 | | Journal (article/letter/editorial) | | production of Nb, with the primary St. Honoré carbonatite and other sources accounting for only for 7 and...individual petrographically-defined units of carbonatite contain distinct suites of pyrochlore. Bulk rock...10 times or more above those of the primary carbonatite. Commonly, pyrochlores in laterites are fine grained...and 1%, respectively. Mining at the Catalão-I carbonatite was discontinued in 2001, although there is a...occurrences of carbonatite are currently being evaluated [e.g. Aley and Upper Fir (Canada); Elk Creek (USA)] or |  | | Journal (article/letter/editorial) | | architecture beneath the southern Midcontinent (USA) and controls on Mesoproterozoic iron-oxide mineralization...Missouri Nebraska 40° -86° Eastern Granite Rhyolite Province r nt 42° -88° Illinois Basin Elk Creek...iron province B. -96° 42° REE-bearing carbonatite (Elk Creek, NE; Hicks Dome, IL) Fault zone or fault...Belt Washington County Barite district Camels Hump Centr a Sou the r evie Indian Creek Boss 37°30'...or occurrence Early-Middle Permian Hicks Dome carbonatite (270 +/- 2 Ma [Reynolds et al., 1997]); Thorium |  | | Report (issue) | | Cover. The Mountain Pass Mine, San Bernardino County, California, was the only active producer of rare-earth...United States in 2013. The orebody is a tabular carbonatite intrusion and is thought to be the largest REE....O6 Rare-Earth-Element-Mineral Formation in Carbonatite Magmas.....................................O7...Photograph of the Mountain Pass Mine in San Bernardino County, California, which was the only active producer...recent years, REEs have been produced from large carbonatite bodies mined at the Mountain Pass deposit in |  | | Journal (article/letter/editorial) | | tantalum, tantaloniobates, carbonatite, nepheline syenite, alkali granite, syenite, supercontinent cycle DOI:...(Fennoscandian) Shield, namely, Siilinjärvi carbonatite and Saharjok nepheline–syenite (Zozulya et al., 2007). In the...(26) Bolshetagninskoe; (27) Saint-Honoré; (28) Elk Creek; (29) Afrikanda; (30) Aley; (31) Upper Fir; (32)...Mabouni Beloziminskoe Bolshetagninskoe Saint-Honoré Elk Creek Afrikanda Aley Upper Fir Chuktukon Toongi Baerzhe...as, alkali syenite; cb, carbonatite; h, hydrothermal ore; ns, nepheline syenite; s, syenite; tp, trachyte-porphyry |  | Duke, Genet Ide, Carlson, Richard W., Frost, Carol D., Hearn, B.C., Eby, G. Nelson (2014) Continent-scale linearity of kimberlite–carbonatite magmatism, mid-continent North America. Earth and Planetary Science Letters, 403. 1-14 doi:10.1016/j.epsl.2014.06.023 | Journal (article/letter/editorial) | | com/locate/epsl Continent-scale linearity of kimberlite–carbonatite magmatism, mid-continent North America Genet...online xxxx Editor: B. Marty Keywords: kimberlite carbonatite Sr–Nd–Hf–Pb isotope geochemistry mantle reservoirs...b s t r a c t Cretaceous–Tertiary kimberlite–carbonatite magmatism in mid-continent North America extends...sources and causes of intraplate kimberlite and carbonatite magmatism is complicated because of their isotopic...the east coast, which include the Montreal Oka carbonatite, Monteregian Hills, and White Mountain series |  | | Report (issue) | | showing the subsurface geology of the Saint-Honoré carbonatite complex in southern Quebec, Canada, and a schematic...7 ), which are found in some alkaline granite-syenite complexes (that is, igneous rocks containing sodium-...particularly carbonatites (for example, the Araxá carbonatite in Brazil). A Other oxide minerals, such as...latrappite is the main ore mineral at the Oka carbonatite complex in Quebec, Canada. Microlite is the tantalum-rich...alkaline granite and syenite-hosted deposits. In addition, some alkaline graniteand syenite-hosted deposits |  | | Journal (article/letter/editorial) | | by the prevalence of deposits associated with carbonatite complexes. DOI: 10.1134/S1028334X19070092 By...(b) nepheline syenites (foidic type); and (c) carbonatite complexes (carbonatitic type). Some of the deposits...share of these deposits is especially high in carbonatite complexes. The present report does not single...located at the Baltic Shield (the carbonatite Siilinjärvi and nepheline syenite Saharjok 751 752 TKACHEV...Zima; 26, Bolshaya Tagna; 27, Saint-Honoré; 28, Elk Creek; 29, Afrikanda; 30, Aley; 31, Upper Fir; 32, Chuktukon; |  | | Journal (article/letter/editorial) | | placer deposits and weathered crusts overlying carbonatite and peralkaline complexes account for the majority...majority of Ta production. Several carbonatite-related deposits (e.g. Upper Editorial handling: D. Huston...Weathered crusts overlying carbonatite complexes in Brazil and one hard rock carbonatite deposit in Canada account...5.0–5.5 6–6.5 6 Reference Pegmatites and carbonatite complexes 7.3 5.2–5.7 4.3–5.9 5.4 NA 5...(2004) Carbonatite complexes Pegmatites and peralkaline complexes Peralkaline and carbonatite complexes |  | | Book | | Interpretations for the Precambrian, Midcontinent USA M.P. Car/son, S.B.Treves, R.J. Goble, A. Xu ......the Grenvillian Event of the Hudson Highlands, NY, USA A.E. Gates .... ..................................Geophysics University of Oklahoma Norman, OK 73019 USA Trustee Treasurer Stephen Marshak Department of...Geology University of Illinois Urbana, IL 61801 USA Trustee Secretary A. Krishna Sinha Department of...Blacksburg, VA 24061 USA Trustee Marvin Carlson Nebraska Geological Survey University of Nebraska Lincoln, NE |  | | Journal (article/letter/editorial) | | Nb and REE Distribution in the Monte Verde Carbonatite–Alkaline–Agpaitic Complex (Angola) Sandra Amores-Casals... Abstract: The Angolan alkaline–carbonatite complex of Monte Verde has a semi-circular shape...arranged minor bodies of other alkaline rocks and carbonatite magmatic breccias. This rock association is hosted...are concentrated in pyrochlore crystals in the carbonatite and alkaline breccias. Magmatic fluornatropyrochlore...crystallize as late minor secondary minerals into carbonatite breccia and alkaline dykes. In conclusion, the |  | | Journal (article/letter/editorial) | | alkaline silicate igneous rocks, forming alkaline-carbonatite complexes, but some occur as isolated pipes,...indicator mineral surveys Carbonatites and alkaline-carbonatite complexes are the main sources of rare earth... Nine per cent of carbonatites and alkaline-carbonatite complexes contain active or historic mines, making...Introduction Mineralised carbonatites and alkaline-carbonatite complexes are highly sought after, multi-commodity...targets for mining companies worldwide. Alkaline-carbonatite complexes are significant sources of Cu, apatite |  | Chakhmouradian, Anton R., Reguir, Ekaterina P., Kressall, Ryan D., Crozier, Jeremy, Pisiak, Laura K., Sidhu, Ravinder, Yang, Panseok (2015) Carbonatite-hosted niobium deposit at Aley, northern British Columbia (Canada): Mineralogy, geochemistry and petrogenesis. Ore Geology Reviews, 64. 642-666 doi:10.1016/j.oregeorev.2014.04.020 | Journal (article/letter/editorial) | | homepage: www.elsevier.com/locate/oregeorev Carbonatite-hosted niobium deposit at Aley, northern British...Available online xxxx Keywords: Aley niobium deposit Carbonatite Metasomatic rocks Pyrochlore-group minerals Columbite-group...this article as: Chakhmouradian, A.R., et al., Carbonatite-hosted niobium deposit at Aley, northern British...key examples are listed in Table 1. The Aley carbonatite complex in northern British Columbia, Canada... and interpret these data in the context of carbonatite petrogenesis and regional geology. To our knowledge |  | | Journal (article/letter/editorial) | | Wisconsin through central Iowa and southeastern Nebraska into Kansas. It strikes southwest from Lake Superior...resumes its southwesterly course into southeastern Nebraska. At this point the anomaly shifts abruptly to...Kansas-Nebraska border into central Kansas. Data from subsurface samples in southeast Nebraska (Lidiak...5 Osler R 2.8 Nopeming R 3.0-6.3 Siemens Creek N 0.1 Volcanic plateaus Ironwood-Grand Portage-...northeast of Lake Superior and as nepheline-carbonatite complexes in the Kapuskasing structural zone |  | | Book (edition) | | Dedicated to Harry von Eckermann, an eponym for carbonatite, with admiration and affection Preface to the...this edition, summarizes the major advances in carbonatite studies in the decade 1966-1976. Since 1966 many...Certainly one of the important new facets of carbonatite study will be their saprolite geology. Recognition...Kimberlites Carbonatites and Vulcanism Geology of Carbonatite Bodies Mineralogy and Petrology Composition and...: Geological Society of South Africa and R. L. Johnson (1961) : The Mineralogical Magazine and D. S. Sutherland |  | | Report (issue) | | ... C1 Chapter D. Barite (Barium) By Craig A. Johnson, Nadine M. Piatak, and M. Michael Miller.........and simplified geologic map of the Hellroaring Creek prospect, which is located west of Kimberley, British...related to strongly differentiated granites, for carbonatite-related fluorspar deposits, and for veins from...showing the subsurface geology of the Saint-Honoré carbonatite complex in southern Quebec, Canada, and a schematic...Photograph of the Mountain Pass Mine in San Bernardino County, California, which was the only active producer |  | | Book (volume) | | APACHECOUNTY, ARIZONA M. F. Roden and D. Smith 2•E OKA CARBONATITE CO•PLEX: R•GNETI2• COF•OSITIONS AND 'iHE RELATED...recovered to observed in the stones date. Johnson, V. P. Menzer, and C. T. Hadler, who helped...McCallum, M. E., and C. State [,/ne k/mberl_ite County, Wyoming, ]976a. D. Mabarak, diatremes, Latimer...004. isochron ratio of 176 -+ 29 m.y. and Carbonatite (75210081) Walloway occurrence (intrusive ...c) Nackara Group 139o14'E/32ø57'S and Pine Creek Group 139o17'E/33o10'S sediments. NNE-SSW. 5 |  | | Book | | Greenland Lamproites 3.2.1. Group Name: Prairie Creek 3.2.2. Group Name: Leucite Hills 3.2.3. Group Name:...Kimberley 4.4.3. Murcia-Almeria 4.4.4. Prairie Creek 4.5. Conclusions and Preferred Model 103 104 107...Australia 6.1.4. Argyle, West Australia 6.1.5. Prairie Creek, Arkansas 6.1.6. Murcia-Almeria, Spain 6.1.7. Smoky..."madupa" meaning "sweetwater" and the name of the county in which the Leucite Hills are located). As a corollary...River basin in 1976177. Alluvial diamonds in Smoke Creek in the East Kimberleys were traced back in the same |  | | Report (Issue volume) | | Geology. Nebraska: Conservation and Survey Division of the University of Nebraska (Nebraska Geological...----- - 549 Oklahoma, by L . G. Southard, K. S. Johnson, and J. F. Roberts ----- - --- ---------------...___ ____ Missouri_ __ .______ Montana __________ Nebraska _______ __ _ Nevada ___ ____ __ . _ New Hampshire___...1 , 024 69 NA 29 3,496 612 w w w w w w NEBRASKA Clays .... _.. . __________ ........ __ . __...1,029 110 152 117 111 3 ,430 416 1 ,016 459 Nebraska: Metal __ _____ __ ___________ Nonmetal_ __________ |  | | Journal (article/letter/editorial) | | M. MOREL* Princeton University, Princeton, NJ, USA (*correspondence: morel@princeton.edu) Azotobacter...Paris 4 Lawrence Livermore National Laboratory, USA 1 2 The details of Earth’s accretion, and the nature...PROKUSHKIN Los Gatos Research, Mountain View, CA, USA Novel instrumentation based on high-resolution laser...University of Minnesota, Minneapolis, MN 55455, USA (*correspondance: baileyj@umn.edu) Wrinkle structures...California at Irvine, 3206 Croul Hall, Irvine, CA 92697, USA. 1 The Asian summer monsoons affect the livelihood |  | | Book | | OX5 1GB, UK 225 Wyman Street, Waltham, MA 02451, USA Copyright © 2015 Elsevier Inc. All rights reserved...Lapland, as well as the large apatite-rich Sokli carbonatite complex. Rautaruukki Oy terminated their exploration...had found in 1950 from the bank of Poickelbäck creek. The exploration was led first by Max Kulonpalo...sample taken by an amateur prospector from a small creek bank outcrop. The geochemical till anomalies and...factors contributed to the discovery of this carbonatite, which ranks among the world’s largest in area |
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