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| " Some Rare-Element ' Mineral Deposits ^ in Mainland China By K. Y. LEE ^ CONTRIBUTIONS TO ECONOMIC...of geologically similar environments in mainland China UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...distribution..-___----__--___._.____.__. Rare-earth-bearing iron ores._--_---_--_--______-_-_-___ Fluorite...quartz, and carbonate veins____-__-________--_. Pegmatites. ___--_--___-----------------_---_-_------_ Mineralogy...Tungsten-quartz veins.____-_---_--_-__--__-___-_----__ Pegmatites. _____-_--__--_-----_--------_--__----__--Disseminated |
 | Hulsbosch, Niels, Hertogen, Jan, Dewaele, Stijn, André, Luc, Muchez, Philippe (2014) Alkali metal and rare earth element evolution of rock-forming minerals from the Gatumba area pegmatites (Rwanda): Quantitative assessment of crystal-melt fractionation in the regional zonation of pegmatite groups. Geochimica et Cosmochimica Acta, 132. 349-374 doi:10.1016/j.gca.2014.02.006 | Journal (article/letter/editorial) |
| 349â374 www.elsevier.com/locate/gca Alkali metal and rare earth element evolution of rock-forming minerals...minerals from the Gatumba area pegmatites (Rwanda): Quantitative assessment of crystal-melt fractionation...formation of regionally zoned common and rare-element pegmatites. The magmatic evolution of these systems...and rare earth element (REE) analyses of rock-forming minerals (feldspars, micas and tourmaline), which...well-developed regional zonation sequence. The pegmatites are spatially and temporally related to peraluminous |
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| and the metal source of peribatholitic W quartz veins: Evidence from the Karagwe-Ankole Belt (Rwanda)...identiïŹcation of a magmatic source for granite-associated rare metal (W, Nb, Ta and Sn) mineralisation in metasedimenthosted...recurrent metal sourcing problem, we have studied the metasediment-hosted tungsten-bearing quartz veins...of the Nyakabingo deposit of the Karagwe-Ankole belt in Central Rwanda. The vein system (992 ± 2 Ma)...granitophile elements (Rb, Cs, W and Sn) and show alkali metal signatures equivalent to muscovite of less-diïŹerentiated |
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| (1987) Metallogeny of the northeastern Kibaran belt, Central Africa W. Pohl lnstitute of Geology, Technical...Germany The evolution of the intracontinental Kibaran belt spans the period from about 1400 to 950 Ma. Its...graniteisedimcnt contacts, with cupolas at tectonic highs. Pegmatites and quartz veins with Sn. W, NbiTa, Be and Li...platinum-group metals and Fe/Ti deposits form a belt parallel to the eastern margin of the Kibaran towards... 1. Introduction The middle Proterozoic Kibaran belt extends from the ZambiaiAngolaiZaire border in the |
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| Springer-Verlag 1972 Central and West African Rare-Metal Granitic Pegmatites, Related Aplites, Quartz Veins and...his studies of Central and West African rare-metal pegmatites and supplements them by the newest datas...then the classification of African raremetal pegmatites with the classifications obtained in U. S. S...kind of pegmatites. The author's conclusions may be summarised as follows: (a) The rare-metal pegmatite...enclosing rocks. (b) The spatial distribution of the rare-metal pegmatite types in or around the granitic intrusions |
 | Yuan, Feng, Liu, Jia-Jun, Carranza, Emmanuel John M., Zhang, Shuai, Zhai, De-Gao, Liu, Gang, Wang, Gong-Wen, Zhang, Hong-Yuan, Sha, Ya-Zhou, Yang, Shang-Song (2018) Zircon trace element and isotopic (Sr, Nd, Hf, Pb) effects of assimilation-fractional crystallization of pegmatite magma: A case study of the Guangshigou biotite pegmatites from the North Qinling Orogen, central China. Lithos, 302. 20-36 doi:10.1016/j.lithos.2017.12.022 | Journal (article/letter/editorial) |
| of the Guangshigou biotite pegmatites from the North Qinling Orogen, central China Feng Yuan, Jia-Jun...of the Guangshigou biotite pegmatites from the North Qinling Orogen, central China. The address for the...of the Guangshigou biotite pegmatites from the North Qinling Orogen, central China Zhang a,b a,b ...Science and Resources, China University of Geosciences (Beijing), Beijing 100083, China Economic Geology...and Mineral Resources, China University of Geosciences, Beijing 100083, China b , Shuai , Gong-Wen |
 | | Conference Proceedings (Volume) |
| UPPSALA, SWEDEN Mineral deposit research for a high-tech world Proceedings VOLUME 4 12th Biennial...UPPSALA, SWEDEN Mineral deposit research for a high-tech world Proceedings Volume 4 Edited by Erik...al. (ed.), 2013: Mineral deposit research for a high-tech world. Proceedings of the 12th Biennial SGA...Fennoscandian Shield. Mineral deposit research for a high-tech world. Proceedings of the 12th Biennial SGA...characteristics and genesis of the Caijiaying Zn-Au deposit, China .............................................. |
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| Pegmatites and their potential for mineral exploitation in Greenland No. 10 - January 2008 GEOLOGY...10 / 2008 Pegmatites and their potential for mineral exploitation in Greenland Pegmatites are important...of many commodities world wide. In Greenland pegmatites are wellknown, but their economic potential has...that are enriched in elements characteristic of pegmatites are the base for the presentation. The prospective...Introduction Pegmatites are suppliers of rare metals like beryllium, lithium and tantalum. Pegmatites also represent |
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| THEMATIC ISSUE, 253-270 (1987) Mineralized pegmatites in Africa 0. won Knorring and E. Condliffe Department...Sciences, University of Leeds, U.K. Potential rare-element pcgmatites are widespread o n the African...south ol the equator. along the Kibaran orogenic belt extending lrom Uganda. through Rwanda and Kivu....They arc a l s o prominent within the Mozambique belt in East Africa. Mozambique and Madagascar and within...morcovcr. within the Narnnqualand metamorphic complex along the Orange River belt. Another characteristic. lithiumbearing |
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| value of various genetic types of biotite metasomatites in a rare-metal pegmatite field F. N. Royzenman...value of various genetic types of biotite metasomatites in a rare-metal pegmatite field, International Geology...value of various genetic types of biotite metasomatites in a rare-metal pegmatite field Downloaded by [New...views on the origin of major zones of cesium-bearing biotite metasomatites in certain pegmatite fields....g a r d the biotite metasomatites as exocontact rocks, a result of rare-metal pegmatites interacting |
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| 1986. Includes index. ISBN 978-3-642-87264-8 I. Rare earth metals-Congresses. 2. Tantalum-Congresses...commodities that are in high demand. The lanthanides, better known as the rare-earth elements (REE), tantalum...duplication of more fundamental books (such as "Rare earth elements geochemistry"; Henderson, P., editor)...ensures a wide circulation of this compendium. The rare-earth elements include the following series of 15...prospeetors, they often oeeur tagether in some pegmatites, alkaline granites and earbonatites with their |
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| PEGMATITES OF EIGHT MILE PARK, FREMONT COUNTY, COLORADOXT E. Wrrr. HerNnrcu, Department of Mineralogy...Geologic history. Pegmatites Distribution. General structural features of pegmatites . . . History. Primary...Secondary units Interior pegmatites Marginal pegmatites Exterior pegmatites 42O 421 421 422 422 422...will be presented in a separate paper. 420 PEGMATITES OF EIGHT MILE PARK, COLORADO 42r area are flanked...consists chiefly of muscovite schist with minor biotite schist and quartzite. This series was intruded |
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| 24. T. A. P. KWAK W-Sn SKARN DEPOSITS Related Metamorphic Skams and Granitoids 25. P. LAZNICKA BRECCIAS...the data on deposits of useful minerals and ore-bearing type structures in the Precambrian. The material... 53 53 57 58 67 70 71 74 Chapter 3. Belomorian Belt V.A. Gorelov ................................................ 77 77 83 VIII Chapter 4. Ladoga Belt V.A. Gorelov & A.M. Larin ......................................... 2.6 R a r e m e t a l s a n d rare e a r t h s ................................... |
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| assemblages occur. The metasedimentary rocks include biotite-plagioclase gneisses, sillimanite-graphite schists...occur: a biotite granodiorite gneiss and a slightly foliated to massive muscovite and/or biotite granodiorite...porphyroblastic and graphic types. Between the biotite granodiorite gneiss and the metasedimentary rocks...sections cataclasis. Metamorphic effects are confineil to the choritization of biotite. A systematic statistical...that the biotite granodiorite gneiss was formed by metasomatic processes. The muscovite and biotite granodiorites |
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| crystalline rocks ___ -------- ___________ _ Metamorphic cycle____________________ -----_ Magmatic cycle...Beach placers __ -- ___ ---- ____ --------- __ China ____________________________________ _ Federation...-- __ Crystalline rocks in the western monazite belt in the Piedmont province __ Stokes County and Surry...------Crystalline rocks in the eastern monazite belt in the Piedmont province_Stream deposits in the..._____ Crystalline rocks in the western monazite belt in the Piedmont province___ Occurrences in the central |
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| MINERALOGY OF SPODUMENE PEGMATITES AND RELATED ROCKS IN THE TINâSPODUMENE BELT OF NORTH CAROLINA AND SOUTH... Georgia 30605, USA Abstract The TinâSpodumene Belt (TSB) along the border of North and South Carolina...amphibolite-facies mica schist and amphibolite. The spodumene pegmatites are unzoned and consist of medium- to very coarse-grained...(Ab98â99) in the replacement albiteâquartz assemblage. Rare, nonperthitic K-feldspar is slightly sodic (Or95â99)...and a trace of sodium (0.2â0.6 wt% Na2O). A Mn-bearing fluorapatite (altered to low-F and low-Mn apatite) |
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| Beryl-bearing Pegmatites in the Ruby Mountains and Other Areas in Nevada and Northwestern Arizona By...----___------_--_-Metamorphic rocks---_--_______-_--__----_-----__--------Biotite-muscovite granite._...___________________ 9. Examples of zoning in pegmatites of the Dawley Canyon area __________________...________________________ 11. Sketch map of beryl-bearing pegmatite on the Hummingbird claims, Mohave County...190 TABLES TABLE 1. Rare or accessory minerals in pegmatites or other beryl-bearing deposits of Nevada |
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| of upper-greenschist to amphibolite facies metamorphic grade. Three types of deposits (Northern, Central...veining style, alteration mineralogy and metamorphic grade of host rocks. Northern deposits, hosted in...veins with selvedges of quartz-chlorite-calcite-biotite-plagioclase assemblages. Central deposits, hosted...quartz veins with selvedges of quartz-actinolite-biotite-plagioclasecalcite assemblages. Southern deposits... consistent with a syn-deformational genesis at high temperatures. From Northern to Southern deposits |
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| 20, 2015 A DIOPSIDE-BEARING PEGMATITE NEAR ELLON. X L I I I . â A Diof side-bearing Pegmatite near Ellon...Buchan district of Aberdeenshire, a narrow belt of metamorphic rocks of sedimentary origin separates the...and contaminated masses of Haddo and Arnage. This belt is made up of the Fyvie Series of the Highland Schists...Series. East of Michaelmuir, where the sedimentary belt separating the Haddo and Arnage igneous masses crosses...Auchedly, excellent graphic pegmatites and tourmaline-biotite-pegmatites are to be seen. East of the |
 | Hulsbosch, Niels, Boiron, Marie-Christine, Thomas, Rainer, Van Daele, Johanna, Dewaele, Stijn, Muchez, Philippe (2019) Evaluation of the petrogenetic significance of melt inclusions in pegmatitic schorl-dravite from graphic tourmaline-quartz assemblages: Application of LA-ICP-QMS analyses and volume ratio calculations. Geochimica et Cosmochimica Acta, 244. 308-335 doi:10.1016/j.gca.2018.10.023 | Journal (article/letter/editorial) |
| inclusions in pegmatitic schorl-dravite from graphic tourmaline-quartz assemblages: application of LAICP-QMS...inclusions in pegmatitic schorl-dravite from graphic tourmaline-quartz assemblages: application of LA-ICPQMS...address: niels.hulsbosch@kuleuven.be KEYWORDS: tourmaline, melt inclusions, graphic intergrowth, pegmatite...= quartz-tourmaline-muscovite 1 ABSTRACT The composition of melt inclusions in tourmaline was studied...quartz-tourmaline intergrowth assemblages of common, muscovite â rare-element class pegmatites belonging |
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| students on a trip to the mining districts and the high peaks of the Adirondack Mountains. This experience...Detailed chemical studies of the members of the tourmaline group have expanded the occurrences of uvite...previously been identified as other members of the tourmaline group (Dunn et al.-1977). A century and a half...meteorites. Pete J. Dunn read the section on tourmaline, and Donald D. Hogarth read the sections on hauynite...Formation ................... . Minerals of Metamorphic Rocks .......................... . The crystalline |
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| Detailed chemical studies of the members of the tourmaline group have expanded the occurrences of uvite...previously been identified as other members of the tourmaline group (Dunn et al.-1977). A century and a half...meteorites. Pete J. Dunn read the section on tourmaline, and Donald D. Hogarth read the sections on hauynite.................................. The contact-metamorphic rocks..........................................Foster Mine, Putnam Co. Tourmaline, Schorl Bedford, Westchester Co. Tourmaline, Uvite Pierrepont, St. |
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| greenstone belt: a program overview J.A. Ayer 4. Compilation of the Abitibi greenstone belt in the TimminsâKirkland...Holloway Township gold camp, Abitibi greenstone belt, northeastern Ontario B. Luinstra and K. Benn 11...ultramafic volcanic rocks of the Shining Tree greenstone belt, northeastern Ontario, Canada H.S. Oliver, D.J....and geodynamic regimes in the Abitibi greenstone belt, Superior Province, Canada R. Sproule, C.M. Lesher...volcanological studies of the southwest BirchâUchi greenstone belt, Uchi Subprovince J.R. Devaney v 19. Project |
 | Jones, James V., Karl, Susan M., Labay, Keith A., Shew, Nora B., Granitto, Matthew, Hayes, Timothy S., Mauk, Jeffrey L., Schmidt, Jeanine M., Todd, Erin, Wang, Bronwen, Werdon, Melanie B., Yager, Douglas B. (2015) GIS-Based Identification of Areas with Mineral Resource Potential for Six Selected Deposit Groups, Bureau of Land Management Central Yukon Planning Area, Alaska. Open-File Report 2015-1021. US Geological Survey doi:10.3133/ofr20151021 | Report (issue) |
| Kokrines Hills, central Alaska, contain multiple rare earth element (REE) occurrences. Gamma ray scintillometer...0.01 Ă ore tonnage, metric tons metric tons of metal vi List of Abbreviations Used ADGGS AMRAP ANK...ton inductively coupled plasma mass spectrometry high field strength elements hydrologic unit code million...Reconnaissance platinum-group elements parts per million rare earth elements Sandstone uranium deposit metric...mapped for six selected mineral deposit groups: (1) rare earth element (REE) deposits associated with peralkaline |
 | Clemens, J. D., Buick, I. S., Kisters, A. F. M., Frei, D. (2017) Petrogenesis of the granitic Donkerhuk batholith in the Damara Belt of Namibia: protracted, syntectonic, short-range, crustal magma transfer. Contributions to Mineralogy and Petrology, 172 (7) doi:10.1007/s00410-017-1370-0 | Journal (article/letter/editorial) |
| of the granitic Donkerhuk batholith in the Damara Belt of Namibia: protracted, syntectonic, shortârange...the Southern Zone accretionary prism in the Damara Belt of Namibia. Each magma pulse had at least partly...crust · Heterogeneity · Source terrane · Damara Belt · Namibia Introduction Granitic rocks (sensu lato)...instances of granitic magmatism and the associated metamorphic events, the durations of magma-producing events...the Southern Zone accretionary prism of the Damara Belt of Namibia. Here we address the implications for |
