 | Dittrich, Thomas, Seifert, Thomas, Schulz, Bernhard, Hagemann, Steffen, Gerdes, Axel, PfĂ€nder, 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 | | Jörg PfĂ€nder Archean Rare-Metal Pegmatites in Zimbabwe and Western Australia Geology and Metallogeny... âą âą âą âą Archean Rare-Metal Pegmatites in Zimbabwe and Western Australia Geology and Metallogeny...quantities only from the two LCT pegmatite deposits at Bikita in the Zimbabwe Craton and Tanco in the Superior...occurs in monomineralic mineralisation. Both pegmatite deposits have a comparable regional geological...imminent depletion of the pollucite resources at Bikita stimulated the specialised search for pollucite |  | | Journal (article/letter/editorial) | | MORPHOLOGICAL FEATURES OF BERYL FROM THE BIKITA GRANITIC PEGMATITE, ZIMBABWE PETR CÌERNY̧ Department of Geological...evolution of beryl in the Bikita rare-element granitic pegmatite, in Zimbabwe, was examined by analyzing...deposit. From the outer to the inner zones of the pegmatite, generally corresponding to the least up to the...more evolved samples from the inner zones of the pegmatite body, Cs becomes the main charge-balancing cation...morphology, lithium, cesium, granitic pegmatite, Bikita, Zimbabwe. SOMMAIRE Nous avons examinĂ© lâĂ©volution |  | | Journal (article/letter/editorial) | | by the subsequent crystallization of (Li-free) quartz and feldspars to the point of producing the Li-rich...the direction of crystallization from massive pegmatite into the miarolitic cavity. (d) A lepidolite âskullâ...(muscovite) and dark (biotite) micas of the outer pegmatite zones (e.g., Neiva 2014). That succession reflects...nature of Li in the quartz and feldspars that constitute the bulk of the pegmatite composition. In this...chemical study of micas from the giant Tanco pegmatite, Manitoba, found that the most Li-rich micas, |  | | Report (issue) | | (RlE) and recoverable (rlE) lithium resources in pegmatite deposits and districts, listed by country- - -...marginal and subeconomic lithium resources in pegmatite deposits and districts, listed by country - -...excess capacity such as currently exist, some pegmatite operations cannot compete with brine operations...Kingdom. No geologic definition of a deposit (or district) is used for compiling records for this report...number of records to the lithium resources of a district or even of a nation was not done with the same |  | | Journal (article/letter/editorial) | | virgilite (hexagonal) have been determined for quartz-saturated subsolidus conditions. The result is...quantitative P-T phase diagram that is applicable to quartz-saturated lithium aluminosilicate assemblages in...with values obtained from calorimetry. Under the quartz-saturated conditions that prevail in pegmatites...proportions of other phases in the chemically complex pegmatite system. Thus, the lithium aluminosilicate phase...spodumene + quartz or eucryptite + quartz, and accounts for the apparent stability of eucryptite + quartz at low |  | | Journal (article/letter/editorial) | | Rhodesia, however, large-scale mining operations at Bikita for lithium minerals (Cooper, 1961 ; Wilson and...other lithium minerals except in the Mterikati pegmatite. Lithiophorite is the only other lithium mineral...the Dam Site pegmatite. The refractive indices of montebrasite from the Benson 2 pegmatite (no. 13, table...chemical analysis after correction for intergrown quartz and apatite (see table III). Montebrasite of lower...replaces montebrasite in a sample from the Bikita pegmatite and members of the goyazite and possibly of |  | | Journal (article/letter/editorial) | | AB00023 THE KAMATIVI PEGMATITE: AN OPPORTUNITY FOR ECONOMIC DEVELOPMENT IN ZIMBABWE? RICHARD A. SHAW§ British...Witwatersrand, South Africa Keywords: Kamativi, Zimbabwe, ASM, tin, lithium. INTRODUCTION The last few...currently accounting for about 40% of global supply. Zimbabwe is currently the worldâs ïŹfth largest lithium...lithium in Zimbabwe currently comes from pegmatites, with production chieïŹy from the Bikita Pegmatite. Other...Other pegmatite prospects of interest include Arcadia (Prospect Resources), Zulu (Premier African Minerals) |  | | Journal (article/letter/editorial) | | hereis (1) plagioclase, quartz,muscovite, (2) plagioclase, quartz, (8) quartz,perthite,plagioclase, (4)...perthite,quartz,(5) quartz,plagioclase, perthite,spodumene(or petalite),amblygonite, (6) quartz,spodumene...spodumene (or petalite),(7) quartz,microcline or perthite,(8) quartz,and (9) lepidoliteor lithian mica, plagioclase...plagioclase, quartz,microcline. Assemblages $ and 5 are subdividedto showverticalchangesin perthiteabundance...lastpositionin the sequence, followingthe monomineralic quartz assemblage, because sizableconcordant quartzbodiesarein |  | 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) | | NU 4.1.2. Congo Craton (DRC) 4.1.3. Zimbabwe Craton (Zimbabwe) 4.1.4. Kaapvaal Craton (South Africa)...Kamativi Schist Belt (western Zimbabwe) 4.3.3. Orange River Pegmatite Belt (Namibia, South Africa) AC...Birimian TE 5.1.4. Kaapvaal Craton D 5.1.3. Zimbabwe Craton 5.2.2. North-eastern DRC 5.3. Neoproterozoic...3.2. Kamativi Schist Belt 5.3.3. Orange River Pegmatite Belt 5.4. Late Neoproterozoic to early Paleozoic...presented for 13 rare-element granite NU and pegmatite districts in Africa, covering Archean, Paleoproterozoic |  | Kesler, Stephen E., Gruber, Paul W., Medina, Pablo A., Keoleian, Gregory A., Everson, Mark P., Wallington, Timothy J. (2012) Global lithium resources: Relative importance of pegmatite, brine and other deposits. Ore Geology Reviews, 48. 55-69 doi:10.1016/j.oregeorev.2012.05.006 | Journal (article/letter/editorial) | | Global lithium resources: Relative importance of pegmatite, brine and other deposits Stephen E. Kesler a...online 14 May 2012 Keywords: Lithium Resource Pegmatite Brine Salar Evaporite Electric vehicle Lithium-ion...geological features of the best characterized pegmatite, brine and other types of lithium deposits and...an order of magnitude larger than the average pegmatite deposit (0.11 Mt Li) and that brine deposits,...for large-scale, long-term production than do pegmatite deposits. However, individual brine deposits differ |  | 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...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...LCT pegmatite locations of central and southern Africa. These include: (1) the Homestead pegmatite, Tantalite |  | | Journal (article/letter/editorial) | | and zircon crystals from a Southern California pegmatiteâRocks and Mineralsâpp. 245-246, May-June 1955...Monazite and Cyrtolite crystals from Day, New York pegmatiteâ Rocks and Mineralsâpp. 328-330âJulyAugust, I960...Shaub, B. M. (1940) Age of uraninite from McLear pegmatite near Richville Station, St. Lawrence County, New...remarkable geological features is the abundance of pegmatite dykes. To appreciate the economic importance of...rocks to give pegmatite masses and veins. The major mineralogical constituents of pegmatite are those of |  | | Journal (article/letter/editorial) | | steeply dipping, tabular bodies in the Penobscot quartz-mica schist near the Waldoboro granite. A narroxv...subdividedinto: (1) a narrow quartz-muscoviteborder zone; (2) a narrow albite-quartz-muscovite wall zone; (3)...(3) and an albite-quartz-spodumene-perthite core that constitutes most of the pegmatite. Cross-cutting,... fine-grained, quartz-albitespodumene-muscovitelensesare found within pegmatite cores. The bulk mineralogy...megascopicmineral point-counts. There is a decreaseof albite, quartz, and muscovite and an increase of spodumeneand |  | Wang, Zhen, Li, Jiankang, Chen, Zhenyu, Yan, Qinggao, Xiong, Xin, Li, Peng, Deng, Jingyi (2021) Evolution and Li Mineralization of the No. 134 Pegmatite in the Jiajika Rare-Metal Deposit, Western Sichuan, China: Constrains from Critical Minerals. Minerals, 12 (1) 45 doi:10.3390/min12010045 | Journal (article/letter/editorial) | | Evolution and Li Mineralization of the No. 134 Pegmatite in the Jiajika Rare-Metal Deposit, Western Sichuan...Evolution and Li Mineralization of the No. 134 Pegmatite in the Jiajika Rare-Metal Deposit, Western Sichuan...deposit in Asia, and the No. 134 pegmatite dike is the largest lithium pegmatite under mining conditions in...textures and minerals in the Jiajika No. 134 pegmatite, two zones (the barren Zone I and the spodumene...evolution and the cooling path of the Jiajika No. 134 pegmatite. From the outer zone inwards, grain size gradually |  | | Journal (article/letter/editorial) | | appreciate the basic facts about a deposit or mining district. The deposits chosen are almost all those in current...deposits of the Northampton district, the Mesabi Range, and the Itabira district. These thus cover a wide...deposition. Deposits described are the Luanshya copper district (Zambia), the Ambrosia Lake uranium field on the...the Tri-State district, the zinc, lead, and baryte deposits of the Silvermines district of Ireland, the...the zinc-lead deposits of the Pine Point district of the NorthWest Territories and the Sullivan orebody |  | | Journal (article/letter/editorial) | | tantalum-columbium, bismuth, molybdenum,corundum,mica,quartz (silica), and felspar, discussed later. as well...Struck", occur in a host rock setting consistingof quartz and felspar porphyritic volcanic rocks, all with...layeredultramaficcomplexes;(2) in places,with gold-quartz to be younger than the greenstonebelts but older...1 and 7). Here lenses and podsof kyaniteoccurin quartz-kyanite-sericite-Massivesulfideiron-jâąormations...rocks.The sequence alsocontains banded quartz-mica and quartz-chlorite schists(low to in- iron-formations |  | | Report (issue) | | the Foote Mineral Company developed an unzoned pegmatite ore body near Kings Mountain, North Carolina,...in the short term. The large zoned pegmatite at Bikita in Zimbabwe (Rhodesia) was a major source for the...outside of the United States includes the Bikita mine in Zimbabwe (Rhodesia), the Karibib-Omaruru area in...China (Singleton, 1979). The zoned pegmatite at Bikita is mined by Bikita Minerals, Ltd, a subsidiary of...Chemical Company have a partial interest in the Bikita property. Production from the main ore body included |  | | Journal (article/letter/editorial) | | EVOLUTION: EXAMPLE FROM THE VELASCO DISTRICT, PAMPEANA PEGMATITE PROVINCE, ARGENTINA, AND REVIEW OF WORLDWIDE...subtype pegmatites of the Velasco district from the Pampeana Pegmatite Province, Argentina, contain varieties...of beryl from ten pegmatites from the Velasco district were used to identify differences among beryl...Koktokay No. 3, Minas Gerais, Kaatiala, Namivo, Bikita, Czech Republic, and Greer Lake pegmatites. Keywords:...mineral chemistry, fractionation, Velasco District, Pampeana Pegmatite Province, Argentina. INTRODUCTION Beryl |  | | Journal (article/letter/editorial) | | Li-species that promote early saturation in mica I- quartz. Activities of F, P, and especially B are largely...generalized to be consistent with a single model of pegmatite evolution (e.g., JAHNS, 1982; BURNHAMand NEKVASIL...and adjacent pollucite bodies, where present; (2) Quartz-rich lithium aluminosilicate and amblygonitemontebrasite... units (Fig. 2); (3) Essentially monomineralic quartz bodies. (4) Albite- or F-rich mica bodies that...a geological cross section through the Tanco pegmatite, illustrates the complex and variable zonation |  | ÄernĂœ, Petr, Chapman, Ron, Ferreira, Karen, Smeds, Sten-Anders (2004) Geochemistry of oxide minerals of Nb, Ta, Sn, and Sb in the VarutrĂ€sk granitic pegmatite, Sweden: The case of an âanomalousâ columbite-tantalite trend. American Mineralogist, 89 (4) 505-518 doi:10.2138/am-2004-0405 | Journal (article/letter/editorial) | | Nb, Ta, Sn, and Sb in the VarutrĂ€sk granitic pegmatite, Sweden: The case of an âanomalousâ columbite-tantalite...ABSTRACT The complex, petalite-subtype VarutrĂ€sk pegmatite in the Proterozoic rocks of northern Sweden is...is, as a whole, rather poor in Nb and Ta. The pegmatite consolidated in eight units, but the (Nb,Ta)-oxide...abundance of native antimony and stibarsen in the pegmatite, and the absence of Bi-bearing minerals. Rare...cassiterite in the petalite-subtype VarutrĂ€sk pegmatite emphasizes the importance of specific conditions |  | Liu, Chen, Wang, Ru-Cheng, Wu, Fu-Yuan, Xie, Lei, Liu, Xiao-Chi, Li, Xing-Kui, Yang, Lei, Li, Xue-Jiao (2020) Spodumene pegmatites from the Pusila pluton in the higher Himalaya, South Tibet: Lithium mineralization in a highly fractionated leucogranite batholith. Lithos, 358. 105421 doi:10.1016/j.lithos.2020.105421 | Journal (article/letter/editorial) | | granite, albite granite, and pegmatites. Numerous pegmatite dikes have intruded the Higher Himalayan crystalline...highly fractionated pegmatites. The Chomogu No. 1 pegmatite is a well- zoned dike that hosts beryl, columbite...in the Himalayan leucogranite belt. Keywords : Pegmatite, Li mineralization, spodumene, columbiteâcassiterite...Wang et e- al., 2006; Zhang AC et al., 2004; Bikita in Africa, ÄernĂœ et al., 2003; Cooper, 1964; Pr...muscovite granite, albite granite, and granitic pegmatite, which progressively crop out with increasing |  | SĂĄnchez-Muñoz, Luis, Sanz, JesĂșs, Florian, Pierre, Diez-GĂłmez, Virginia, Furio, Marta, Sobrados, Isabel (2022) Order-Disorder in the Structures of Lithium Aluminosilicate Minerals by XRD and Multinuclear NMR. Minerals, 12 (4) 427 doi:10.3390/min12040427 | Journal (article/letter/editorial) | | high-pressure experiments. Solid solutions were found in α-quartz and α-cristobalite up to x â„ 0.75, and in ÎČ-eucryptite...creativecommons.org/licenses/by/ 4.0/). Keywords: quartz; cristobalite; α-spodumene; ÎČ-spodumene; α-eucryptite;...studied in this work are: α-cristobalite s.s.; α-quartz s.s.; ÎČ-eucryptite s.s. series (SiO2 -LiAlSiO4...available lattice models. The crystal structure of quartz SiO2 consists of a Q4 tectosilicate framework of...the c axis. Two phases are known as α-quartz P32 21 and ÎČ-quartz P62 22 or P64 22. Both crystal structures |  | Siegel, Karin, Wagner, Thomas, Trumbull, Robert B., Jonsson, Erik, Matalin, Gabriella, WĂ€lle, Markus, Heinrich, Christoph A. (2016) Stable isotope (B, H, O) and mineral-chemistry constraints on the magmatic to hydrothermal evolution of the VarutrĂ€sk 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 VarutrĂ€sk rare-element pegmatite (Northern Sweden) Karin Siegel a, Thomas Wagner...online 25 November 2015 Keywords: Rare-element pegmatite Boron isotopes Tourmaline SIMS Fluid exsolution...evolution of the VarutrĂ€sk rare-element pegmatite (Skellefte District, Northern Sweden) has been investigated...of tourmaline and coexisting micas, feldspar and quartz. VarutrĂ€sk is a classic and typical example of...border, wall and intermediate zones and a quartz core. The pegmatite displays considerable rare-element enrichment |  | | Journal (article/letter/editorial) | | di-trioctahedral chlorite cookeite in the presence of quartz, in the system L i 2 0 - A l z O 3 - S i O 2 -...thermal extent of the stability field of cookeite + quartz (260-480 ~ C) makes cookeite a valuable indicator...lawsonite, carpholite, chloritoid, pyrophyllite, quartz or diaspore (Goff6 1977, 1979, 1980, 1982, 1984;...related to magmatic systems, with rectorite and quartz (Miser and Milton 1964; Stone and Milton 1976)...pyrophyllite and diaspore (Loughnan and Steggles 1976), or quartz, cassiterite, fluorine and topaz (Ren et al. 1988) |  | | Report (issue) | | development, and long-range outlook of lithium-pegmatite ore in the Carolinas, by Thomas L. Kesler (retired)...comparison of three major lithium pegmatites: Varutrask, Bikita, and Bernic Lake, by E. Wm. Heinrich, University..._____________________ââ Internal structure of the Bikita, Rhodesia, pegmatite from hanging-wall downward to footwall...______________ââ Comparison of Varutrask, Bernic Lake, and Bikita pegmatites ____-____-__-_____-___________________...water. Commercial lithium is ob tained from pegmatite ore and specific brines in large but not unlimited |
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