 | | Journal (article/letter/editorial) | | due in part to historic influx of ‘conflict’ columbite-tantalite concentrate, or “Coltan,” that caused...% from tin slag refining and 10 % from secondary mine concentrates. Due to rapid industrialisation and...Canada account for about 92 and 7 % of Nb world mine production, respectively. Since the bulk of the...significant deposits of Ta and Nb contain pyrochlore, columbite-tantalite, fersmite, loparite and strüverite....Rare-elements . Strategic metals . Pyrochlore . Columbite . Tantalite Introduction Tantalum (Ta) and niobium |  | | Report (volume) | | Minerals of Colorado: A 100- Year Record By EDWIN B. ECKEL GEOLOGICAL SURVEY BULLETIN 1 1 14 A...knowledge____________________________________ Future of Colorado mineralogy______________________________________...mineral localities and metallic mineral deposits of Colorado ________________________________ In pocket III...mineral localities and metallic mineral deposits of Colorado, has not been included in this reprint. Many of...especially Fischer and others, 1946). MINERALS OF COLORADO: A 100-YEAR RECORD By EDWIN B. EcKEL ABSTRACT |  | | Report (issue) | | beauty are found in Cowee Valley in the Franklin County area of western North Carolina. Many of these...GEM STONES IN NORTH CAROLINA 12 History of Gem Mining 12 Important Gem Stones 12 Diamond 12 Corundum...COUNTIES Alamance County • .' 22 24 24 Alexander County 24 Alleghany County 25 Ashe County • 25 Avery...Avery County 25 Buncombe County 26 Burke County 26 Cabarrus County 27 Caldwell County 27 Caswell...Caswell County 27 Catawba County 28 Chatham County 28 Cherokee County 28 Clay County • • 29 Cleveland |  | | Journal (article/letter/editorial) | | vermiculite, Cu, Ti, fluorite, Th, U, natural zirconia, and Fe. Nine per cent of carbonatites and alkaline-carbonatite...and have become popular exploration targets for mining companies worldwide. Alkaline-carbonatite complexes...carbonatite-related REE deposits, such as at Bayan Obo Fe-REE-Nb deposit, Inner Mongolia (Smith et al. 2015;...15 wt.% Ca, and less than 1 wt.% combined Mg and Fe (Keller and Krafft 1990; Keller and Zaitsev 2012)...consensus regarding the origin of magnesium- and Fe-rich carbonatites. They are believed to either evolve | | | Report (issue) | | beauty are found in Cowee Valley in the Franklin County area of western North Carolina. Many of these.......................... 10 12 History of Gem Mining ..... .......................... . 12 Important...Alamance County ........................................................... 24 24 Alexander County ......Alleghany County ....................................................... 25 Ashe County ............Avery County ............................................................... 25 Buncombe County ... |  | Dailey, Shane R., Christiansen, Eric H, Dorais, Michael J., Kowallis, Bart J., Fernandez, Diego P., Johnson, Douglas M. (2018) Origin of the fluorine- and beryllium-rich rhyolites of the Spor Mountain Formation, Western Utah. American Mineralogist, 103 (8) 1228-1252 doi:10.2138/am-2018-6256 | Journal (article/letter/editorial) | | ~10% plagioclase, along with accessory fluorite, columbite, euxenite, fergusonite, monazite, thorite, and...pdf by Yonsei University user on 28 April 2019 DAILEY ET AL.: ORIGIN OF F- AND Be-RICH SPOR MOUNTAIN...Brush Beryllium and Composites owns and operates the mine. The beryllium ore at Spor Mountain (in the form...extension. BR = Basin and Range province and CP = Colorado Plateau and northern Rocky Mountains. (Color online...Yonsei University user on 28 April 2019 1230 DAILEY ET AL.: ORIGIN OF F- AND Be-RICH SPOR MOUNTAIN |  | | Book (edition) | | ulfenite, Rowley Mine, Maricopa County, 4 cm high specimen, Evan and Melissa Jones Collection, photo...Ebner Flagg Mineral Foundation Mark Hay Robert W. Jones Mineralogical Society of Arizona Tony Potucek Prescott...used mining districts as part of the locality description. These political and geographic district names...with a more descriptive term, metallic mineral district. This term shows the geochemical and mineralogical...reader to learn more about the geology of the district and to possibly predict the minerals that could |  | | Journal (article/letter/editorial) | | pegmatite, Sveconorwegian, Svecofennian, dating, columbite group minerals. INTRODUCTION The close genetic...occur, particularly in the Tørdal region (Nissedal district) (Ihlen & Müller 2009a). In some areas, the pegmatite...Hardanger (Tors gruve) The Hardanger pegmatite district, situated at the border of Rogaland and Hardanger...There exist no age data for the pegmatites. The columbite-(Fe) investigated in this study has the Natural...(Hidra) The abyssal and RE pegmatites of the Mandal district are scattered along or close to the coast between |  | | Journal (article/letter/editorial) | | of the Rare Earth Element Litter A. E. Williams-Jones† and O. V. Vasyukova Department of Earth and Planetary...Corresponding author: e-mail, anthony.williams-jones@mcgill.ca ISSN 0361-0128; doi: 10.5382/econgeo...8, 2017 Accepted: April 4, 2018 974 WILLIAMS-JONES AND VASYUKOVA ionic radius 75 pm. This is also...referred to as Landsverk 3, in the Iveland-Evje district north of Kristiansand in Norway. The mineral was...example, columbite [(Fe,Mn)Nb2O6], tantalite [(Fe,Mn)Ta2O6], and ixiolite [(Ta,Nb,Sn,Mn,Fe)4O8] commonly |  | | Journal (issue) | | MINERAL COLLECTIONS IN Organizea 6y EVAN JONES AND JIM & IMELDA KLEIN witli an I ntroauction 6y WENDELL...Mimetite on Barite 5.1 cm, from the Rowley mine, Maricopa County, Arizona. Dick Morris collection; Jeff Scovil...(only one known) for The Red Cloud Gold & Silver Mining Company (1880) Mark Hay collection Introduction...Steve Mas]ansky Dale Armstrong Bill Besse Bisbee Mining and Historical Museum Paul & Barbara Matt Lauren...Aleta Huskinson Mike & Mary Jaworski Evan & Bob Jones . l l L ~ L Jason New Marcus Origlieri Ronald |  | | Report (issue) | | 31 University of Nevada Press, Reno, Nevada 89557 USA Copyright © 2004 by University of Nevada Press Photographs...copyright © 2004 unless otherwise noted Map of Mining Districts and significant mineral occurrences of...Olivenite, 1.6-cm cluster, Majuba Hill Mine, Antelope district, Pershing County. N. Prenn collection. Photograph...production of environmental protection equipment. Mining and the discovery, identification, and development...to Nevada in 1929 and was actively involved in mining in the state and the western U.S. for the rest |  | | Book (edition) | | (Brazil). Malcolm Back (Canada), Henry L. Barwood (USA). Dmitriy Belakovskiy (Russia). Fabio Bellatreccia...(Italy), T.S. Ercit (Canada). Alexander Falster (USA). Jeffrey de Fourestier (Canada). Robert Gault (Canada)...William A. Henderson. Jr. (USA). D.D. Hogarth (Canada). J.L. Jam bor (Canada), Anthony R. Kampf (USA). Pave...Karnp-Moller (Denmark). Akira Kato (Japan). Lance E. Keams (USA). Elisabeth Kirchner (Austria), Uwe Kolitsch (Austria)...Republic). Per Nystcn (Sweden), David O'Hanlcy (USA). Filippo Olmi (deccased) (ltaly). Werner H. Paar |  | | Book (volume) | | up 165 for to Temiskaming Cochrane district read district. Ref. 4, under oruetite, add See also...198 *210 216 *220 225 *229 231 Fe 0.32 reaJ Rem. A nal. , is Fe 0.32, Si02 0.28. for F2O3 read...Group tabulation, after 2656 Pentlandite for (Fe, Ni)S read (Fe, Ni)9S8. — . . NOTES AND NEWS under Artif... for VVakatipu district, CoUingwood, 294 Zealand read Wakatipu 303 line district, 8 in synonomy...and the corresponding citation (Hudson Bay 309 mine). in Ref. 4, line Z, for 670 read 676. 310 in |  | | Journal (article/letter/editorial) | | including zircon, apatite, fluorite, monazite, columbite, thorite, and molybdenite. The Mo content of the...Audétat et al., 2000), and various skarn deposits (Fe, Cu, Mo, Pb, Zn, Ag, Au) (Meinert et al., 2005; Li...geology perspective (e.g., Stefanini and Williams-Jones, 1996; Audétat and Pettke, 2003; Audétat et al....discrimination between barren and mineralized systems is not clear. Two potentially very important parameters—the original...porphyry-skarn mineralization. Most porphyryskarn Cu-Au-Mo-Fe deposits and magnetite-apatite deposits occur along |  | | Journal (article/letter/editorial) | | NWT, Canada Alexander Timofeev† and A.E. Williams-Jones Department of Earth and Planetary Sciences, McGill...Nechalacho deposit. Niobium-bearing zircon, columbite(Fe), fergusonite-(Y), and samarskite-(Y) were identified...zones of the deposit, uranopyrochlore, and columbite-(Fe) were found outside the ore zones, and magmatic...minerals, variations in the composition of the columbite group minerals as a function of location in the...accompanied by the crystallization of magmatic columbite-(Fe) in the Upper ore zone. Fergusonite-(Y) crystallized |  | Melcher, Frank, Graupner, Torsten, Gäbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, Oberthür, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalum–(niobium–tin) mineralisation in African pegmatites and rare metal granites: Constraints from Ta–Nb oxide mineralogy, geochemistry and U–Pb geochronology. Ore Geology Reviews, 64. 667-719 doi:10.1016/j.oregeorev.2013.09.003 | Journal (article/letter/editorial) | | 1.2. Mineralogy NU 5. Mineral chemistry of columbite-tantalite, tapiolite, wodginite and ixiolite in...processes and sources 7.2. Compositional variation of columbite-tantalite, tapiolite and wodginite-ixiolite 7...granites and granitic rare-element IP pegmatites. Columbite-group minerals (CGM) account for the majority... Compositions of CGM are extremely D variable: Fe-rich types predominate in the Man Shield (Sierra...(Zimbabwe) and the Jos Plateau (Nigeria). Mn-rich columbite-tantalite is typical of the Alto Ligonha Province |  | Nie, Xiao, Wang, Zongqi, Chen, Lei, Yin, Jingwu, Xu, Haiming, Fan, Li, Chen, PuPu, Wang, Gang (2020) Mineralogical constraints on Nb–REE mineralization of the Zhujiayuan Nb (−REE) deposit in the North Daba Mountain, South Qinling, China. Geological Journal, 55 (6). 4845-4863 doi:10.1002/gj.3710 | Journal (article/letter/editorial) | | chemical analyses of biotite, apatite, rutile, columbite-group minerals, fersmite, monazite, and aeschynite-group...crystallization process. The distributions of the columbite-group, fersmite, monazite, and aeschynite-group... Kananian, granites (Linnen, Samson, Williams-Jones, & Chakhmouradian, Harlov, & Oberhänsli, 2015;...during magmatic-hydrothermal evolution Williams-Jones, 1990, 1996, 2006; Schmitt, Trumbull, Dulski, &...Marks, Wen- Emmermann, 2002; Sheard, Williams-Jones, Heiligmann, Pederson, & zel, Jacob, & Markl, 2015) |  | | Journal (article/letter/editorial) | | present of mining and metallurgy of lead . . . . . . . . . . . 18.7.2. Past and present of mining and metallurgy...hampering our access to mineral deposits, such as mining depth controlled among others by the geothermal...Hewett in 1927 who was able to demonstrate that in mining countries exploitation, export and import of metals...passed its climax. At the very end the domestic mining industry can no longer cater for the needs and...looked up in various publications such as the “World Mining Data”, a yearbook issued by Weber and Zsak (2007) | | | Journal (article/letter/editorial) | | present of mining and metallurgy of lead . . . . . . . . . . . 18.7.2. Past and present of mining and metallurgy...hampering our access to mineral deposits, such as mining depth controlled among others by the geothermal...Hewett in 1927 who was able to demonstrate that in mining countries exploitation, export and import of metals...passed its climax. At the very end the domestic mining industry can no longer cater for the needs and...looked up in various publications such as the “World Mining Data”, a yearbook issued by Weber and Zsak (2007) |  | | Journal (issue) | | Tucson, AZ 85715 602-299-5274 Promotions Manager Sue Jones 1601 Fairview Dr., Suite C Carson City, NV 89701.............191 by W. E. Wilson The Port Radium district, Northwest Territories, Canada .................in e s Steve Voynick* P.O. Box 1285 Leadville, Colorado 80461 If you’re a mineral collector, you know...typically abraded specimens you’ve found in the old mine dumps. And you’ve probably looked long and hard...Everyone has heard repeated warnings about entering old mine workings. But, face it, those deep, open shafts |  | | Journal (article/letter/editorial) | | Aley, Upper Fir and Eldor (Canada); Elk Creek (Nebraska USA); Tomtor (Russia)] or re-evaluated [e.g....Tapira and Salitre, together with the decommissioned mine at Catalão-I (Mitchell, 2015). One objective of...al., 2017), located adjacent to the Dead Horse Creek Road, northwest of the town of Marathon, approximately...- 0.66 wt.%); Panda Hill 0.43 - 0.87 wt.%; Elk Creek 0.67 wt.%) (see Mitchell, 2015). Experimental Methods...(Sr, Ti); ThNb4O12 (Th, Nb); Mn-hortonolite (Mn, Fe, Mg, Si); jadeite (Na,Al), individual REE- orthophosphate |  | | Book | | cobalt bloom 73 cobaltite 17 colemanite 54, 54 columbite 36 copiapite 61 copper 4, 5 copper vitriol 59...50 nickel bloom 73 nickel vitriol 60 niobate columbite 36 nitrates 38 northupite 49 octahedrite 34 ...masses is increased sufficiently they suddenly pass from a solid to a liquid state, and the temperature...silver has no great importance from the mining point of view due to its comparative rarity; it...suppliers are, in order, the USSR, Canada, and the USA (South Dakota, Nevada, Utah, Arizona, and California) |  | | Book | | much biased by science with too little sense of mine for beauty) will keep his memory and work, alive...so as to render mining of these rare-element pegmatites feasible. The traditional mining of pegmatitic...aplitic rocks. In light of more than 1000 years of mining and an intensive study of the deeper parts of the...deposits in the region are not very promising and mining in Germany is obviously a profession of the past...mineralogists and become an operational target for mining geologists. In an idealistic transect through the |  | | | | cobalt bloom 73 cobaltite 17 colemanite 54, 54 columbite 36 bastnasite 49 bauxite 37 bavenite 102, /03...50 nickel bloom 73 nickel vitriol 60 niobate columbite 36 nitrates 38 northupite 49 octahedrite 34 oligist...temperature is increased sufficiently they suddenly pass from a solid to a liquid state, and the temperature...Native silver has no great importance from the mining point of view due to its comparative rarity; it...suppliers are, in order, the USSR, Canada, and the USA (South Dakota, Nevada, Utah, Arizona, and California) |  | | Journal (article/letter/editorial) | | monazite-(Ce) and chevkinite-(Ce) from the Sin Quyen Fe-Cu-LREE-Au deposit, northwestern Vietnam Xiao-Chun...Quyen deposit in northwestern Vietnam is composed of Fe-Cu-LREE-Au ore bodies hosted in Proterozoic metapelite...allanite-(Ce) + aeschynite-(Ce) ± bastnäsite-(Ce) ± columbite-(Fe) ± ilmenite. The replacement of chevkinite-(Ce)...minerals from hydrothermal deposits. The Sin Quyen mine in northwestern Vietnam is a LREE-rich IOCG-type...LREE are hosted mainly in allanite-(Ce) [(Ca,REE)2(Fe,Al)3(SiO4)3(OH)], and there are also subordinate |
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