 | Groat, L. A., Mulja, T., Mauthner, M. H.F., Ercit, T. S., Raudsepp, M., Gault, R. A., Rollo, H. A. (2003) GEOLOGY AND MINERALOGY OF THE LITTLE NAHANNI RARE-ELEMENT GRANITIC PEGMATITES, NORTHWEST TERRITORIES. The Canadian Mineralogist, 41 (1) 139-160 doi:10.2113/gscanmin.41.1.139 | Journal (article/letter/editorial) | | MINERALOGY OF THE LITTLE NAHANNI RARE-ELEMENT GRANITIC PEGMATITES, NORTHWEST TERRITORIES LEE A. GROAT§ Department...Columbia, Vancouver, British Columbia V6T 1Z4, Canada THOMAS MULJA¶ 3709 Rutherford Crescent, North...North Vancouver, British Columbia V7N 2C6, Canada MARK H.F. MAUTHNER‡ Department of Earth and Ocean Sciences...Columbia, Vancouver, British Columbia V6T 1Z4, Canada T. SCOTT ERCIT Research Division, Canadian Museum... Box 3443, Station D, Ottawa, Ontario K1A 0E8, Canada MATI RAUDSEPP Department of Earth and Ocean Sciences |  | | Journal (article/letter/editorial) | | ISOTOPIC STUDIES OF THE CRETACEOUS LITTLE NAHANNI PEGMATITE GROUP (NWT, CANADA) SUGGESTS MIXED FLUID RESERVOIRS...Sciences, Laurentian University, Sudbury, Ontario, Canada, LEE GROAT Department of Earth, Ocean and Atmospheric...British Columbia, Vancouver, British Columbia, Canada MOSTAFA FAYEK Department of Geological Sciences...Manitoba, Winnipeg, Manitoba, Canada Keywords: Little Nahanni Pegmatite Group, textures, stable isotopes...Situated in the Northwest Territories (Canada), the Cretaceous Little Nahanni Pegmatite Group (LNPG) is an |  | Cerny, P., Ercit, T. S., Smeds, S.-A., Groat, L. A., Chapman, R. (2007) ZIRCONIUM AND HAFNIUM IN MINERALS OF THE COLUMBITE AND WODGINITE GROUPS FROM GRANITIC PEGMATITES. The Canadian Mineralogist, 45 (2) 185-202 doi:10.2113/gscanmin.45.2.185 | Journal (article/letter/editorial) | | University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada T. Scott ERCIT Research Division, Canadian Museum...Museum of Nature, Ottawa, Ontario K1P 6P4, Canada Sten-Anders SMEDS Department of Earth Sciences, Uppsala...Columbia, Vancouver, British Columbia V6T 1Z4, Canada Ron CHAPMAN Department of Geological Sciences...University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada Abstract Niobium–tantalum-oxide minerals from...to 9.59 ZrO2 and 1.15 wt.% HfO2, and columbite-group minerals, up to 1.26 and 0.12 wt.%, respectively |  | | Journal (article/letter/editorial) | | element-bearing pegmatites from the Little Nahanni Pegmatite Group, NWT, Canada Elspeth M. Barnes a,⁎, Dominique... 6339 Stores Road,Vancouver, British Columbia, Canada, V6T 1Z4 University of British Columbia, 6339 Stores...Stores Road,Vancouver, British Columbia, Canada, V6T 1Z4 a r t i c l e i n f o Article history: Received...online 1 December 2011 Keywords: Pegmatite Little Nahanni Pegmatite Group Lithium Li isotopes Magmatic fractionation...c t Lithium isotope signatures of whole rock pegmatite samples and mineral separates from the rare elementbearing |  | | Journal (article/letter/editorial) | | ca. 1000 Ma. Keywords: granitic pegmatite, LCT pegmatite, NYF pegmatite, secular trends, supercontinent...et al. 1979, Tkachev 2011). Our tabulation of pegmatite ages builds on that of Tkachev (2011), but we...to the comprehensive book by London (2008). Pegmatite Geochronometers Although granitic pegmatites are...precise, accurate ages have proven elusive for many pegmatite occurrences, especially those in the LCT family...dating include zircon, the columbite-tantalite group, apatite, monazite, and uraninite. LCT pegmatites |  | Roda-Robles, Encarnación, Pesquera-Pérez, Alfonso, Simmons, William B., Gil-Crespo, Pedro Pablo, Falster, Alexander U. (2019) Evidence for internal fractionation from Li isotopes in tourmaline and mica in the Berry-Havey rare-element pegmatite (Maine, USA) The Canadian Mineralogist, 57 (5) 779-782 doi:10.3749/canmin.ab00020 | Journal (article/letter/editorial) | | TOURMALINE AND MICA IN THE BERRY-HAVEY RARE-ELEMENT PEGMATITE (MAINE, USA) ENCARNACIÓN RODA-ROBLES§ AND ALFONSO...tourmaline, mica, fractionation, Berry-Havey pegmatite. INTRODUCTION Lithium, the lightest alkali metal...al. 2016). Crystallization of H2O-rich granite-pegmatite systems at relatively low temperature has been...BerryHavey pegmatite (Maine, USA) is an excellent example of a zoned, highly evolved pegmatite, with continuous...of Li-bearing phases in the core zone of the pegmatite, where metersized lepidolite þ albite pods, hosting |  | | Report (issue) | | ..................... 24 Regional rare-metal pegmatite zoning and lithogeochemical anomalies ................................................... 25 Pegmatite dimensions and structure ................................................................. 43 Tungsten inert-gas welding ..............................International tantalum resources — exploration and mining Canada, Alaska, and Greenland ..................................................................... 63 Canada .............................................. |  | Smith, S. R., Foster, G. L., Romer, R. L., Tindle, A. G., Kelley, S. P., Noble, S. R., Horstwood, M., Breaks, F. W. (2004) U-Pb columbite-tantalite chronology of rare-element pegmatites using TIMS and Laser Ablation-Multi Collector-ICP-MS. Contributions to Mineralogy and Petrology, 147 (5) 549-564 doi:10.1007/s00410-003-0538-y | Journal (article/letter/editorial) | | Cs, Ta) pegmatites in the Superior Province of Canada. Conventional TIMS analyses of these columbite-tantalite...933 Ramsey Lake Road, Sudbury, Ontario, P3E 6B5, Canada G. L. Foster Department of Geology, Leicester University...Smith Geological Survey of Canada, 601 Booth St., Ottawa, Ontario, K1A 0E8, Canada fractionation between...Lake pegmatite, 2644±7 Ma for the Separation Rapids group, and 2665±8 Ma for the Mavis Lake group. The...and Mn for Fe during the crystallisation of a pegmatite magma (Cerný and Ercit 1985). The effect on the |  | 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 | | focused on a single mineral deposit or a limited group of deposits (sub-regional level), with regard to...limited. Cs resources can be categorised into one group of potassium salts, sedimentary rocks and seawater...resource group of commercial importance is LCT pegmatites that contain the rare zeolite group cesium mineral...LCT pegmatite deposits at Bikita in the Zimbabwe Craton and Tanco in the Superior Craton in Canada, where...occurs in monomineralic mineralisation. Both pegmatite deposits have a comparable regional geological |  | Xiang, Lu, Romer, Rolf L., Glodny, Johannes, Trumbull, Robert B., Wang, Rucheng (2020) Li and B isotopic fractionation at the magmatic-hydrothermal transition of highly evolved granites. Lithos, 376. 105753pp. doi:10.1016/j.lithos.2020.105753 | Journal (article/letter/editorial) | | associated cassiterite-tourmaline-quartz veins, and disseminated tourmaline-bearing cassiterite-sulfide ore...rock, magmatic and hydrothermal tourmalines show little variation in δ11B (−12.5 to −8.2‰), a signature...granitic pegmatite, δ11B of tourmaline decreases by ~6‰ from outer to inner zones of the pegmatite and from...overlain by sandy-pelitic rocks of the Danzhou Group (maximum depositional age ~ 800–750 Ma, Wang et...such as zircon, apatite, xenotime, rutile, and cassiterite. The central part consists of coarse-grained |  | Li, Jie, Huang, Xiao-Long, Wei, Gang-Jian, Liu, Ying, Ma, Jin-Long, Han, Li, He, Peng-Li (2018) Lithium isotope fractionation during magmatic differentiation and hydrothermal processes in rare-metal granites. Geochimica et Cosmochimica Acta, 240. 64-79 doi:10.1016/j.gca.2018.08.021 | Journal (article/letter/editorial) | | rare-metal granites that contain niobium-tantalum and tungsten deposits, respectively. As a moderately incompatible...mineralization in the rare-metal granitic rocks. Tungsten mineralization is likely associated with an open...phases of pegmatites (Magna et al., 2016). In a pegmatite, the late solidus to early subsolidus phases (e...of the Yashan Ta-Nb granite and the Xihuashan tungsten granite, with the aim to show the essence of the...traditionally divided into the Yangtze Block in the northwest and the Cathaysia Block in the southeast with |  | | Journal (article/letter/editorial) | | compositional gap between the host granite and the pegmatite. Lithium isotopic composition of muscovites and...zone of the internally zoned pegmatite and from the granite to the pegmatite for the un-zoned pegmatites...operating in tandem with vapour exsolution. Keywords Pegmatite · Rayleigh fractionation · Li isotope · Boron...refers to the appearance of chemically different pegmatite bodies with increasing distance from the granitic...(1982) and Černý (1991b) suggested that zoned pegmatite fields formed by continuous or episodic melt extraction |  | | Report (issue) | | Renfrew, Ontario, Canada; 7. Canada; 8. South Burgess, Lanark Co., Ontario, Canada 10. Snarum, Norway;...Kragero, Norway; 12. Eganville, Renfrew Co., Ontario, Canada; 13. (Phosphorite) Staffel, Limburg, Hesse-Nassau...Thousand Pound Crystals and Eighty Carat Gemstones-Canada is BIG! BY KIMBERLY TAIT AND MICHAEL BAINBRIDGE...town ofEhrenfriedersdorfin the Erzgebirge ("Ore Mountains") of southern Germany. The tin deposit in Ehrenfriedersdorf...and the name "apatite" came to describe a mineral group in which three mineral species share the same root |  | | Journal (article/letter/editorial) | | juvenile and specific components in the Habahe Group, which indicates the dependency of mineralization...mineralization on source from the heterogeneous Habahe Group metasedimentary The pegmatites also show decoupling...likely generated by anatexis of the lP Habahe Group metasedimentary rocks under an extensional setting...Keywords Jo ur Anatexis, rare metal, rare earth, pegmatite, Chinese Altai 1. Introduction Granitic pegmatites...et al., 2012a; London, 2018). In some cases, a pegmatite can be linked to its parental granite according |
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