 | Sirbescu, M.-L. C., Leatherman, M. A., Student, J. J., Beehr, A. R. (2009) APATITE TEXTURES AND COMPOSITIONS AS RECORDS OF CRYSTALLIZATION PROCESSES IN THE ANIMIKIE RED ACE PEGMATITE DIKE, WISCONSIN, USA. The Canadian Mineralogist, 47 (4) 725-743 doi:10.3749/canmin.47.4.725 | Journal (article/letter/editorial) | | CRYSTALLIZATION PROCESSES IN THE ANIMIKIE RED ACE PEGMATITE DIKE, WISCONSIN, USA Mona-Liza C. SIRBESCU§, Mark...314 Brooks Hall, Mount Pleasant, Michigan 48859, USA Alison R. BEEHR Department of Earth and Planetary...63130-4862, USA Abstract Unidirectional and skeletal textures in the thin inward-crystallizing Animikie Red...Red Ace (ARA) pegmatite dike, in northeastern Wisconsin, suggest rapid, disequilibrium crystallization of...of the outer zones as the pegmatite-forming magma came in contact with much cooler country-rocks. The |  | | Journal (article/letter/editorial) | | crystallization of the Animikie Red Ace Pegmatite, Florence county, northeastern Wisconsin: inclusion microthermometry...evaluated the crystallization regime of a zoned pegmatite dike and the degree of magma undercooling at the...assemblages. The liquidus temperature of the pegmatite magma was *720°C, based on re-melting of crystallized-melt...exsolved from hotter, still crystallizing inner pegmatite units. The huge temperature contrast between the...inclusion assemblages Microthermometry LCT pegmatite Numerical simulation Undercooling Communicated |  | | Journal (article/letter/editorial) | | Harrisonburg, VA 22801. Microcline feldspar in pegmatites often displays a blue-green color and is given...lead. Sixty-four samples from nine worldwide pegmatite localities were quantitatively analyzed to compare...Florissant, Colorado; the Zapot pegmatite, Mineral County, Nevada; Carroll County, New Hampshire; the Morefield...ROCKS & MINERALS matites of Amelia County, Virginia; Wisconsin; Tordal, Norway; Russia; and Matawatawa...correlation. Three samples of amazonite from Amelia County, Virginia, repeatedly showed Pb concentration below |  | | Report (issue) | | 05 ]Σ=0.98 . (2) Little Three mine, California, USA; corresponds to Be2.00 B1.00 O3 [(OH)0.70 F0.30 ]Σ=1...mineral in granite pegmatites. Association: Beryl, danburite, apatite, spodumene, zircon, fluorite, feldspar...Bity; and large crystals from Anjanabanoana. In the USA, fine crystals from the Little Three mine, near Ramona...Co., California; large crystals from the Zapot pegmatite, 25 km northeast of Hawthorne, Mineral Co., Nevada;...Nevada; at the Animikie Red Ace pegmatite, near Pine River, Florence Co., Wisconsin. In Pakistan, around |  | | Journal (article/letter/editorial) | | as an essential element are found in granitic pegmatites and alkalic rocks or in hydrothermal deposits...geologic record: the oldest known is beryl in pegmatites associated with the Sinceni pluton, Swaziland...with highly fractionated rare-element granitic pegmatites and with skarns at Långban and similar deposits...Ma, which is largely attributable to granitic pegmatites (Appalachian Mountains, U.S.A., and Urals, Russia)...Mineral age, beryllium, mineral evolution, granitic pegmatites, peralkaline complexes, supercontinent cycle |  | | Journal (article/letter/editorial) | | Sciences University of Wisconsin-River Falls 410 South Third Street River Falls, Wisconsin 54022 his is Wisconsin’s... breweries, bratwurst, and Packers football, Wisconsin also has a diverse geology and a history rich...forgotten, abandoned, and overgrown. In this respect, Wisconsin represents a frontier state for the mineral collector...quarry in Racine (Scovil 1994), the pegmatites of Florence County (Koehier 1989) and the Wausau area (Falster...summarizes and highlights what has been found in Wisconsin in the past 150 years and points the way to new |  | Bradley, Dwight, Shea, Erin, Buchwaldt, Robert, Bowring, Sam, Benowitz, Jeff, O'Sullivan, Paul, McCauley, Andrew (2016) Geochronology and Tectonic Context of Lithium-Cesium-Tantalum Pegmatites In the Appalachians. The Canadian Mineralogist, 54 (4) 945-969 doi:10.3749/canmin.1600035 | Journal (article/letter/editorial) | | AND TECTONIC CONTEXT OF LITHIUM-CESIUM-TANTALUM PEGMATITES IN THE APPALACHIANS DWIGHT BRADLEY§,* U.S. Geological...99775 U.S.A. PAUL O’SULLIVAN GeoSep Services, 1521 Pine Cone Road, Moscow, Idaho 83843, U.S.A. ANDREW MCCAULEY...lum (LCT) and niobium-yttrium-fluorine (NYF) pegmatites occur at intervals along the Appalachian orogen...from Alabama to Nova Scotia. We report new U-Pb zircon (CA-TIMS), 40Ar/39Ar muscovite, U-Pb apatite (LA-ICP-MS)...(LA-ICP-MS), and apatite fission track ages for 14 pegmatites. Based mostly on these new results, we recognize |  | | Journal (article/letter/editorial) | | 165 THE LATE-STAGE MINIFLOOD OF Ca IN GRANITIC PEGMATITES: AN OPEN-SYSTEM ACID-REFLUX MODEL INVOLVING PLAGIOCLASE...Abstract As Richard H. Jahns used to say, granitic pegmatites are prone to stew in their own juice. The early...country rock, mostly from the apical parts of zoned pegmatites. There, it interacts with plagioclase in any...envision a convecting fluid phase cycling around the pegmatite body, and a reaction path that brings the acidified...acidified fluid back into the heart of the pegmatite. There, it is aggressive toward the microcline perthite |  | 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) | | Jeffrey Scovil photo. July/August: Calcite, Gallatin County, Mon tana. American Museum of Natural Histo ry...September/October: Chalcocite, Flambeau mine, Ladysmith, Rusk County, Wiscon sin. F. John Barlow specimen, Malcolm...November/December: Chalcocite, Bristol, Hartford County, Connecticut. Jim Minette specimen, Jeffrey Scovil...Springs, 154-70 Arsenopyrite, Connecticut, 128; Wisconsin, 338 Art, see Robinson, S. Ayers, J . M., see...Contributed Papers in Specimen Mineralogy Azurite, Wisconsin, 338 Babcock, L . E . , see Media Reviews Babingtonite |  | Novák, Milan, Cempírek, Jan, Gadas, Petr, Škoda, Radek, Vašinová Galiová, Michaela, Pezzotta, Federico, Groat, Lee A. (2015) Boralsilite and Li, Be-bearing "Boron Mullite" Al8B2Si2O19, Breakdown products of spodumene from the Manjaka pegmatite, Sahatany valley, Madagascar. The Canadian Mineralogist, 53 (2) 357-374 doi:10.3749/canmin.1400092 | Journal (article/letter/editorial) | | BREAKDOWN PRODUCTS OF SPODUMENE FROM THE MANJAKA PEGMATITE, SAHATANY VALLEY, MADAGASCAR MILAN NOVÁK§ Department...elbaite-subtype Manjaka granitic pegmatite, Sahatany Valley, Madagascar. The pegmatite mineral assemblage is relatively...> Ap + several accessory B-rich phases). This pegmatite forms an E–W-trending elongated body emplaced...emplaced in an Mg-rich calc-silicate rock; the pegmatite exocontact locally contains thin reaction zones (Tur+Phl±Brl)...minor extent of exocontact reactions along the pegmatite, and secondary rhodochrosite, are responsible |  | | Journal (article/letter/editorial) | | minerals and cassiterite from the Black Mountain pegmatite, Maine MICHAEL A. WISE* and CATHLEEN D. BROWN...Smithsonian Institution, Washington, DC, 20560, USA *Corresponding author, e-mail: wisem@si.edu Abstract:...Ta-,Sn-oxide minerals from the Black Mountain pegmatite has revealed the presence of discrete crystals...fractionation as commonly observed in F-enriched granitic pegmatites. Micrograins of CGM typically show higher Ta/(Ta...Key-words: cassiterite, columbite-group minerals, pegmatite, Black Mountain, Maine. 1. Introduction and |  | | Journal (article/letter/editorial) | | phosphate mineralization in the Hagendorf-Pleystein pegmatite province H. G. DILL1,*, B. WEBER2, A. GERDES3...Silbergrube Aplite (SA) in the Hagendorf-Pleystein Pegmatite District, near Waidhaus, Germany, is a mildly...(stage I). The age of formation of the Hagendorf pegmatites seemingly post-dates the emplacement of the SA...operating feldspar mine in the Hagendorf-Pleystein Pegmatite Mining * E-mail: dill@bgr.de DOI: 10.1180/minmag...Germany. The Hagendorf pegmatite is one of the biggest feldspar-quartz pegmatite deposits in Europe, and |  | Martins, T., Lima, A., Simmons, W. B., Falster, A. U., Noronha, F. (2011) GEOCHEMICAL FRACTIONATION OF Nb-Ta OXIDES IN Li-BEARING PEGMATITES FROM THE BARROSO-ALVAO PEGMATITE FIELD, NORTHERN PORTUGAL. The Canadian Mineralogist, 49 (3) 777-791 doi:10.3749/canmin.49.3.777 | Journal (article/letter/editorial) | | OF Nb–Ta OXIDES IN Li-BEARING PEGMATITES FROM THE BARROSO–ALVÃO PEGMATITE FIELD, NORTHERN PORTUGAL Tânia...University of New Orleans, New Orleans, Louisiana 70148, USA Fernando NORONHA Geology Centre, and Department...Portugal Abstract The Barroso–Alvão granitic pegmatite field, located in northern Portugal, is known...Li-bearing pegmatites, especially spodumene- and petalite-bearing bodies. Recent work on this pegmatite field...field characterized other types of pegmatites, and complex mineralization and mineral associations. Minerals |  | Morrissey, L. J., Hand, M., Raimondo, T., Kelsey, D. E. (2014) Long-lived high-T, low-Pgranulite facies metamorphism in the Arunta Region, central Australia. Journal of Metamorphic Geology, 32 (1) 25-47 doi:10.1111/jmg.12056 | Journal (article/letter/editorial) | | and leucosomes span the interval 1576–1542 Ma. Pegmatites that overprint the regional gneissic fabric and...magmatism or extension is absent (Fig. 2). Existing zircon and monazite U–Pb isotopic age data from the Reynolds...differences between U–Pb metamorphic ages from zircon and monazite from different rocks (Williams et...et al., 1996; Rubatto et al., 2001). U–Pb zircon ages range from 1594 ± 6 Ma in granulite facies metapelites...from locations north and south of Mount Boothby. Pegmatites that cross-cut the regional gneissic fabric were |  | | Journal (article/letter/editorial) | | for lithium‑aluminosilicate supersaturation of pegmatite‑forming melts Victoria Maneta1 · Don R. Baker1...reveal evidence for lithium supersaturation of pegmatite-forming melts before the formation of Li-aluminosilicates...spodumene-rich Moblan pegmatite (Quebec) is consistent with extreme Li enrichment of the pegmatite-forming melt...such Li-rich ore resources. Keywords Granitic pegmatites · Lithium · Supersaturation · Moblan · Spodumene...Street, Montreal, QC H3A 0E8, Canada Introduction Pegmatites currently account for 38 % of the known global |  | | Journal (article/letter/editorial) | | Scandium-bearing minerals from the Heftetjern-pegmatite, Tørdal, south Norway Roy Kristiansen At the...type locality at Heftet jern in Tørdal, in the county of Telemark, Norway. New data of Scandium-minerals...the mineral is reported mostly from granitic pegmatites, but also from carbonatites, greenstone, volcaniclastic...grey Sc-AI-silicate from the Animikie Red Ace pegmatite in Wisconsin,USA, by Falster et al. (1996); 3)...complete description of the mineralogy of the pegmatite is not provided except for an updated list of |  | Zhou, Qifeng, Qin, Kezhang, Tang, Dongmei, Tian, Ye, Cao, Mingjian, Wang, Chunlong (2015) Formation Age and Evolution Time Span of the Koktokay No. 3 Pegmatite, Altai, NW China: Evidence from U-Pb Zircon and40Ar-39Ar Muscovite Ages. Resource Geology, 65 (3) 210-231 doi:10.1111/rge.12067 | Journal (article/letter/editorial) | | Span of the Koktokay No. 3 Pegmatite, Altai, NW China: Evidence from U–Pb Zircon and 40Ar–39Ar Muscovite...Beijing, China 2 Abstract The Koktokay No. 3 pegmatite is the largest Li–Be–Nb–Ta–Cs pegmatitic rare-metal...results of LA-ICP–MS zircon U–Pb dating and muscovite 40Ar–39Ar dating. Four groups of zircon U–Pb ages (∼210...mineralization peak, hydrothermal stage of the No. 3 pegmatite are in ranges of 193–198 Ma, 184–187 Ma and 172–175...Ma and 173.1 ± 3.9 Ma, respectively. The No. 3 pegmatite formed in the early Jurassic. The results of xenocrysts |  | | Journal (issue) | | Norway 8th International Symposium on Granitic Pegmatites Pre-conference excursion Tysfjord-Hamarøy PEG2017...PEG2017 8th International Symposium on Granitic Pegmatites Pre-conference excursion - Tysfjord-Hamarøy...in southwestern Fennoscandia: Backdrop to the pegmatite fields of southern Norway……………………………………………………………………………………...REE) concentration in rare-element granites and pegmatites from Russia………………………………………………………………..4 BARROS...MENUGE, J.F., ZACK, T. Rb-Sr studies of spodumene pegmatites and associated rocks in Leinster, Ireland…………………8 |  | | Report (issue) | | International, LLC P.O. Box 263, East Hampton, CT 06424, USA Phone 1.860.267.1512; fax 1.860.267.7225 www.lapisint...CHRISTIAN WEISE VERLAG, GERMANY AND LAPIS INTERNATIONAL, USA Tourmaline ♦ History ♦ Mineralogy • Tourmaline...is adorned at its center with a large, polished, red tourmaline. The crown is housed at the Hradschin...Tourmaline . . ......... 68 Maximilian Glas • Pegmatites - An Overview .............70 William B. Simmons...pearls. The large (39.5 x 36.5 x 14 mm), bright red stone in the center of the front of the crown was |  | | Journal (article/letter/editorial) | | AN LCT-SUITE PEGMATITE WITH LATE-STAGE SODIUM ENRICHMENT, BRAZIL LAKE, YARMOUTH COUNTY, NOVA SCOTIA....Brazil Lake granitic pegmatite, a rare occurrence of an LCT-type (Li–Cs–Ta) pegmatite in the Meguma Terrane...Group. Previous mineralogical studies showed the pegmatite formed in two distinct stages, an early spodumene...tourmaline) provide insight into the origin of the pegmatite-forming melt and its subsequent internal evolution...metasedimentary source and suggest, instead, that the pegmatite-forming melt originated via partial melting of |  | Černý, P., Teertstra, D. K., Chapman, R., Selway, J. B., Hawthorne, F. C., Ferreira, K., Chackowsky, L. E., Wang, X.-J., Meintzer, R. E. (2012) Extreme fractionation and deformation of the leucogranite-pegmatite suite at Red Cross Lake, Manitoba, Canada. IV. Mineralogy. The Canadian Mineralogist, 50 (6) 1839-1875 doi:10.3749/canmin.50.6.1839 | Journal (article/letter/editorial) | | FRACTIONATION AND DEFORMATION OF THE LEUCOGRANITE – PEGMATITE SUITE AT RED CROSS LAKE, MANITOBA, CANADA. IV. MINERALOGY...pegmatitic leucogranites and pegmatites populate the Red Cross Lake pegmatite field, located in a greenstone...Canadian Shield. Most of the leucogranites and pegmatites are geochemically rather primitive, but one of...lithiumenriched, and the most evolved lepidolite-rich pegmatites represent the most fractionated products of granitic...differentiation known to date. The lepidolite pegmatites consist mainly of albite, quartz and muscovite |  | | Journal (article/letter/editorial) | | petrologic assessment of internal zonation in granitic pegmatites David London ConocoPhillips School of Geology...Geophysics, University of Oklahoma, Norman, OK 73019, USA a r t i c l e i n f o Article history: Received...Available online 1 November 2013 Keywords: Granitic pegmatite Internal zonation Fractional crystallization Constitutional...zonation within granitic pegmatites that are in use today. Zonation in pegmatites is manifested both in...is a conspicuous and distinctive attribute of pegmatites, there has been no thorough effort to explain |  | | Journal (article/letter/editorial) | | evolution of fluids in rare-element granitic pegmatites associated with the Lacorne pluton, Québec, Canada...evolution of fluids in rare-element granitic pegmatites associated with the Lacorne pluton, Québec, Canada...EVOLUTION OF FLUIDS IN RARE-ELEMENT GRANITIC PEGMATITES ASSOCIATED WITH THE LACORNE PLUTON, QUÉBEC, CANADA...Co-magmatic rare-element (Be, Li, Nb, Ta) granitic pegmatites associated with the Lacorne monzogranite pluton...immediately after the formation of aplite in the beryl pegmatite, and pene-contemporaneously US with formation |  | | Journal (article/letter/editorial) | | less-depleted LREE-Sr fraction melts, once monazite and zircon (and xenotime) would have crystallized. Type 3.... The high-U content of monazite, xenotime and zircon and a complex accessory mineral association of...contents (Merino et al. 2013; Pérez-Soba et al. 2014). Zircon from the Belvís pluton gave an accurate emplacement...inclusion free, with the exception of some occasional zircon crystals. Type 3 apatite appears only in the most...metal-rich highly fractionated granites and LCT pegmatites (e.g., 7404 ppm, Raimbault and Burnol 1998; ca |
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