 | | Journal (article/letter/editorial) | | Exploration in North America The Mountain Pass deposit, California Anthony N. Mariano1 and Anthony Mariano...in mineralogy and geology. The Mountain Pass carbonatite in California historically has been a major world...for HREEs but have rock past producer, Mountain Pass in California, is average total REE (Ī£REE) grades running...to be attractive targets by Mountain Pass mine in California. Mountain Pass was for companies and investors...~1 wt% 1 48 Page Brook Road, Carlisle, MA 01741, USA E-mail: reomariano@aol.com to as high as 27 wt%. |  | | Report (volume) | | - - - - - - - - Not well-defined. May be near ancylite or carbocernaite Ampangabeite- - - - - - - - -...- - - - - - - - - - - - - - - - - = samarskite Ancylite- - - - - - (Ce, La) (Sr, Ca) (C0 3 ) 2 (OH) Ā·...- - - - - - - - - - - Mixture bastnaesite and ancylite Y P0 4 ā¢ 2H 20 - - - - - - - - - May be euxenite...VIMSa. Moscow, U.S.S.R. California Div. Mines and Geology BulL-State of California Department of Natural...Bulletin. San Francisco, Calif. California Div. Mines and Geology Mineral lnf. Ser.-State of California. Department |  | 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...available to the remote sensing community (Fig. 1; Clark et al., 2007; Turner et al., 2014). The most complete |  | | Report (issue) | | gov/images/periodictable.pdf. Cover. The Mountain Pass Mine, San Bernardino County, California, was the only active producer...............................................O21 Mine Waste Characteristics.........................................................................O22 Mine Closure...........................................Figures O1. O2. O3. O4. O5. Graph showing world mine production of rare-earth oxides, by country and....O6 Photograph of the Mountain Pass Mine in San Bernardino County, California, which was the only active |  | | 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 |  | | Journal (article/letter/editorial) | | carbonatite, Wyoming, USA Adrian D. Van Rythoven a,ā, Katharina Pfaļ¬ b, James G. Clark c a Department of...Pennsylvania, 400 E. 2nd St., Bloomsburg, PA, 17815, USA Department of Geology and Geological Engineering...Golden, CO, 80401, USA c Applied Petrographics, 4909 NE 320th Avenue, Camas, WA, 98607, USA b a r t i c l...rhabdophane, churchite), 3. cerianite, and 4. ancylite. These minerals vary greatly in abundance, grain...mineralogically complex. With rare exception, e.g., Mountain Pass [33], multiple ore minerals contribute to the |  | | Journal (article/letter/editorial) | | Southern Queensland] at 01:02 11 October 2014 Muzo District, Colombia Parisite-(Ce) crystals to 2.2 cm across...the emerald mines of Colombia or from the Snowbird mine, Montana. A quick look at the mineralās chemical...structure of a ācleanā crystal from the Muzo (Muso) mine, Colombia. They found it to be pseudohexagonal,...Fairfield County, Connecticut; and in greisen with purple fluorite at Irish Creek, Rockbridge County, Virginia...major magnetite deposit at Pea Ridge, Washington County, Missouri, and has been reported as a rare accessory |  | | Report (issue) | | placers of Idaho, veins and pipes in the Bokan Mountain district of Alaska, carbonatite dikes, and apatite-bearing...apatite-bearing iron deposits in the Mineville district of New York in the United States. 1980 CIRCULAR 824............ . Veins and Pipes in the Bokan Mountain District, Alaska ........................................ . Powderhorn District, Colorado ................. . Mountain Pass, California ....................Montana ................. . Ravalli County, Montan81- Lemhi County, Idaho .. Magnet Cove and Potash Sulfur |  | | Journal (article/letter/editorial) | | and Geology, University of Nevada, Reno, Nevada, USA Abstract Rare earth elements (REE) have been mined...when placer monazite was produced in the southeast USA. Since the 1960s, however, most North American REE...have come from a carbonatite deposit at Mountain Pass, California, and most of the worldās REE came from...this source between 1965 and 1995. After 1998, Mountain Pass REE sales declined substantially due to competition...constraints. REE are presently not mined at Mountain Pass, and shipments were made from stockpiles in |  | | Journal (article/letter/editorial) | | Carbonatites associated with alkalic rocks of the McClure Mountain and Gem Park Complexes, andthecomplex at DemocratCreek...carbonatites.Thorite, bastnaesite, synchisite,ancylite, and monaziteare chiefly responsiblefor the high...carbonatite three distinct complexes,the McClure Mountain dikeswere mappedwithin the Iron Mountainmafic-...and the complex ultramaficportion of the McClure Mountain Com- at Democrat Creek. The mafic-ultramaficparts...Shaweand Parker (1967), thoughthey did the McClure Mountain and Gem Park Complexes 888 C.4RBON.4TITES, |  | | Journal (article/letter/editorial) | | onlyduringthelast35 years(Deans,1966;Kapustin, Mountain Pass district, California; Oka, Quebec, 1980) andmanyother...remainto be dis- Canada;Iron Hill, Powderhorn district, Colorado;and covered. GemPark,Colorado(Fig. 1)...carbonatitesamplelocalities.MP -- MountainPassdistrict,California; al., 1973). The first overtoneof the OH-stretching...near 1.4 ā¢m. Similarly, the HOH-bending vibration district,Colorado;O -- Oka Carbonatite,Quebec,Canada. mode...Analytical Procedures IH = Iron Hill, Powderhorn district, Colorado; GP = Gem Park 1984). Manyrock-forming |  | | Book | | 353-416 257-320 321-384 225-288 137-224 CALIFORNIA ] 273-336 ARIZONA-IV ] 1-102 [ 17 / 1986...On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...ALABAMA Iron phosphate mineral locality at Indian Mountain, Alabama (by H. Harwood) 5:241-244 Iron-manganese |  | | Journal (article/letter/editorial) | | containing some Sr and in having a much wider total range of Sr content. Carbonatitic barites are late magmatic... Barite r,vhite Christman et aI., 19.53. Mountain Pass, Calif. to green in coarsecleavage masses....severaltypes of carbonatite dikes occur together in a district, the baritic type is the youngest. 2. In mineralogically...amounts: (rare species):celestite,strontianite, ancylite, goyazite,svanbergite. 5. Minerals containing...reported only from the following localities: Mountain Pass, California (barian) N a n o - V a r a ,U . S . S |  | | Journal (article/letter/editorial) | | carbonatites (e.g. Ca-rare-earth fluocarbonates and ancylite-(Ce)) plus burbankite and carbocemaite and some...products include hexagonal prismatic pseudomorphs of ancylite-(Ce) or synchysite-(Ce), strontianite and baryte...and may be of economic importance, e.g. at Mountain Pass (Olsen et al., 1954), Vuoriyarvi (Kukharenko...and parisite(Ce); and the hydrated carbonate, ancylite-(Ce). Other rare earth minerals such as burbankite...\ FeO FIG. 1. Plots showing the compositional range of the Khibina carbonatites which (a) classify as |  | | Journal (article/letter/editorial) | | characteristic of many alkaline complexes, e.g., Mountain Pass (USA) (Olsen et al., 1954), Fen (Norway) (Andersen...(Andrade et al., 1999). With the exception of Mountain Pass, Kangankunde and Khibina carbonatites, they...calcioburbankite and carbocernaite and hydrous carbonate ancylite ā(Ce). The phosphate, monazite ā (Ce), is a major...and indeed likely for some occurrences, e.g., Mountain Pass, which is the largest REE carbonatite known...assemblage of various rare earth minerals, including ancylite ā (Ce), synchysite ā(Ce), monaziteā (Ce) and other |  | | Journal (article/letter/editorial) | | South Africa (Ericksson 1989), there is a modal range from 100 vol.% magnetite through apatite calcite...genetically related rock-types that include a wide range of carbonatites. For mapping 2052 THE CANADIAN...uncompahgrite at Iron Hill (USA), potassic syenite in the Bearpaw Mountains (USA), and peralkaline sodic...and dunites are typically absent. Carbonatites range from calcite, through dolomite to siderite or ankerite-bearing... Romanikha (MaimechaāKotui, Russia), Iron Hill (USA), Oka (Canada), Gardiner (Greenland). Also included |  | | Journal (article/letter/editorial) | | dolomite-ankerite series. The latter cover a compositional range from nil to ~23 wt.% FeO or 70 mol.% CaFe(CO3)2...dolomite-ankerite-kutnohorite series from carbonatites, Bearpaw Mts., Montana; (11) most Mn-rich member of dolomite-...and rim core and rim of a calcite crystal, Bearpaw Mts., Montana (Fig. 9g); (35,36) core and rim of a late-stage...Afrikanda (Fig. 12f); (37) primary calcite, Mountain Pass, California (Fig. 7c); (38,39) low-AZ and high-AZ...in late-stage hydrothermal calcite crystal, Mountain Pass (Fig. 12d); (40) hydrothermal spherulitic calcite |  | | Journal (article/letter/editorial) | | calcite (15ā95 vol.%), subordinate hydroxylapatite, ancylite-(Ce), calcioancylite-(Ce), and minor burbankite...compositions. Crystallization of ancylite-(Ce) and calcio-ancylite-(Ce) is related to low-temperature...composition of the Afrikanda rocks (ā¦18O in the range 9.3 to 12.1ā° SMOW). Subtle variations in the isotopic...isotopic composition of carbon (ā¦13C in the range ā2.5 to ā1.7ā° PDB) suggest interaction with a meteoric-hydrothermal...of contamination. Keywords: calcite, ancylite-(Ce), calcio-ancylite-(Ce), burbankite, khanneshite, nyerereite |  | | Journal (article/letter/editorial) | | Acfa Vol. 56, pp. 725-738 Press plc. Printed in USA 0016-7037/92/$5.00 + .oO A preliminary petrogenetic...carbonatite at Mountain Pass, California, and in the Bayan Obo iron formation, China. The Mountain Pass deposit...LnP04}, allanite {( Ca,Ln)z(A1,Fe,Mg)$Si3012( OH)}, ancylite { LnSr(COsh( OH) - Hz0 } , burbankite {(Ln,Na...Engineering, University of Idaho, Moscow, ID 83843, USA. 725 126 A. E. Williams-Jones and S. A. Wood ...accommodated by the fluorocarbonate structure ( CLARK, 1984). SEMENOV( 1957,1958) has shown that minerals |  | | Book (edition) | | now the major sources of RE elements (Mountain Pass, California) and of Nb (Oka, Quebec and Araxa, Brazil)...localities as inclusions in the limestoneāā (italics mine). Actually, the first published description of...field work on the Iron Hill complex of Gunnison County, Colorado, in 1912-1913. Although his final results...carbonatite dikes cutting the kimberlite of the Premier mine (p. 542) he classed as magmatic, but 1 Bowen admitted... Colorado (Olson and Wallace, 1956), Mountain Pass, California (Olson et al., 1954), southwestern Montana |  | Smith, M.P., Moore, K., KavecsĆ”nszki, 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 (>1.7Ć107 tonnes contained SC metal), but a range of others classify as large (>1.7Ć106 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)...of the Black Hills Intrusive Belt, South Dakota, USA. It consists of a subvolcanic intrusive complex of...alteration to produce secondary AC C fluorcarbonates, ancylite-(Ce) and monazite-(Ce). REE mineralisation in |  | | Book (edition) | | Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...Hey 4.C Oxides with M: 0 =2:3, 3:5, etc. 0955). Clark (1993). and Blackbum and Dennen 4.D Oxides with...abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture), dept...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....always included in text, except in the cases of the USA, UK, and the provinces Ontario and Quebec in Canada |  | | Journal (issue) | | Cooper Nottingham, England Anthony R. Kampf L.A. County Mus. of Nat. Hist. Los Angeles, CA Steven R. Morehead... . . . . . . . . .89 by W. E. Wilson The Palomo mine, Huancavelica Department, Peru . . . . . . . . ...White Ca-Mg-Fe-rich rhodonite from the Morro da Mina mine, Conselheiro Lafaiete, Minas Gerais, Brazil . ....BaCa2(CO3)2F2, a new mineral species from the Kirovskii mine, Khibiny, Kola Peninsula, Russia . . . . . . . ...crystal cluster, 3.5 cm, from the Mashamba West mine, atanga, Republic of the Congo. Rob Lavinsky (The |  | 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) | | The REE minerals comprise REE fluorocarbonates, ancylite-(Ce), and monazite-(Ce). In addition to dolomite...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...subsequent periods of extension. The NW-trending Rocky Mountain Trench, which follows the Parsnip River valley...the Mineral Abbreviation Formula Carbonates Ancylite-(Ce) Ankerite BƤstnasite-(Ce) Burbankite-(Ce) |  | | Book | | . . . . . . . . . . . . . . . . . . Basin and Range Province . . . . . . . . . . . . . . . . . . . ...Ba, and possibly Ca, are described by Christ and Clark ( 1955) as based on a pseudohexagonal arrange1nent...short- and long-wave ultraviolet. The short-wave range is 2,300 to 3,100 A, with concentrations fron1 com1nercial...com1nercial equipment at 2,537 or 2,652 A. The long-wave range is front 3,100 to 4,000 A, with 3,650 A predo1ninating...in the intermediate range; and carbonates generally fall in the lowest index range. Within such groups |
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