 Prairie Lake, Ontario; Gross Brukkaros, Namibia. 5 Bond zone, Oka. 6, 7 PMC |  | | Book | | Mineralogical Association of Canada Association mineralogique du canada 14 Also in this series Encyclopedia...(1998) J. Delvigne Mineral Species Discovered in Canada and Species Named after Canadians Special Publication...F. Martin c 2019 Mineralogical Association of Canada All rights reserved. No part of this publication...publishers. Printed in Canada on acid-free paper Library and Archives Canada Cataloguing in Publication...(1962-) Published by the Mineralogical Association of Canada ISBN: 978-0-921294-61-0 1. Mont Saint-Hilaire, |  | | Book (volume) | | 3.1 Simple Sulfides Sphalerite from the 8roken Hill Lode, New South Wales, Australia, differs in its...sphalerite concentrates (except for North 8roken Hill, which comprises the bulk raw zinc concentrate)...South Zinc Corp. New 8roken 8roken Hill*l Hill Consol. 8roken Hill*l No.3lens 3.3 to 1.6; 2.4(n=6) 2...and 1.87% was estimated for North and South 8roken Hill, respectively. Mn-containing sphalerites were described...(solar) gas; a deposition from a eutectic melt (Husereau Hili), or a liquid segregation in the groundmass |
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