 | | Journal (article/letter/editorial) | | Amsterdam - Printed in The Netherlands ELK CREEK, NEBRASKA, CARBONATITE: STRONTIUM GEOCHEMISTRY D.G. BROOKINS...N.M. (USA) S.B. TREVES Department o f Geology, The University o f Nebraska, Lincoln, Nebr. (USA) and...M. (USA) Received June 5, 1975 Revised version received August 8, 1975 Subsurface carbonatite at Elk...Elk Creek, Nebraska has been recognized in drill core taken from a depth interval of 630 to at least 950...The core in this interval consists of carbonated breccia and phlogopite-bearing carbonate rock. Total REE |  | | 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 |  | | Report (issue) | | ..........................................7 Carbonatite REE-Bearing Deposits...........................the Sulphide Queen deposit, is a large tabular carbonatite intrusion, thought to be the largest rare earth...mineral (table 2), is the main ore mineral in carbonatite REE deposits, including the three largest REE...Mountain Pass deposit, California. Because these carbonatite-hosted deposits are the largest global sources...PENNSYLVANIA UNITED STATES 5 UTAH RHODE ISLAND IOWA NEBRASKA NEVADA NEW YORK MICHIGAN 7 WYOMING PACIFIC |  | Maria, Anton H., Denny, F. Brett, DiPietro, Joseph A., Howard, Kevin F., King, Maxwell D. (2019) Geochemistry and Sr-Nd isotopic compositions of Permian ultramafic lamprophyres in the Reelfoot Rift – Rough Creek Graben, southern Illinois and northwestern Kentucky. Lithos, 340. 191-208 doi:10.1016/j.lithos.2019.05.007 | Journal (article/letter/editorial) | | ultramafic lamprophyres in the Reelfoot Rift – Rough Creek Graben, southern Illinois and northwestern Kentucky...ultramafic lamprophyres in the Reelfoot Rift – Rough Creek Graben, southern Illinois and northwestern Kentucky...ultramafic lamprophyres in the Reelfoot Rift – Rough Creek Graben, southern Illinois and northwestern Kentucky...7% K2O, and 0.4-1.3% P2O5. The Grant Intrusive Breccia is an exception, with lower SiO2, Al2O3, FeOt,...lapilli and is characterized as a lamprophyre-carbonatite tuffisite. Trace element patterns exhibit enrichment |  | | 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 scarcity |  | | 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 |  | 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) | | 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 |  | | Journal (article/letter/editorial) | | and deposition of magnetite and gold in Harris Creek, south-central British Columbia—Z. Hou and W.K....Dulski, and Donald B. Dingwell Extracts of impact breccia samples from Sudbury, Gardnos, and Ries impact...to the Steamboat Hills geothermal area, Washoe County, Nevada—John D. Skalbeck, Robert E. Karlin, Lisa...Onal Unroofing history of the Jambil and Jawar carbonatite complexes from NW Pakistan: Constraints from...mantle plume beneath the Baikal rift zone—J.S. Johnson, S.A. Gibson, R.N. Thompson, and G.M. Nowell Crustal |  | | 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 |  | | 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...dolerite dykes, dolerite sills and rare volcanic breccia plugs. The upper Karroo sediments are poorly ex$9...deeperparts of the Kimberleypipes in a tuffisite-breccia, is best classified as interpreted as resulting |  | | 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 | | 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 |  | | 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...of the Järvenpää farm, the team found several breccia boulders, which contained fragments of mafic metavolcanic...shore of the small Paronen Lake where tourmaline breccia was found in outcrop, but without chalcopyrite...had found in 1950 from the bank of Poickelbäck creek. The exploration was led first by Max Kulonpalo |  | | 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 |
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