 | Neave, David A., Black, Martin, Riley, Teal R., Gibson, Sally A., Ferrier, Graham, Wall, Frances, Broom-Fendley, Sam (2016) On the Feasibility of Imaging Carbonatite-Hosted Rare Earth Element Deposits Using Remote Sensing. Economic Geology, 111 (3) 641-665 doi:10.2113/econgeo.111.3.641 | Journal (article/letter/editorial) | | sensing. Samples were selected to cover a wide range of extents and styles of REE mineralization, and...s. REE ores from the Bayan Obo (China) and Mountain Pass (United States) mines, as well as REE-rich alkaline...such as the relatively extensive Bayan Obo and Mountain Pass deposits in China and the United States, respectively...atoms rather than on their bonding environments (Clark, 1995). While the identification of REEs in mineral...exceptions of monazite-(Ce), bastnĂ€site(Ce), parisite-(Ce,) and synchysite-(Ce), there are few published |  | | Journal (article/letter/editorial) | | 779 THE MOUNTAIN PASS RARE-EARTH CARBONATITE AND ASSOCIATED ULTRAPOTASSIC ROCKS, CALIFORNIA Stephen B...which contains the rare-earth orebody at Mountain Pass in California, is a moderately dipping tabular intrusion...abundant carbonatite and alkaline dikes. The Mountain Pass carbonatite and alkaline rocks lie in a narrow...mineralogically unusual. The mafic members of the Mountain Pass alkaline rock suite belong to the ultrapotassic...rocks, enriched mantle, Sulphide Queen, Mountain Pass, California. Sommaire La carbonatite de Sulphide |  | | Report (issue) | | Field Guide to Mountain Pass, California and the Searchlight District, Nevada by G. Nason, G. B. Haxel...will visit the Molycorp Mountain Pass Mine and surrounding region of California followed by a tour of the...the Searchlight District of Nevada. We wish to acknowledge the management of Molycorp for permission...to visit the mine and processing facilities and to thank Geoff Nason for leading the mine tour. We also...fascinating geology in the area surrounding the Mountain Pass Mine, and for coordinating important aspects of |  | Doroshkevich, A. G., Ripp, G. S., Viladkar, S. G., Vladykin, N. V. (2008) THE ARSHAN REE CARBONATITES, SOUTHWESTERN TRANSBAIKALIA, RUSSIA: MINERALOGY, PARAGENESIS AND EVOLUTION. The Canadian Mineralogist, 46 (4) 807-823 doi:10.3749/canmin.46.4.807 | Journal (article/letter/editorial) | | were later altered by hydrothermal solutions. BastnĂ€site formed as a magmatic mineral in the carbonatites...recrystallization of calcite, the replacement of bastnĂ€site and phlogopite, and the formation of secondary...VâSMOW values for the Arshan bastnĂ€site is only partially within the usual range of mantle values. The altered...shallow depth. Keywords: rare-earth mineralization, bastnĂ€site, hydrothermal activity, isotopic data, Arshan...altĂ©rĂ©es par des solutions hydrothermales. La bastnĂ€site sâest formĂ©e Ă partir du magma carbonatitique |  | | Journal (article/letter/editorial) | | mineralizationâpolycrystalline clusters hosting bastnĂ€site-(Ce), which crystallized radially from carbonate...within strongly brecciated units. However, bastnĂ€site-(Ce) inclusions in primary magmatic barite crystals...REE-bearing minerals, such as minerals of the bastnĂ€site group [(REE)(CO3 )F] or the parisite group [(REE)2...fluid in concentrating REE through fine-grained bastnĂ€site-(Ce) mineralization. In 2011â2012, this REE zone...for [41]. La, Ce, increase and metal concentrations increase are fit forones the purpose Ce, the andpurpose |  | Smith, M.P., Moore, K., KavecsĂĄnszki, D., Finch, A.A., Kynicky, J., Wall, F. (2016) From mantle to critical zone: A review of large and giant sized deposits of the rare earth elements. Geoscience Frontiers, 7 (3) 315-334 doi:10.1016/j.gsf.2015.12.006 | Journal (article/letter/editorial) | | giant (>1.7Ă107 tonnes contained SC metal), but a range of others classify as large (>1.7Ă106 tonnes). With...fundamental to a range of low carbon energy production approaches, and in a wide range of high technology...of large deposits (e.g. Bayan Obo, China; Mountain Pass, USA; Mount Weld, Australia; Lovozero, Russia)...sized TE D deposit of the REE. They consist of bastnĂ€site and monazite developed alongside significant...of the Black Hills Intrusive Belt, South Dakota, USA. It consists of a subvolcanic intrusive complex of |  | Doroshkevich, A. G., Viladkar, S. G., Ripp, G. S., Burtseva, M. V. (2009) HYDROTHERMAL REE MINERALIZATION IN THE AMBA DONGAR CARBONATITE COMPLEX, GUJARAT, INDIA. The Canadian Mineralogist, 47 (5) 1105-1116 doi:10.3749/canmin.47.5.1105 | Journal (article/letter/editorial) | | association of quartz, florencite-(Ce), strontianite, barite and sparse bastnĂ€site â parisite â synchysite typical...recrystallization, carbonatites, REE fluorcarbonates, florencite-(Ce), Amba Dongar, India. Sommaire Nous avons Ă©tudiĂ©...Lâassociation de quartz, florencite-(Ce), strontianite, barite et bastnĂ€site â parisite â synchysite (fluorcarbonates...devenue enrichie en Fâ, (SO4)2â, terres rares et Si, ce qui a produit un assemblage de barite, fluorite,...carbonatites, fluorcarbonates de terres rares, florencite(Ce), Amba Dongar, Inde. § E-mail address: ripp@gin |  | | Journal (article/letter/editorial) | | Eur. J. Mineral. 2003, 15, 725-731 Percleveite-(Ce) â a new lanthanide disilicate mineral from BastnĂ€s...SE-106 91 Stockholm, Sweden Abstract: Percleveite-(Ce), (Ce, La, Nd)2Si2O7, is a new mineral species from...occurs closely associated with mainly cerite-(Ce), bastnĂ€site-(Ce) and quartz. The colour is greyish and the...for the crystallization of cerite-(Ce). Key-words: percleveite-(Ce), new mineral, REE, disilicate, crystal...Introduction The BastnĂ€s deposit in the Skinnskatteberg district of VĂ€stmanland, Sweden (lat. 59°51âN, long. 15°35âE) |  | Rowland, Richard L., Lavina, Barbara, Vander Kaaden, Kathleen E., Danielson, Lisa R., Burnley, Pamela C. (2020) Thermal Analysis, Compressibility, and Decomposition of Synthetic BastnĂ€site-(La) to Lanthanum Oxyfluoride. Minerals, 10 (3) 212 doi:10.3390/min10030212 | Journal (article/letter/editorial) | | Compressibility, and Decomposition of Synthetic BastnĂ€site-(La) to Lanthanum Oxyfluoride Richard L. Rowland...Alamos National Laboratory, Los Alamos, NM 87544, USA High Pressure Science and Engineering Center, University...University of Nevada Las Vegas, Las Vegas, NV 89154, USA; Blavina@anl.gov Astromaterials Research and Exploration...Space Center, Mail Code XI3, Houston, TX 77058, USA; Kathleen.E.VanderKaaden@NASA.Gov Space and Remote...Alamos National Laboratory, Los Alamos, NM 87544, USA; LDanielson@LANL.Gov High Pressure Science and Engineering |  | Tucker, R. D., Belkin, H. E., Schulz, K. J., Peters, S. G., Horton, F., Buttleman, K., Scott, E. R. (2012) A MAJOR LIGHT RARE-EARTH ELEMENT (LREE) RESOURCE IN THE KHANNESHIN CARBONATITE COMPLEX, SOUTHERN AFGHANISTAN. Economic Geology, 107 (2) 197-208 doi:10.2113/econgeo.107.2.197 | Journal (article/letter/editorial) | | of Earth Science, University of California, Santa Barbara, California 93106-9630 Force for Business Stability...concordant seams of khanneshite-(Ce), synchysite-(Ce), and parisite-(Ce) within banded barite-strontianite... containing idiomorphic crystals of khanneshite-(Ce) or carbocernaite. Type 1 mineralized barite-strontianite...4.27 wt % SrO, and 3.25 wt % âLREE2O3 (sum of La, Ce, Pr, and Nd oxides). Type 2 igneous dikes average...of khanneshite-(Ce), barite, strontianite, and secondary synchysite(Ce) and parisite-(Ce). The dark central |  | | Journal (article/letter/editorial) | | com/locate/chemgeo The thermodynamic properties of bastnĂ€site-(Ce) and parisite-(Ce) Alexander P. Gysi â,1, Anthony E...Editor: Michael E. Böttcher Keywords: BastnĂ€site-(Ce) Parisite-(Ce) Fluorocarbonates Heat capacity DSC...properties of natural bastnĂ€site-(Ce) (Ce0.50La0.25Nd0.20Pr0.05CO3F) and parisite-(Ce) (CaCe0.95La0.60Nd0...The measured isobaric heat capacity (Cp°) for bastnĂ€site-(Ce) can be described by the relationship 134.3...T-2 between 343.15 and 528.15 K and for parisite-(Ce) by the relationship 398.8 â 1048 Tâ0.5 â 4.202 Ă |  | | Journal (article/letter/editorial) | | Vol. 38, pp. 67-79 (2000) CERITE-(Ce) AND THORIAN SYNCHYSITE-(Ce) FROM THE NIEDERBOBRITZSCH GRANITE...minerals, including cerite-(Ce), thorian synchysite-(Ce), synchysite-(Ce), and an unidentified Th-rich...Th-rich REE fluorocarbonate(?). Cerite-(Ce) is a REE silicate that, to date, has been found in only half a...described from a granite. The composition of cerite-(Ce) from Niederbobritzsch is characterized by lower...other occurrences. Dissolution of thorian monazite(Ce) during interaction with a F-, CO2- and Ca-bearing |  | | Report (issue) | | RWANDA SAINT LUCIA SAINT VINCENT AND THE GRENADINES SAN MARINO SAUDI ARABIA SENEGAL SERBIA SEYCHELLES SIERRA...and environment, as well as waste management and mine closure. Other topics covered include storage of........................................ 35 5.3.4. Mine closure ............................................................... 51 7.5.1. Steenkampskraal mine ..................................................classification of South African deposits ................. 53 USA ................................................ |  | Trofanenko, J., Williams-Jones, A. E., Simandl, G. J., Migdisov, A. A. (2016) The Nature and Origin of the REE Mineralization in the Wicheeda Carbonatite, British Columbia, Canada. Economic Geology, 111 (1) 199-223 doi:10.2113/econgeo.111.1.199 | Journal (article/letter/editorial) | | comprise REE fluorocarbonates, ancylite-(Ce), and monazite-(Ce). In addition to dolomite 3, they occur...concentrations of these metals. Examples include Mountain Pass (Castor, 2008), Maoniuping (Xu et al., 2003...(Moore et al., 2015). In rare cases, such as the Mountain Pass deposit, textural relationships indicate that...BaO SrO S C LOI Fââââ(ppm) Nb Rb Ta U Zr Ga Th Y La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Total Calcite...subsequent periods of extension. The NW-trending Rocky Mountain Trench, which follows the Parsnip River valley |  | Allaz, Julien, Raschke, Markus B., Persson, Philip M., Stern, Charles R. (2015) Age, petrochemistry, and origin of a REE-rich mineralization in the Longs Peak-St. Vrain batholith, near Jamestown, Colorado (U.S.A.) American Mineralogist, 100 (10) 2123-2140 doi:10.2138/am-2015-5253 | Journal (article/letter/editorial) | | by fluorbritholite-(Ce) in a gray-colored core up to 10 cm thick, with monazite-(Ce), fluorite, and minor...allanite-(Ce) rim, with minor monazite-(Ce) in the inner part of that rim. BastnĂ€site-(Ce), törnebohmite-(Ce)...törnebohmite-(Ce), and cerite-(Ce) appear in a thin intermediate zone between core and rim, often just a few...twofold from 21.3 to 44.3%). The fluorbritholite-(Ce) contains minor U, Th, Fe, Mn, and Sr (total 0.10...Cerite-(Ce) is a minor constituent of the thin zone between the inner rim and the core. The cerite-(Ce) is |  | Su, Jian-Hui, Zhao, Xin-Fu, Li, Xiao-Chun, Hu, Wei, Chen, Mi, Xiong, Yi-Lin (2019) Geological and geochemical characteristics of the Miaoya syenite-carbonatite complex, Central China: Implications for the origin of REE-Nb-enriched carbonatite. Ore Geology Reviews, 113. 103101 doi:10.1016/j.oregeorev.2019.103101 | Journal (article/letter/editorial) | | together with allanite, monazite, bastnĂ€site(-Ce), and parisite-(Ce). Ferrocarbonatites which are the... calcite, apatite, and fluorite, bastnĂ€site-(Ce), and parisite-(Ce). The carbonatites have lower Nb,...studies in Mountain Pass have confirmed that primary REE-bearing mineral phases such as bastnĂ€site can crystallize...minerals include allanite, monazite, bastnĂ€site-(Ce), and parisite-(Ce) (Li, 1980; Ma, 1981; Xu et al., 2010)...minerals, including allanite, monazite, bastnĂ€site-(Ce), and parisite-(Ce), make up 1-5% vol. of the rocks. |  | | Journal (article/letter/editorial) | | arfvedsonite, calcite, quartz, barite, fluorite, and bastnĂ€site-(Ce). Based on geological observations and the...by a carbonatiteâsyenite complex with minor bastnĂ€site-(Ce), whereas the pegmatitic stage consists of...to high temperatures (260â350 °C), with a wide range of salinity (9.4â47.8 wt.% NaCl equiv.), a fluid...CH4 + C2H6. During the REE stage, pervasive bastnĂ€site-(Ce) containing abundant LâV type and few LâC type...Keywords: Carbonatite; Maoniuping REE deposit; BastnĂ€site-(Ce); Fluid inclusion; Fluid immiscibility 1. |  | | Journal (article/letter/editorial) | | of both LREE and Y + HREE (subtype 2, Norberg District). New data have been collected on twenty REE species...Mössbauer spectroscopy. Cerite-(Ce) is, together with ferriallanite-(Ce), the most important REE mineral...occurrences worldwide, the present samples of cerite-(Ce) are poor in Ca and enriched in Mg and F. Calcium...apfu, and is mainly in the trivalent state. Cerite-(Ce) is a major carrier of Y (up to 3.5 wt.% Y2O3). Fluorbritholite...in REE and Y occur, ranging from fluorbritholite-(Ce) to the unaccredited member âfluorbritholite-(Y)â |  | | Journal (article/letter/editorial) | | Ambar Donga in India, Ray et al. 2000; Mountain Pass in the USA, Castor 2008; Oka in Canada, Samson et...2015), which is coincided with ThâPb dating for bastnĂ€site-(Ce) ages at ~26 Ma (Ling et al. 2016) and 40Arâ39Ar...euhedral-subhedral, plate-like bastnĂ€site-(Ce) and a small amount of parisite-(Ce) whereas the gangue minerals...arfvedsonite, calcite, quartz, ïŹuorite, barite and bastnĂ€site-(Ce) from rim to center (Fig. 3e). The recognizable...mineralization stage occurs with the presence of bastnĂ€site-(Ce) and some ïŹuorite and barite at the center |  | | Journal (article/letter/editorial) | | came from the carbonatite-hosted Mountain Pass deposit in California, USA, 5â10% from Chinese carbonatites... MONGOLIA Apatite mine, active Apatite mine, under construction Mosandrite mine (1933-1939), abandoned...abandoned CHINA faults Loparite mine, active Loparite mine (1984-2004), abandoned dolomite-ankerite carbonatites...calcite carbonatite, (B) complex carbocernaiteâ bastnĂ€siteâcalciteâmonazite pseudomorphs after primary burbankite...the published analyses fall in the 250â8000 ppm range (cf â€1600 ppm in alkaline volcanics rocks; FIG. |  | Xu, Cheng, Campbell, Ian H., Kynicky, Jindrich, Allen, Charlotte M., Chen, Yanjing, Huang, Zhilong, Qi, Liang (2008) Comparison of the Daluxiang and Maoniuping carbonatitic REE deposits with Bayan Obo REE deposit, China. Lithos, 106 (1) 12-24 doi:10.1016/j.lithos.2008.06.005 | Journal (article/letter/editorial) | | adjacent carbonatite dykes, which have the same age range as ore formation. A similar REE mineralization model...economic deposits have been found, including Mountain Pass, USA (e.g. Mariano, 1989), Tundulu and Kangankunde...backscattered electron image). Cc, calcite; Bas, bastnĂ€site-(Ce); Do, dolomite; R, C, rim and core of spots...94.79 99.91 99.13 Bt, bastnĂ€site-(Ce); Pt, parisite-(Ce); Mt, monazite-(Ce); bdl, below detection limit;...Principal REE minerals are ïŹuorocarbonates and monazite [(Ce,La,Nd,Th)PO4]. Fluorocarbonates occur in aggregates |  | Nedosekova, Irina, Vladykin, Nikolay, Udoratina, Oksana, Belyatsky, Boris (2021) Ore and Geochemical Specialization and Substance Sources of the Ural and Timan Carbonatite Complexes (Russia): Insights from Trace Element, RbâSr, and SmâNd Isotope Data. Minerals, 11 (7) 711 doi:10.3390/min11070711 | Journal (article/letter/editorial) | | NbâREE-deposits with the Buldym complex and REE-deposits of bastnĂ€site carbonatites with the Chetlassky complex. A comparative...SrâNd isotopes; NbâREE deposits; pyrochlore; bastnĂ€site; Urals; Timan Received: 28 May 2021 Accepted:...REE-deposits are associated with carbonatites: Mountain Pass (USA) and Bayun-Obo (China) provide more than...associated with these carbonatites such as Mountain Pass (USA); Karasug (Central Tuva, Russia); and Dashigou...with the Buldym complex; and REE-deposits of bastnĂ€site carbonatites with the Minerals 2021, 11, 711 |  | | Journal (article/letter/editorial) | | resources are hosted by carbonatite deposits, and bastnĂ€site, monazite, and xenotime are the three most significant...generally <3 kt REO/year. 80 60 China 40 20 USA 0 1950 1960 1970 1980 1990 2000 2010 Fig. 1. Historical...projects (e.g., Buckton, Browns Range, etc.) defining the LREE as including La, Ce, Pr, and Nd, whereas the...31 Optics, batteries, catalysis, hydrogen storage Ce 58 Cerium Light 63 Chemical applications, coloring...according to the IUPAC classification into the LREE (La, Ce, Pr, Nd, Sm, Eu, and Gd) and the HREE (Tb, Dy, Ho |  | Xu, Cheng, Kynicky, Jindrich, Chakhmouradian, Anton R., Campbell, Ian H., Allen, Charlotte M. (2010) Trace-element modeling of the magmatic evolution of rare-earth-rich carbonatite from the Miaoya deposit, Central China. Lithos, 118 (1) 145-155 doi:10.1016/j.lithos.2010.04.003 | Journal (article/letter/editorial) | | the discovery of the world-class Mountain Pass deposit in California (Castor, 2008). In most carbonatites...Mnz, monazite-(Ce); Ap, ïŹuorapatite; Rt, rutile; Bt, bastnĂ€site-(Ce); Sy, synchysite-(Ce). Note alteration...crystallization of bastnĂ€site-(Ce) after primary calcite (F), and syntaxial intergrowths of bastnĂ€site-(Ce) and synchysite-(Ce)...synchysite-(Ce) (G, H). 148 C. Xu et al. / Lithos 118 (2010) 145â155 C. Xu et al. / Lithos 118 (2010)...ferrocolumbite, Nb-rich rutile, monazite-(Ce), bastnĂ€site-(Ce) and synchysite-(Ce). A few carbonatite samples contain |  | Ruberti, E., Enrich, G. E.R., Gomes, C. B., Comin-Chiaramonti, P. (2008) HYDROTHERMAL REE FLUOROCARBONATE MINERALIZATION AT BARRA DO ITAPIRAPUA, A MULTIPLE STOCKWORK CARBONATITE, SOUTHERN BRAZIL. The Canadian Mineralogist, 46 (4) 901-914 doi:10.3749/canmin.46.4.901 | Journal (article/letter/editorial) | | were deposited. Syntaxy between synchysite-(Ce) and parisite-(Ce) is very common owing to the similarity...(001) layers of (CeF), (CO3) and (Ca). However, bastnĂ€site-(Ce) occurs as individual crystals, overgrown by...REE fluorocarbonate, synchysite-(Ce), parisite-(Ce), bastnĂ€site-(Ce), hydrothermal conditions, carbonatite...de lâArche de Ponta Grossa, dâĂąge cretacĂ© prĂ©coce. Ce complexe est fait dâun stockwerk de filons et de...Une relation de syntaxie entre synchysite-(Ce) et parisite-(Ce) est trĂšs commune Ă cause de la ressemblance |
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Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts, San Bernardino County, California, USA