 | | Journal (article/letter/editorial) | | Rare-Metal Pegmatites from the Southeastern Desert, Egypt: Geology, Geochemistry, and Petrogenesis Gehad M...M. Saleh a a Nuclear Materials Authority, Egypt Published online: 06 Aug 2010. To cite this article:...Rare-Metal Pegmatites from the Southeastern Desert, Egypt: Geology, Geochemistry, and Petrogenesis, International...Rare-Metal Pegmatites from the Southeastern Desert, Egypt: Geology, Geochemistry, and Petrogenesis GEHAD M...P.O. Box 530, El-Maadi, Cairo, Egypt Abstract The pegmatite province of the Southeastern Desert (SED) |  | | Journal (article/letter/editorial) | | Sources of Colored Gemstones Simmonsite, Zapot pegmatite, Gillis Range, Mineral Co., Nevada, USA. Named...miarolitic cavities found near the centers of pegmatite bodies or in reaction zones between pegmatites...occur in pegmatites (Simmons 2007). Historically, pegmatite deposits in Brazil, Madagascar, Russia, and the...quartz or feldspar in the core or core margin of a pegmatite Aquamarine (green-blue to blue beryl variety)...massive quartz or feldspar of the centrally located pegmatite core zone or in the core margin, the region around |  | | Journal (article/letter/editorial) | | resource et al. 2012 this issue). This type of pegmatite contains base”: South America has reserves of...Southeast Asia and B). For example ores in the Tanco pegmatite (Manitoba, (10%), Russia and the Middle East (10%)...lithium hydroxide. By far the most important Li pegmatite is the Greenbushes deposit, which produced roughly...com; accessed December 2011). The Greenbushes pegmatite is also the major source of technical-grade Li...of cesium is almost exclusively from the Tanco pegmatite, Manitoba, Canada, although other pegmatites, |  | | Journal (issue) | | MINE ."Iii[! iil"J www.tandfonline.com/vram Pegmatite Minerals & Gems WILENS EXQUISITE MINERALI ...Cook 10 Southern California Pegmatite Gems Mark Mauthner 16 The Pegmatite Interest Group (PIG) Is Hog...Hog Heaven! David London Pegmatite gems, p. 70 18 Pegmatites William B. Simmons, Karen L. Webber, and...Cliff Trebilcock, Lifelong Field Collector of Pegmatite Minerals, Recipient of the Maine Mineral & Gem...Heritage Award Donald A. Dallaire 56 Maine Pegmatite Workshop: Sponsored by the Maine Mineral & Gem |  | | Journal (issue) | | in southwestern Fennoscandia: Backdrop to the pegmatite fields of southern Norway……………………………………………………………………………………...rare-element class pegmatites in the Borborema Province in NE-Brazil?...................................paleoclimate controls of lithium-cesium-tantalum (LCT) pegmatite genesis, exhumation, and preservation……………………...earth element mineralization in a rediscovered pegmatite in the Stettin Complex, Wausau Syenite Compley...REIMER, W. Mineralogical study of the Gonçalo Li-pegmatite deposit, Portugal……………………………………..23 FALSTER, |  | Dittrich, Thomas, Seifert, Thomas, Schulz, Bernhard, Hagemann, Steffen, Gerdes, Axel, Pfänder, Jörg (2019) Archean Rare-Metal Pegmatites in Zimbabwe and Western Australia - Geology and Metallogeny of Pollucite Mineralisations. Springer International Publishing. doi:10.1007/978-3-030-10943-1 | Book | | Western Australia Geology and Metallogeny of Pollucite Mineralisations SpringerBriefs in World Mineral...Western Australia Geology and Metallogeny of Pollucite Mineralisations 123 Thomas Dittrich Division...contain the rare zeolite group cesium mineral pollucite. At present, Cs and reserves of it are known in...and mineable quantities only from the two LCT pegmatite deposits at Bikita in the Zimbabwe Craton and...Craton in Canada, where pollucite occurs in monomineralic mineralisation. Both pegmatite deposits have a comparable |  | | Journal (article/letter/editorial) | | 2015 L.N. Rossovskiy The best known rare-metal pegmatite regions with precious stones ( transparent, beauti...with the parent granites. The morphology of the pegmatite bodies is extremely varied veins, lenses, plate-like...kamnyami i usloviya ikh formirovaniya (na and pollucite; 6) spodumene -microc line -albite primere Gindukusha)... Geophysics, and Mineral line, talltdte, and pOllUCite ( RoSSovskiy and Chmyrev, 1976). Raw-Materials...ROSSOVSKIY 35 70 FIGURE 1. Spatial distribution of pegmatite deposits with precious stones in Eastern Afghanistan |  | Galliski, M. A., Marquez-Zavalia, M. F., Lira, R., Cempirek, J., Skoda, R. (2012) Mineralogy and Origin of the Dumortierite-Bearing Pegmatites of Virorco, San Luis, Argentina. The Canadian Mineralogist, 50 (4) 873-894 doi:10.3749/canmin.50.4.873 | Journal (article/letter/editorial) | | Republic Abstract The Virorco dumortierite-bearing pegmatite dikes, in Sierra de San Luis, Eastern Pampean...a larger mafic–ultramafic intrusive belt. The pegmatite dikes are symmetrically zoned, with quartz, albite...fluorapatite, columbite-(Mn) to tantalite-(Mn), pollucite, gahnite, zircon, uraninite and thorite. Holmquistite...crystallized rare-element parental pegmatite. Keywords: granitic pegmatite, dumortierite, holtite, chrysoberyl...occurrences of pegmatite such as Huemul, a tourmaline-rich, beryltype rare-element pegmatite that shows evidence |  | | Journal (article/letter/editorial) | | of the pegmatites of the Eastern Brazilian Pegmatite Province Received: 27 October 1998 / Accepted: 22...precious stones for the Eastern Brazilian Pegmatite Province (EBPP) has been evaluated on the basis of...is the largest pegmatite province of South America. It was divided into the pegmatite districts of ItambeÂ...versus Ta/(Ta+Nb), and U, Na2O versus K/Cs for the pegmatite districts of AracËuaõÂ and Sa®ra show the widest...widest range in fractionation. These pegmatite districts are leaders in the production of gemquality tourmaline |  | | Journal (article/letter/editorial) | | Tools and Workflows for Grassroots Li–Cs–Ta (LCT) Pegmatite Exploration Benedikt M. Steiner Camborne School... This paper reviews the main controls of LCT pegmatite genesis relevant to mineral exploration programs...as industrial mineral deposits. Keywords: LCT; pegmatite; lithium; exploration; targeting 1. Introduction...decades research into rare metal Li–Cs–Ta (LCT) pegmatite mineralisation has predominantly focused on the...mineral exploration techniques applied to LCT pegmatite mineralisation have been published, covering (i) |  | Graupner, T., Melcher, F., Gäbler, H.-E., Sitnikova, M., Brätz, H., Bahr, A. (2010) Rare earth element geochemistry of columbite-group minerals: LA-ICP-MS data. Mineralogical Magazine, 74 (4) 691-713 doi:10.1180/minmag.2010.074.4.691 | Journal (article/letter/editorial) | | during progressive evolution of the melt in a pegmatite body (either Nb ? Ta or Fe ? Mn fractionation...melt. In general, CGM from each individual Ta-ore province are characterized by a predominance of one type...mineral-melt partitioning during crystallization of the pegmatite body and by secondary hydrothermal or weathering...causing addition, loss or redistribution of REE. Pegmatite bodies may contain up to several generations of...provide constraints on the genesis of rare-element pegmatite systems. Furthermore, it may be used as a valuable |  | Novák, M., Ertl, A., Povondra, P., Galiová, M. V., Rossman, G. R., Pristacz, H., Prem, M., Giester, G., Gadas, P., Škoda, R. (2013) Darrellhenryite, Na(LiAl2)Al6(BO3)3Si6O18(OH)3O, a new mineral from the tourmaline supergroup. American Mineralogist, 98 (10) 1886-1892 doi:10.2138/am.2013.4416 | Journal (article/letter/editorial) | | occurs in a complex (Li-bearing) petalite-subtype pegmatite with common lepidolite, Li-bearing tourmalines...Moldanubian Zone, Czech Republic. This zoned pegmatite dike cross-cuts a serpentinite body enclosed in...petalite, rare polylithionite, and locally rare pollucite. The optical properties and the single-crystal...(Li-bearing) pegmatite at Nová Ves near Český Krumlov, southern Bohemia, Czech Republic. The pegmatite belongs...Moldanubian pegmatite province along with about 100 other lepidolite- and elbaite-subtype pegmatite bodies |  | | Journal (article/letter/editorial) | | the Nile River or east to the shores of the Red Sea for further transport to the gem-cutting and goldsmithing...and sold many specimens of this beryl. These early red beryl crystals were very small, rather dull colored...Island) in the Red Sea. Possibly the rarest of all beryls, until the discovery of the unique red beryl of Utah...if not rare. A few special words about the Utah red beryl are not amiss here because of its extreme rarity...Smithsonian Institu tion. then, new deposits with red beryl were found in the rhyolites of the Wah Wah |  | Alves, Felipe Emerson André, Neumann, Reiner, Ávila, Ciro Alexandre, Faulstich, Fabiano Richard Leite (2019) Monazite-(Ce) and xenotime-(Y) microinclusions in fluorapatite of the pegmatites from the Volta Grande mine, Minas Gerais state, southeast Brazil, as witnesses of the dissolution–reprecipitation process. Mineralogical Magazine, 83 (4) 595-606 doi:10.1180/mgm.2019.43 | Journal (article/letter/editorial) | | occurs in the lithium-caesium-tantalum (LCT) pegmatite body A of the Volta Grande mine, Minas Gerais...at the Volta Grande mine. KEYWORDS: apatite, pegmatite, rare earth elements, Volta Grande mine, diss...clinopyroxenites (Krause et al. 2013); and (v) granitic pegmatite (Harlov, 2011). The observed textural similarities...the Volta Grande pegmatite swarm, located in the São João del Rei Pegmatite Province, south of Minas Gerais...evaluate the pegmatites of the São João del Rei Pegmatite Province as a potential REE source. Understand why |  | | Journal (article/letter/editorial) | | vapor inclusions in spodumene from the Tanco pegmatite, Manitoba, under confining pressure. At 25 8C...exercise caution when using thermobaric estimates of pegmatite crystallization inferred from microthermometric...microthermometry, spodumene, crystal-rich inclusions, pegmatite, hydrothermal diamond anvil cell. INTRODUCTION...Keketuohai no. 3 (aka Koktogay no. 3) rare-element pegmatite, Xinjiang, China, Lu et al. (1997) reported homogenization...crystal-rich inclusions from the Tanco rare-element pegmatite, Manitoba, under an external pressure of 200 MPa |  | | Journal (article/letter/editorial) | | a highly supersaturated state of the melt in pegmatite-forming bodies. Constitutional zone refining,...and eventually becomes the last liquid in the pegmatite body, appears to be the most likely mechanism...versus high field-strength elements (HFSE) in pegmatite-forming liquids lead to longrange and short-range...but gigantic crystals of rare minerals such as pollucite. Exploration for pegmatites as sources of economic...discoveries. However, the regional zonation of pegmatite bodies, and the chemistry of metasomatic alteration |  | | Journal (article/letter/editorial) | | Indicator of Pegmatite Evolution: The Case Study of Pegmatites from the Oxford Pegmatite Field (Maine...Indicator of Pegmatite Evolution: The Case Study of Pegmatites from the Oxford Pegmatite Field (Maine...Oxford County pegmatites and the Palermo No. 1 pegmatite, record significant compositional variations according...slopes for those associated with the intermediate pegmatite, and negative or flat slopes in garnets from the...garnet; pegmatites; petrogenetic indicator; Oxford pegmatite field; Maine Received: 7 June 2021 Accepted: |  | Čopjaková, Renata, Prokop, Jiří, Novák, Milan, Losos, Zdeněk, Gadas, Petr, Škoda, Radek, Holá, Markéta (2021) Hydrothermal alteration of tourmaline from pegmatitic rocks enclosed in serpentinites: Multistage processes with distinct fluid sources. Lithos, 380. 105823pp. doi:10.1016/j.lithos.2020.105823 | Journal (article/letter/editorial) | | Sources of fluids include (i) fluids exsolved from pegmatite melt (Na, K, Ca, ± Li), particularly in the more...fluid mixing lP Key words: tourmaline; granitic pegmatite; tourmaline replacement; hydrothermal alteration;...Oslavany II) and more evolved, complexly zoned pegmatite dikes with Be -p minerals (Věžná II, Věžná I);...the last type has extremely fractionated albite-pollucite zone re containing Li and Cs minerals. The examined...in relation to host serpentinites and parental pegmatite rock. Moreover, the behavior of B in granitic |  | Zhou, Qifeng, Qin, Kezhang, Tang, Dongmei, Wang, Chunlong, Tian, Ye, Sakyi, Patrick Asamoah (2015) Mineralogy of the Koktokay No. 3 pegmatite, Altai, NW China: implications for evolution and melt–fluid processes of rare-metal pegmatites. European Journal of Mineralogy, 27 (3) 433-457 doi:10.1127/ejm/2015/0027-2443 | Journal (article/letter/editorial) | | PrePub Article Mineralogy of the Koktokay No. 3 pegmatite, Altai, NW China: implications for evolution and...Legon-Accra, Ghana Abstract: The Koktokay No. 3 pegmatite is the largest Li-Be-Nb-Ta-Cs pegmatitic rare-metal...beryl from the outer to inner zones of the No. 3 pegmatite. From previous studies on tourmaline and beryl...beryl, potential tracers of the degree of pegmatite evolution could be found by comparing with accepted indicators...trends from the outer to inner zones of this pegmatite. The Sc, Y, Li, Ta contents and Y/Ho value of |  | | Journal (article/letter/editorial) | | 10.3749/canmin.1600075 THE SVECONORWEGIAN PEGMATITE PROVINCE – THOUSANDS OF PEGMATITES WITHOUT PARENTAL...Sveconorwegian pegmatite province in southern Norway and southwest Sweden hosts seven rareelement pegmatite districts...magmatism during post-orogenic extension. The pegmatite formation principally comprises four periods restricted...sectors). The observed relationships between pegmatite formation and regional high-grade metamorphism...In light of this, the genetic criteria of the pegmatite family classification scheme [NYF versus Lithium-Cesium-Tantalum |  | 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) | | Schist Belt (western Zimbabwe) 4.3.3. Orange River Pegmatite Belt (Namibia, South Africa) AC 4.3.3.1. Radiometric...4.1. Rare metal granites of the Eastern Desert (Egypt) 4.4.1.1. Radiometric data 4.4.1.2. Mineralogy 4...Radiometric data 4.4.2.2. Mineralogy 4.4.3. Alto-Ligonha Province (northern Mozambique) 4.4.3.1. Radiometric data...3.2. Kamativi Schist Belt 5.3.3. Orange River Pegmatite Belt 5.4. Late Neoproterozoic to early Paleozoic...Eastern Desert (Egypt) 5.4.2. Pegmatites of Ethiopia and Somalia 5.4.3. Alto-Ligonha Province (Mozambique) |  | Siegel, Karin, Wagner, Thomas, Trumbull, Robert B., Jonsson, Erik, Matalin, Gabriella, Wälle, Markus, Heinrich, Christoph A. (2016) Stable isotope (B, H, O) and mineral-chemistry constraints on the magmatic to hydrothermal evolution of the Varuträsk rare-element pegmatite (Northern Sweden) Chemical Geology, 421. 1-16 doi:10.1016/j.chemgeo.2015.11.025 | Journal (article/letter/editorial) | | hydrothermal evolution of the Varuträsk rare-element pegmatite (Northern Sweden) Karin Siegel a, Thomas Wagner...online 25 November 2015 Keywords: Rare-element pegmatite Boron isotopes Tourmaline SIMS Fluid exsolution...internal evolution of the Varuträsk rare-element pegmatite (Skellefte District, Northern Sweden) has been...and intermediate zones and a quartz core. The pegmatite displays considerable rare-element enrichment...culminating in the formation of albite-lepidolite and pollucite units in the innermost zones. Major and trace |  | | Journal (article/letter/editorial) | | magmatic–hydrothermal transition in rare-element pegmatite crystallization are obscure, and the role of hydrothermal...columbite-group minerals (CGM) from a rare-element pegmatite of the albite-spodumene subtype from Aclare, southeast...main Ta mineralization stage appears late in the pegmatite-forming process. Most researchers agree that fluid...fluid exsolution occurs during pegmatite formation, which is documented by miarolitic cavities, fluid...micas are routinely analyzed in rare-element pegmatite exploration studies, published data for Sn and |  | | Journal (article/letter/editorial) | | Kenticha mine (Ethiopia) and in the Alto Ligonha Province (Mozambique). Production from pegmatites and related...typical of the Alto Ligonha Province (Mozambique), the Arabian-Nubian Shield (Egypt, Ethiopia) and the Tantalite...1992; Černý et al., 2005). The provenance of pegmatite magmas remains poorly understood. Based on a study...affiliation and rare-element signature of the granite-pegmatite systems”. Peraluminous granites and associated...former Rhodesia (now Zimbabwe), Katanga (former province of the DRC) and Nigeria. Democratic Republic of |  | | Journal (article/letter/editorial) | | Hills, South Dakota: Implications concerning pegmatite evolution C. K. SHEARER and J, J. PAPIKE Institute...relationships among pegmatites and among pegmatite zones within a single pegmatite. The K/Rb and Rb/Sr ratios and...Cs contents of the feldspars within each zoned pegmatite, to a first approximation, arc consistent with...potassium I%tspar appear to be diagnostic of the pegmatite mineral assemblage. The relationship between K/Rb...for the utilization of pegmatite minerals as geochemical recordem of pegmatite petro8enesi.s. ~uanti~tive |
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