 | | 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) |  | Dill, Harald G., Skoda, Radek, Weber, Berthold, MĂŒller, Axel, Berner, Zsolt A., Wemmer, Klaus, Balaban, Sorin-Ionut (2013) Mineralogical and chemical composition of the Hagendorf-North Pegmatite, SE Germany â a monographic study. Neues Jahrbuch fĂŒr Mineralogie - Abhandlungen: Journal of Mineralogy and Geoche, 190 (3) 281-318 doi:10.1127/0077-7757/2013/0244 | Journal (article/letter/editorial) | | and chemical composition of the HagendorfNorth Pegmatite, SE Germany â a monographic study Harald G. Dill...Hagendorf-North is a zoned Li-Nb-P-feldspar-quartz pegmatite located W of the village of Hagendorf and about...Hagendorf-South deposit which once was the largest feldspar pegmatite in Central Europe. Hagendorf-North also known...already before the onset of World War II, the pegmatite has no longer been considered an economic target...size in the shadow of this huge Hagendorf-South pegmatite is due to its overall role as feeder system to |  | Graupner, T., Melcher, F., GĂ€bler, H.-E., Sitnikova, M., BrĂ€tz, 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 |  | | Journal (article/letter/editorial) | | [Ore Geology Reviews 69: 417-561]. Keywords: Pegmatite; applied geomorphology; weathering; heavy minerals;...How does the primary mineral association of the pegmatite affect the supergene alteration and the geomorphological...relevant for the classification of the primary pegmatite as for the evolution of the pegmatitic landscape...classification scheme (Table 2). The tabular Indepencia Pegmatite is taken as an example which crops out on top...landform can be observed at La Elsa, where the pegmatite is surrounded by a mediumgrained holocrystalline |  | | Journal (article/letter/editorial) | | INDICATORS OF THE PHYSICOCHEMICAL CONDITIONS OF PEGMATITE FORMATION a Yu. M. Sokolov & V. V. Khlestov ...INDICATORS OF THE PHYSICOCHEMICAL CONDITIONS OF PEGMATITE FORMATION, International Geology Review, 32:11...INDICATORS OF THE PHYSICOCHEMICAL CONDITIONS OF PEGMATITE FORMATION Yu. M. Sokolov and V. V. Khlestov (Institute...chemical composition of pegmatite garnets, especially those the Altay pegmatite belt of the Soviet Union...conditions of the initial and secondary phases of pegmatite formation. Garnet compositions are thus very important |  | | 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 |  | | Journal (article/letter/editorial) | | which are common to the Hagendorf-Pleystein Pegmatite Province, SE Germany, and present in many ensialic...different lithologies abundant in graphite and muscovite can easily be distinguished by its different shades...the most distal part of the pegmatite system (Fig. 4). Towards the pegmatite stock, lithotypes 5 and 6...found around Pleystein in the hanging wall of the pegmatite stock (Fig. 2). 4.2 The lithotypes of the siliceous...planes, a structural setting also known from pegmatite deposits elsewhere in the world (Fig. 7c, d). |  | | Journal (article/letter/editorial) | | aplites of the Pala Chief and Elizabeth R layered pegmatite-aplite dikes, Pala District, California, and the...of white, finegrained plagioclase + quartz + muscovite +/â black tourmaline and thin laminations defined...USA incompatible character of Zn in evolving pegmatite-aplite melts and shows the usefulness of gahnite...measured here may indicate a source of granitic pegmatite-aplite. Keywords Gahnite . Aplite . California...Mg]Al2O4), occurs as an accessory mineral in granitic pegmatite dikes (e.g., NĂȘmec 1973; Batchelor and Kinnaird |  | | Journal (article/letter/editorial) | | crystallization of biotite and muscovite. Crystallization of biotite and muscovite increases Ta/Nb and reduces...Ta. Keywords Rare metal Deposit Biotite Muscovite Granite fractionation Anatexis Granite classification...Chevychelov et al. 2010; CÌernyÌ et al. 2012). Muscovite also has been implicated as a mineral able to...demonstrate the important role of biotite and muscovite in fractionation of tantalum from niobium in granitic...References Mt Cassiterite (Wodgina), Australia pegmatite 2890â2,830 35 50 250 5 \60 Sn (Sweetapple |  | | Journal (article/letter/editorial) | | (pseudopegmatite, metapegmatite, pegmatoid, pegmatite, and plutonic pegmatite), the shape and the structure of pegmatites...geodynamic setting. Central Europe has not the largest pegmatite deposits, yet it contains a crustal section with...and composition, with the Hagendorf-Pleystein Pegmatite Field being at the heart of this region, in SE...recent investigations of the Hagendorf-Pleystein Pegmatite Field, one of the best and most intensively studied...get a full-blown 3-dimensional view of the pegmatite province. This regionally focused study was only taken |  | | Journal (article/letter/editorial) | | 10.3749/canmin.1600075 THE SVECONORWEGIAN PEGMATITE PROVINCE â 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 |  | | Report (chapter) | | (e-mail: tkachev@sgm.ru) Abstract: Since c. 3.1 Ga, pegmatite mineral deposits in orogenic areas have been formed...by pegmatites in Gondwanan blocks only. Each pegmatite class is characterized by a life cycle of its...deteriorating gradually after the Early Precambrian. Muscovite pegmatites first appeared in the Palaeoproterozoic...PalaeozoicâMesozoic boundary. The miarolitic class of pegmatite deposits in orogenic setting first came into being...dominated the pegmatite metallogeny of many Phanerozoic belts. The evolution of the pegmatite classes was |  | | Journal (article/letter/editorial) | | PEGMATITES FROM THE PAMPEAN PEGMATITE PROVINCE, ARGENTINA: IMPLICATIONS FOR PEGMATITE FRACTIONATION ADRIANA...Sin Nombre pegmatites) and Conlara (Nancy pegmatite) pegmatite districts, Argentina, was analyzed to investigate...relationship between its chemistry, pegmatite mineralogy, and pegmatite melt evolution. Based on the molecular...for granitic pegmatites. Gahnite from the Nancy pegmatite has higher Mg and Mn contents than gahnite from...from the pegmatites of the Comechingones pegmatite district. Chemical variation within gahnite crystals |  | | Journal (article/letter/editorial) | | Geochemistry of muscovite from pegmatites of the Eastern Brazilian pegmatite province: a clue to petrogenesis...stern@unibas.ch Abstract: Single crystals of muscovite (N = 143) from diïŹerent zones of selected granitic...gem-producing districts of the Eastern Brazilian Pegmatite Province (northern Araçuai and western Governador...AlVI from 1.71 to 1.90 apfu. Trace elements in muscovite are significant indicators for the economic potential...diïŹerentiation degree and origin of the magma. Muscovite with higher Li and B contents is characteristic |  | Beurlen, H., Thomas, R., Melgarejo, J. C., Da Silva, J. M. R., Rhede, D., Soares, D. R., Da Silva, M. R. R. (2013) Chrysoberyl-sillimanite association from the Roncadeira pegmatite, Borborema Province, Brazil: implications for gemstone exploration. Journal of GEOsciences, 58 (2) 79-90 | Journal (article/letter/editorial) | | te association from the Roncadeira pegmatite, Borborema Province, Brazil: implications for gemstone exploration...occurrence of chrysoberyl in the Borborema Pegmatite Province (BPP) in northeastern Brazil is reported...boulders in the dumps covering the Roncadeira pegmatite, worked in the 1940âs for Sn- and Ta-ore concentrate...crosscutting banded sodic aplite facies of the pegmatite. Along the crystal borders, the chrysoberyl (Cbl)...chrysoberyl by the reaction Beryl + albite + muscovite + H+ = chrysoberyl + quartz + sillimanite + Na |  | | Journal (article/letter/editorial) | | Tools and Workflows for Grassroots LiâCsâTa (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 LiâCsâTa (LCT) pegmatite mineralisation has predominantly focused on the...mineral exploration techniques applied to LCT pegmatite mineralisation have been published, covering (i) |  | SĂĄnchez-Muñoz, Luis, MĂŒller, Axel, AndrĂ©s, Sol LĂłpez, Martin, Robert F., Modreski, Peter J., de Moura, Odulio J.M. (2017) The PâFe diagram for K-feldspars: A preliminary approach in the discrimination of pegmatites. Lithos, 272. 116-127 doi:10.1016/j.lithos.2016.10.030 | Journal (article/letter/editorial) | | pegmatites with quartz, subsolvus feldspars, and muscovite as the major primary minerals. RI Finally, group...orogens, such as in the Eastern Brazilian Pegmatite Province as the result of the collision of cratons...significant departures from the bulk composition of the pegmatite-forming magma. Yet there is a pressing need to...representative alkali feldspar from 31 carefully evaluated pegmatite localities covering a wide range of mineralogy...MANUSCRIPT geologist mapping uncharted territory in a pegmatite district. Our aim in this research is to test |  | | Journal (article/letter/editorial) | | of the pegmatites of the Eastern Brazilian Pegmatite Province Received: 27 October 1998 / Accepted: 22...Brazilian Pegmatite Province (EBPP) has been evaluated on the basis of 530 K-feldspar and 550 muscovite major...is the largest pegmatite province of South America. It was divided into the pegmatite districts of ItambeĂ...versus Ta/(Ta+Nb), and U, Na2O versus K/Cs for the pegmatite districts of AracĂuaÔà and SaÂźra show the widest...widest range in fractionation. These pegmatite districts are leaders in the production of gemquality tourmaline |  | Melcher, Frank, Graupner, Torsten, GĂ€bler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, OberthĂŒr, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalumâ(niobiumâtin) mineralisation in African pegmatites and rare metal granites: Constraints from TaâNb oxide mineralogy, geochemistry and UâPb 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) |  | Dill, Harald G., Garrido, Mirta M., Melcher, Frank, Gomez, Maria C., Luna, Liliana I. (2012) Depth-related variation of tourmaline in the breccia pipe of the San Jorge porphyry copper deposit, Mendoza, Argentina. Ore Geology Reviews, 48. 271-277 doi:10.1016/j.oregeorev.2012.04.006 | Journal (article/letter/editorial) | | draviteâschorl solid solution series with some quartz, muscovite, orthoclase, kaolinite, Cu sulïŹdes and arsenopyrite...Locally, green, red, blue and multicolored tourmalines are so abundant in pegmatite that they can be...deposits in LCT pegmatites of the Borborema pegmatite province, NE Brazil (Beurlen et al., 2009). Due to...pure potassium feldspar with very little sodium. Muscovite can be found over the full length of the drill...the surface, kaolinite replaces Kâfeldspar and muscovite. Quartz is a common constituent in the tourmaline |  | StrmiÄ PalinkaĆĄ, , PalinkaĆĄ, , Neubauer, , Scholz, , Ć oĆĄtariÄ, , Bermanec, (2019) Formation Conditions and 40Ar/39Ar Age of the Gem-Bearing BoqueirĂŁo Granitic Pegmatite, Parelhas, Rio Grande do Norte, Brazil. Minerals, 9 (4) 233 doi:10.3390/min9040233 | Journal (article/letter/editorial) | | 40Ar/39Ar Age of the Gem-Bearing BoqueirĂŁo Granitic Pegmatite, Parelhas, Rio Grande do Norte, Brazil Sabina...granitic pegmatite, alias Alto da Cabeça pegmatite, is situated in Borborema Pegmatitic Province (BPP) in...in Northeast Brazil. This pegmatitic province hosts globally important reserves of tantalum and beryllium...studied lithium-cesium-tantalum BoqueirĂŁo granitic pegmatite intruded meta-conglomerates of the Equador Formation...± 5.8 Ma; 40 Ar/39 Ar plateau age of muscovite). The pegmatite exhibits a typical zonal mineral pattern |  | | Journal (article/letter/editorial) | | Pilbara pegmatite province in the Archean North Pilbara Craton contains at least 120 pegmatite deposits...deposits in over 27 pegmatite groups and fields, including the giant Mount Cassiterite tantalum orebody in...in the Wodgina pegmatite district. Generally, rare metal pegmatites in the province are hosted by mafic-ultramafic...that have given rise to different petrogenetic pegmatite suites can be identified in processed radiometric...character that permitted formation of significant pegmatite mineralization. They represent the culmination |  | Abdel Gawad, Ahmed E., Ene, Antoaneta, Skublov, Sergey G., Gavrilchik, Alexandra K., Ali, Mohamed A., Ghoneim, Mohamed M., Nastavkin, Aleksey V. (2022) Trace Element Geochemistry and Genesis of Beryl from Wadi Nugrus, South Eastern Desert, Egypt. Minerals, 12 (2) 206 doi:10.3390/min12020206 | Journal (article/letter/editorial) | | of Beryl from Wadi Nugrus, South Eastern Desert, Egypt Ahmed E. Abdel Gawad 1, * , Antoaneta Ene 2, * ...of Beryl from Wadi Nugrus, South Eastern Desert, Egypt. Minerals 2022, 12, 206. https://doi.org/ Nuclear...Materials Authority, P.O. Box 530, El-Maadi, Cairo, Egypt; dr_mohamed1966@yahoo.com (M.A.A.); moh.gho@mail...Roman mines at Wadi Nugrus, South Eastern Desert of Egypt. It ranges from small crystals to 10 mm in size...trace element geochemistry; zoning; Wadi Nugrus; Egypt Academic Editor: Frederick Lin Sutherland Received: |  | | Journal (article/letter/editorial) | | GEOCHEMISTRY OF PHOSPHATES AND SILICATES IN THE SAPUCAIA PEGMATITE, MINAS GERAIS, BRAZIL: GENETIC IMPLICATIONS Maxime...The Sapucaia pegmatite is located in the well-known Eastern Brazilian Pegmatitic Province (EBPP), Minas...Minas Gerais, Brazil. Detailed mapping of the pegmatite body revealed five zones, showing distinct mineral...quartz core (Q). Phosphate masses found in the pegmatite contains two different assemblages: assemblage...geochemically primitive LCT-type pegmatite. The degree of differentiation of the pegmatite increases from the border |  | | Journal (article/letter/editorial) | | K-feldspar and Muscovite in Rare-element Pegmatites and Granites from the Totoral Pegmatite Field, San Luis...K-feldspar for K, P, Sr, Ba, Rb, Cs, Ga, and of muscovite for the same elements plus Nb and Ta, was used...southernmost pegmatitic ïŹeld of the Pampean pegmatite province in Argentina. The variation of K/Rb-Cs, K/Cs-Rb...different magmatic units. The Ta-Cs diagram for muscovite reveals that none of the studied pegmatites exceed...fractionation trend, geochemistry, K-feldsparâmuscovite, rare-element pegmatite, S-type granite, Totoral pegmatitic |
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