 | | Journal (article/letter/editorial) | | listed in the table), the phosphates amblygonite-montebrasite and lithiophilitetriphylite, several species...Holmquistite Lepidolite Liddicoatite Lithiophilite Montebrasite Petalite Rossmanite Spodumene Triphylite Zinnwaldite...the direction of crystallization from massive pegmatite into the miarolitic cavity. (d) A lepidolite “skull”...(muscovite) and dark (biotite) micas of the outer pegmatite zones (e.g., Neiva 2014). That succession reflects...and feldspars that constitute the bulk of the pegmatite composition. In this way, the evolution of micas |  | | Journal (article/letter/editorial) | | Rhodesia and Uganda are members of the amblygonite-montebrasite series with a 1.5921.615, ~, 1.612-1.638, the...the highest values corresponding to montebrasite, Lil.9sAlz.oo (P1.950~.9o)(OH1.90F0.29); apatite with...Rhodesia, however, large-scale mining operations at Bikita for lithium minerals (Cooper, 1961 ; Wilson and...Amblyyonite-montebras~te. Small amounts of amblygonite-montebrasite are known in about a dozen pegmatites in Rhodesia...range in montebrasite (LiA1POaOH) content from 50 to 100 ~ In Rhodesia, amblygonite-montebrasite is accompanied |  | 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 | | Jörg Pfänder Archean Rare-Metal Pegmatites in Zimbabwe and Western Australia Geology and Metallogeny... • • • • 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) | | proportions of other phases in the chemically complex pegmatite system. Thus, the lithium aluminosilicate phase...this phase diagram for understanding lithium pegmatite petrogenesis prompted the experimental study that...Spodumene Nuristan. Afghanistan Eucryptite Zimbabwe Bikita. Petalite Minas Gerais, Brazil 149544 USNM...colorless natural minerals: eucryptite from Bikita, Zimbabwe; spodumene from Nuristan, Afghanistan; petalite...aluminosilicate phase probably depends more on depth of pegmatite emplacement than on differences in temperatures |  | | Journal (article/letter/editorial) | | generalized to be consistent with a single model of pegmatite evolution (e.g., JAHNS, 1982; BURNHAMand NEKVASIL...a geological cross section through the Tanco pegmatite, illustrates the complex and variable zonation...unique (cf pegmatite, Zimbabwe: COOPER,1964). Deposits such as Tanco and Bikita represent end states...commonly are distributed throughout an individual pegmatite (e.g., Fig. 1). Albitites, varying in texture...Western Australia: ELLIS, 1950; Bikita, Zimbabwe: COOPER, 1964; Karibib district, Zambia: ROERINGand GEVERS |  | 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...evolution of the Varuträsk rare-element pegmatite (Skellefte District, Northern Sweden) has been investigated...and intermediate zones and a quartz core. The pegmatite displays considerable rare-element enrichment...element variations in tourmaline from the main pegmatite zones correlate well with the internal zoning |  | 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) | | 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 |  | Černý, Petr, Chapman, Ron, Ferreira, Karen, Smeds, Sten-Anders (2004) Geochemistry of oxide minerals of Nb, Ta, Sn, and Sb in the Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” 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 Varuträsk granitic pegmatite, Sweden: The case of an “anomalous” columbite-tantalite...ABSTRACT The complex, petalite-subtype Varuträsk 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 Varuträsk pegmatite emphasizes the importance of specific conditions |  | | Journal (volume) | | . . .. ...... . ... . ..... . . . The parent pegmatite .... .. .... .. .......... ... ........ . ...... . . . ... ... . ..... . ...... . The parent pegmatite .. ... . . ......... .... . ...... .... . . ......... . .. . . ............ . . . The parent pegmatite ............... ...... . . ................ .... ....... ... . . ... .. . . . . . The parent pegmatite .............. . . .... ... . ..................ana1cime coexisting with pollucite at Luolamäki pegmatite, Finland and on this basis suggested immiscibility |  | 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 |  | Grew, Edward S., Hystad, Grete, Toapanta, Myriam P. C., Eleish, Ahmed, Ostroverkhova, Aleksandra, Golden, Joshua, Hazen, Robert M. (2019) Lithium mineral evolution and ecology: comparison with boron and beryllium. European Journal of Mineralogy, 31 (4) 755-774 doi:10.1127/ejm/2019/0031-2862 | Journal (article/letter/editorial) | | by U–Pb isotopes on associated minerals in the pegmatite; this represents half of the Li minerals occurring...considered unique, e.g., neptunite group, amblygonite-montebrasite, bertossite-palermoite, but not if the group...instead of discovery date. are amblygonite and montebrasite, which are uniformly ranked low. However, the...Elbaite Triphylite Amblygonite Lithiophorite Montebrasite Cookeite Lithiophilite Petalite Polylithionite...species, tancoite, found in the Archean Tanco pegmatite but nowhere else. Several minerals reported from |  | 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, columbite–cassiterite...Wang et e- al., 2006; Zhang AC et al., 2004; Bikita in Africa, Černý et al., 2003; Cooper, 1964; Pr...muscovite granite, albite granite, and granitic pegmatite, which progressively crop out with increasing |  | | Journal (article/letter/editorial) | | Available online 1 November 2013 Keywords: Granitic pegmatite Internal zonation Fractional crystallization Constitutional...in terms of the comprehensive petrogenesis of pegmatite bodies (pressure, temperature, and whole-rock...a summary of the current understanding of the pegmatite-forming environment, (3) the processes that determine...fundamental determinates of the internal evolution of pegmatite zones are: (1) the bulk composition of melt, (2)...Introduction . . . . . . . . . . . . . . . . . . . 1.1. Pegmatite families . . . . . . . . . . . . . 1.2. Internal |  | | Report (issue) | | Geology of the Hugo Pegmatite Keystone, South Dakota GEOLOGICAL SURVEY PROFESSIONAL PAPER 297-B Geology... Geology of the Hugo Pegmatite Keystone, South Dakota By J. J. NORTON, L. R. PAGE, and D. A. BROBST PEGMATITES...detailed structural and petrologic study of a pegmatite containing seven zones and two replacement bodies...Structure __________________________________________ Pegmatite units ____________________________________ Zone...Albite-quartz-musco vite pegmatite ________ Zone 2: Quartz-albite-muscovite pegmatite. _______ Zone 3: Pe |  | | 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..._____________________—— Internal structure of the Bikita, Rhodesia, pegmatite from hanging-wall downward to footwall...______________—— 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 |  | | Journal (issue) | | visited, but is located some 6 km north of the famous Bikita lithium mine about 80 km east of Fort Victoria...are located about 90 km eastward, near the Bikita pegmatite mine. Novello Prospect : T h e discovery of...faulting. Large lens-shaped bodies of quartz and pegmatite extend along the shear zones over a distance of...in an area of mica-rock intruded by numerous pegmatite stringers. Useful samples for study were recovered...minerals. Samples of mica-rock were found containing pegmatite stringers 2 to 3 em wide carrying quartz, mica |  | | Report (issue) | | at the regional Mines and Minerals office whose district includes the area covered by the report (see below)...purchased at Publication Sales and the office whose district includes the area covered by the report. Although...part), District of Sudbury G.W. Johns 7. Geological mapping west of Watabeag Lake, District of Cochrane...G.P. Beakhouse LITHOPROBE 16. Late-tectonic, pegmatite-aplite dike systems in the Archean crust between...Mack pegmatite system: a newly discovered western extension of the Separation Rapids pegmatite group |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Co., Bonanza mine, Trinity Co., Michigan Bluff district, Placer Co., in AK, placers at Fairbanks, Iditarod...and quartz veins at Juneau. In Canada, Noranda district, PQ; Porcupine, Kirkland Lake, and Larder Lake...deposits, ON; Atlin and Caribou, BC; and Klondike district, YT. In Mexico, Altar and Magdalena, SON; Parral...Ghana; Kilo and Moto, Zaire; Bulawayo and Hartley, Zimbabwe; Witwatersrand, South Africa, a belt of fossil...localities, AZ; Calico district, San Bernadino Co., Cerro Gordo(*), Inyo Co., Bodie district, Mono Co., and other |  | | Report (issue) | | WILSON,A.H. (1912): The geology of 1he 0... Dyke, Zimbabwe: The ultramafic rocks. J. Petrology23, 240-292...inclusions from topaz-quartzrocks from the ew England district of cw South Wales in Australia. Many of the Ml...with the re ults of Burnham (1978) using Harding Pegmatite as startingmaterial. Theoriginaldata are reported... R.J Bodnar and Minera/i;atio11 in the Bulle District,Mo111a11a Ph.D. thesis, Harvard Univ. Cambridge...volcanic :t11atijr..-., tourmaline-topaz aplite-pegmatite layered comgrades upward from andalusite-muscovite |
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