| | 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...contaminated by other non-carbonatite material. The Elk Creek carbonatite is of special interest because | | | 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 | | | Journal (article/letter/editorial) | production of Nb, with the primary St. HonorĂ© carbonatite and other sources accounting for only for 7 and...individual petrographically-deïŹned 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 ïŹne grained...and 1%, respectively. Mining at the CatalĂŁo-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 | | | 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 | | | Journal (article/letter/editorial) | niobium, metallogeny of tantalum, tantaloniobates, carbonatite, nepheline syenite, alkali granite, syenite,...(Fennoscandian) Shield, namely, SiilinjĂ€rvi carbonatite and Saharjok nephelineâsyenite (Zozulya et al...(26) Bolshetagninskoe; (27) Saint-HonorĂ©; (28) Elk Creek; (29) Afrikanda; (30) Aley; (31) Upper Fir; (32)...Mabouni Beloziminskoe Bolshetagninskoe Saint-HonorĂ© Elk Creek Afrikanda Aley Upper Fir Chuktukon Toongi Baerzhe...means alkali granite; as, alkali syenite; cb, carbonatite; h, hydrothermal ore; ns, nepheline syenite; | | | Journal (article/letter/editorial) | YavapaiâMazatzal (YM). The black crosses show carbonatite intrusions locations that are consistent with...et al., 1979), at 172 km under eastern Montana, USA (Baumgardt and Alexander, 1984), and at âŒ200 km beneath...consistent with the 540 Ma REE-rich Elk-Creek carbonatite intrusion in SE Nebraska with a mantle Sr87 /Sr86 ratio...is also consistent with the petrogenesis of carbonatite intrusions in the Black Hills, South Dakota,...minerals that have been re-melted to make the carbonatite intrusions within this area. The general absence | | | 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...pyrochlore are located at the Baltic Shield (the carbonatite SiilinjĂ€rvi and nepheline syenite Saharjok 751...Zima; 26, Bolshaya Tagna; 27, Saint-HonorĂ©; 28, Elk Creek; 29, Afrikanda; 30, Aley; 31, Upper Fir; 32, Chuktukon; | | Duke, Genet Ide, Carlson, Richard W., Frost, Carol D., Hearn, B.C., Eby, G. Nelson (2014) Continent-scale linearity of kimberliteâcarbonatite 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 kimberliteâcarbonatite magmatism, mid-continent North America Genet...online xxxx Editor: B. Marty Keywords: kimberlite carbonatite SrâNdâHfâPb isotope geochemistry mantle reservoirs...b s t r a c t CretaceousâTertiary kimberliteâcarbonatite 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 | | 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 | | | Report (issue) | showing the subsurface geology of the Saint-HonorĂ© carbonatite complex in southern Quebec, Canada, and a schematic...particularly carbonatites (for example, the AraxĂĄ 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...Typical grades and tonnage Major examples Carbonatite-hosted primary deposits Nb >Ta: Niobium deposits...perovskite and pyrochlore mineral groups found within carbonatite intrusions in alkaline igneous provinces Deposits | | | 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 signiïŹcant sources of Cu, apatite | | | Journal (article/letter/editorial) | the magma or by hydrothermal processes. One carbonatite-related REE ore deposit, the Mount Weld deposit...formed by lateritic weathering of the underlying carbonatite. © 2017 2017Published The Authors. Published...vast majority of worldâs REE production. A few carbonatite-related deposits provide the worldâs LREEs, and...due to lateritic weathering of an underlying carbonatite. The second deposit type, ion adsorption clay...role in ore-grade enrichment of REEs in both carbonatite and ion adsorption clay deposits. This paper | | | 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...5.0â5.5 6â6.5 6 Reference Pegmatites and carbonatite complexes 7.3 5.2â5.7 4.3â5.9 5.4 NA 5...(2004) Carbonatite complexes Pegmatites and peralkaline complexes Peralkaline and carbonatite complexes | | | Journal (article/letter/editorial) | Nb and REE Distribution in the Monte Verde CarbonatiteâAlkalineâAgpaitic Complex (Angola) Sandra Amores-Casals... Abstract: The Angolan alkalineâcarbonatite 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) | 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 | | 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 â 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 â Rough Creek Graben, southern Illinois and northwestern Kentucky...ultramafic lamprophyres in the Reelfoot Rift â Rough Creek Graben, southern Illinois and northwestern Kentucky...ultramafic lamprophyres in the Reelfoot Rift â Rough Creek Graben, southern Illinois and northwestern Kentucky...lapilli and is characterized as a lamprophyre-carbonatite tuffisite. Trace element patterns exhibit enrichment...Intrusive could be achieved by separation of carbonatite. A narrow range of initial Sr/86Sr (0.70301-0 | | | 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 | | Cangelosi, Delia, Smith, Martin, Banks, David, Yardley, Bruce (2020) The role of sulfate-rich fluids in heavy rare earth enrichment at the Dashigou carbonatite deposit, Huanglongpu, China. Mineralogical Magazine, 84 (1) 65-80 doi:10.1180/mgm.2019.78 | Journal (article/letter/editorial) | Heavy Rare Earth enrichment at the Dashigou carbonatite deposit, Huanglongpu, China Delia Cangelosi a...Qinling orogenic belt in central China. Calcite carbonatite dykes at the Dashigou open pit are unusual due...economic concentrations of molybdenite. The calcite carbonatite dykes show two styles of mineralogy according...concentration. The REE in the little-altered calcite carbonatite occur mostly in magmatic REE minerals, mainly...reaction of sulfate-rich fluids with the calcite carbonatite dykes. The final HREE enrichment is due to a | | | Journal (article/letter/editorial) | and deposition of magnetite and gold in Harris Creek, south-central British ColumbiaâZ. Hou and W.K....to the Steamboat Hills geothermal area, Washoe County, NevadaâJohn 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 zoneâJ.S. Johnson, S.A. Gibson, R.N. Thompson, and G.M. Nowell Crustal...2, 2005 Famous mineral localities: The Cripple Creek Mining District, ColoradoâCarl R. Carnein and Paul | | | Journal (article/letter/editorial) | Sciences, University of Nebraska-Lincoln, 1400 R St, Lincoln, NE 68588, USA; jerlyn.swiatlowski@gmail...Riverside, 900 University Ave, Riverside, CA 92521, USA Correspondence: cburberry2@unl.edu Received: 7 April...Mesozoic of Nebraska and Kansas. The most prominent basement features in southeast Nebraska and northeast...reactivation history of basement-involved faults in SE Nebraska and NE Kansas. The concept of tectonic inheritanceâwhich...study area chosen is the southeastern section of Nebraska and the adjacent northwestern region of Kansas | | | 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-HonorĂ© 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 2âąE OKA CARBONATITE COâąPLEX: RâąGNETI2âą COFâąOSITIONS 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/32Ăž57'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 |
|