 | | Journal (article/letter/editorial) | | composition exhibits dramatic lateral variations. Mont Oka in the west is mainly carbonatitic (56%) and...and nordmarkites increases: Mont Shefford (48%), Mont Brome (57%), Mont Mégantic (100%) (Eby, 1985)....(87–79 Ma), and the Posos de Caldas phonolite–nepheline syenite complex (77–51 Ma). This series resembles...These are primarily Na complexes of agpaitic nepheline syenites, alkali granites, and carbonatites, along...Kenyan plateau phonolites are the world’s largest nepheline syenite occurrences. The general geochemistry |  | | Journal (article/letter/editorial) | | Printed in The Netherlands The petrology of the Mont Saint Hilaire complex, southern Quebec: An alkaline...1Geological Survey' of Canada, 601 Booth Street, Ottawa, Ont. KIA 01:'8 (Canada) 2Department of Earth...1A 1 (Canada) LITHOS Currie, K.L., Eby, G.N. and Gittins, J.. 1986. The petrology of the Mont Saint...gabbro-peralkaline syenite association. Lithos, 19:65-81. The Mont Saint Hilaire complex consists of an older (133...younger (122 Ma) suites, one a thick ring dyke of nepheline-olivine diorite to monzonite, and the other a |  | | Journal (article/letter/editorial) | | University of Ottawa, Ottawa, Ontario K1N 6N5, Canada Abstract The Late Cretaceous rocks of the Abu...comprise phonolite, trachyte, syenogabbro, essexite, nepheline syenite, and quartz syenite, as well as quartz-...unit and the essexitic xenoliths found in the nepheline syenite [(La/Yb)n in the ranges 12.0–13.7 and...comagmatic relationship for the phonolites and nepheline syenites, both formed by simple fractional crystallization...pegmatite, as well as one sample of the xenolith-rich nepheline syenite and one of the hematitized syenite are |  | | Journal (article/letter/editorial) | | trachytes. The investigated samples include: low-nepheline normative phonolite, kaersutite-bearing peralkaline...(1998) has shown that the mafic lavas include nepheline-analcime basalts, basanitic ankaramites, olivine...(mole % [(Na2O + K 2O)/Al2O3], Q: quartz, Ne: nepheline, Ac: acmite, C: corundum. *: total Fe as Fe2O3;...pyroxene analyses show less than 2 wt.% MnO. In the nepheline syenite of Los Archipelago, the prefix manganoan...constraints on the petrogenesis of the Mont Brome alkaline complex, Canada. J. Petrol., 35, 11271153. Collins |  | | Book | | MONT SAINT-HILAIRE: HISTORY, GEOLOGY, MINERALOGY About the cover The striking specimen shown on...specimens collected at Mont Saint-Hilaire; it features the species that made Mont Saint-Hilaire so well...cover feature two species originally described from Mont Saint-Hilaire; they remain unique to that locality...Monteregianite is named after the Monteregian Hills, of which Mont Saint-Hilaire is a member; carletonite is named...Carleton University, where much of the early work on Mont Saint-Hilaire minerals was carried out. The monteregianite-(Y) |  | | Journal (issue) | | Ann Arbor, MI Andrew C. Roberts Geol. Surv. of Canada Ottawa George W. Robinson Seaman Mineral Museum...mineral localities: The Francon Quarry, Montréal, Québec, Canada . . . . . . . . . . . . . . . . . . . 5 by...annual FM-MSA-TGMS Tucson Mineralogical Symposium: CANADA! . . . . . . . . . . . . . . . . . . . 65 Chairman:...matrix, from the Francon quarry, Montréal, Québec, Canada. (See the article in this issue on this famous...Beaconsfield, Québec, Canada H9W 4H8 László Horváth and Elsa Pfenninger-Horváth 594 Main Road Hudson, Québec, Canada |  | | Journal (issue) | | INTRODUCTION In its short history as a mineral locality, Mont Saint-Hilaire has become a contemporary classic... To date, 250 species have been identified from Mont Saint-Hilaire (including poly types), 16 of which...potentially new species. While the minerals for which Mont Saint-Hilaire is the type locality have been well-characterized...number of rare species have been identified for which Mont Saint-Hilaire is the second known occurrence. Some...to six years have been particularly productive at Mont Saint-Hilaire, especially in terms of the rare species |  | | Report (issue) | | Paleoproterozoic subduction beneath the Slave craton, Canada: Earth and Planetary Science Letters, v. 254, p...and applications: Mineralogical Association of Canada, Short Course Series, v. 29, p. 239–243. Vauchez...and thin lava flows, intruded by later-stage nepheline monzodiorite dikes (Downie and Wilkinson, 1972)...the basanitic lavas and dikes, but has scarce nepheline microcrysts in its groundmass. Mawenzi The unusual...phenocrysts, which are also found as groundmass phases. Nepheline may occur as groundmass microcrysts, but it remains |
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