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| SURVEY NAMIBIA 1990 Open File Report MRS 12 2 Abstract Niobium-tantalum mineralisation in Namibia occurs...columbite-tantalite series are associated with rare metal pegmatites of early Namibian age (950-880 Ma) intrusive...Namaqualand Metamorphic Complex, and with rare metal pegmatites of late Namibian age (530-460 Ma) which are hosted...microlite and betafite) occur in late Pan African pegmatites or in association with Pan African and Mesozoic...h rare metal pegmatites, or as by-products of Tin-mining operations in central Namibia (Uis, Nainais |
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| AiAiba / farm Anibib 136 8 Grosse Spitzkoppe, Erongo 9 , .,/, loringa tree . Khomas Highland...station Garub near Aus Nature conservation, Erongo 16 Welwitschia, Goboboseb Mountains 17 ....Northwest Region including Damaraland The Central Namib Desertand Escarpment The Spitzkoppen The Erongo Mountains...The Central Escarpment- The Nauchas-Gamsberg-Hakos Area West and South of Rehoboth The Central and South-CentralDeposits...Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and the Diamonds 44 49 241 254 272 275 |
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| geochemical variations in pegmatites of the cape cross-uis pegmatite belt, namibia Warrick C. Fuchsloch...geochemical variations in pegmatites of the cape crossuis pegmatite belt, namibia. The address for the corresponding...GEOCHEMICAL VARIATIONS IN PEGMATITES OF THE CAPE CROSS-UIS PEGMATITE BELT, NAMIBIA Warrick C. Fuchslocha*...words: Granitic pegmatite, Pegmatite classification, Namibia, Damara Orogen, Pegmatite geochemistry, Anatexis...African aged Damara Orogen in Namibia is host to the Cape Cross-Uis pegmatite SC belt, one of several NE-trending |
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| REPUBLIC OF NAMIBIA - MINISTRY OF MINES AND ENERGY GEOLOGICAL SURVEY THE MINERAL RESOURCES OF NAMIBIA FIRST...ENERGY Of the several hundred minerals present in Namibia, around sixty have been exploited. some, such as...base metals and industrial minerals have helped Namibia rank amongst the top five mining countries in Africa...terms of production and reserves. In this context, Namibia is a major producer of copper, lead, zinc, cadmium...unpublished. It is evident that mineral exploration in Namibia, as elsewhere. has changed from serendipitous discoveries |
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| of Nb-Ta-Sn oxides from pegmatites of the Cape CrossâUis pegmatite belt, Namibia WARRICK C. FUCHSLOCH*...com Abstract The Cape Cross-Uis pegmatite belt, Damara Orogen, north-central Namibia hosts multiple Ta-Nb-...Ta-Nb- and Sn-oxide-bearing pegmatites. Columbite-group minerals, tapiolite, cassiterite and minor ixiolite...ixiolite and wodginite occur in abundance within pegmatites and display various compositional and internal...trends in beryl to spodumene type rare-element pegmatites. In addition, these trends suggest that co-crystallizing |
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| fluorine-rich aplite, together with associated pegmatite veinlets and lenses, is of considerable geochemical... dated microlite, observed in the aplite and pegmatite veinlets. In the course of the study some of the...due to accumulation of coarser minerals, such as apatite, tourmaline, lithian mica, or fluorite, especially...accessory elbaite tourmaline, topaz, apatite, fluorite, and occasionally petalite. There are also smaller amounts...consists of albite and quartz with minor amounts of apatite, tourmaline, orthoclase, and colourless lithian |
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| chemistry from rare-element granitic pegmatites: Separation Lake area, N.W. Ontario, Canada A. G. Tindle1...Summary The Separation Lake area is host to the most important rare-element pegmatites in Ontario, Canada. They...They include the Big Whopper and Big Mack petalite pegmatite systems which potentially represent the world's...second largest lithium deposit of this type. The pegmatites occur in two distinct clusters adjacent to the...Beryl-type and complex-, petalite-subtype pegmatites are the most common and a few pegmatites have characteristics |
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| LamujĂ€rvi, and Iivaara), rapakivi granite and pegmatite (Kovela), and kaolin-bearing weathering crusts...in late magmatic carbonatite veins in the fenite area of the Sokli carbonatite complex. Detailed mineralogical...Koivusaarenneva ilmenite gabbro intrusion and KauhajĂ€rvi apatiteâilmeniteâmagnetite gabbro complex. Possible Ti...vanadium mine. For several years, Rare Element (RE)-pegmatite of the Kaustinen and SomeroâTammela areas has...(GTK). At Kaustinen, Li-pegmatite occurs as subparallel dyke swarms in an area of 500 km2 within Paleoproterozoic |
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| GEOLOGIQUE OE FINLANOE N:o 206 ON THE PEGMATITES IN THE TORRO AREA. SOUTHWESTERN FINLAND BY ERKKI AUROLA.... 14 PEGMATITE OCCURRENCES . .. .. . ............................. . .... 16 PEGMATITES ASSOCIATED...18 THE PEGMATITE OCCURRENCE OF LUOLAMĂKI . . . . . . . . . . . . . . . . . . . 19 PEGMATITE OCCURENCES...BELT . âą . . . . . . . . . . . . . . . . THE PEGMATITES OF THE MICROCLINE GRANITES. . . . . . . . . ... 21 22 THE ORIGIN OF THE COMPLEX AND SIMPLE PEGMATITES ...... . 24 ACKNOWLEDGMENTS .... ......... |
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| manganotantalite crystals from Moolyella, Pilbara region. Simpson Collection, Western Australian Museum........................ 15 Granitic rare-metal pegmatites .............................................................................. 17 Spodumene, petalite, and amblygonite subtypes ......................Regional controls affecting the distribution of pegmatites .................................................................... 24 Regional rare-metal pegmatite zoning and lithogeochemical anomalies ....... |
 | 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 NbâTa OXIDES IN Li-BEARING PEGMATITES FROM THE BARROSOâALVĂO PEGMATITE FIELD, NORTHERN PORTUGAL TĂąnia...Portugal Abstract The BarrosoâAlvĂŁo 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...LCT (LiâCsâTa) pegmatites from BarrosoâAlvĂŁo: spodumene pegmatites, petalite pegmatites, and lepidolite |
 | 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) |
| columbite-tantalite chronology of rare-element pegmatites using TIMS and Laser Ablation-Multi Collector-ICP-MS...from three suites of rareelement (Li, Cs, Ta) pegmatites in the Superior Province of Canada. Conventional...columbite from pegmatites in the Superior Province are; 2670±5 Ma for the Pakeagama Lake pegmatite, 2644±7 Ma... The ages broadly show that the rare-element pegmatites are temporally synchronous with adjacent peraluminous...emplacement age of economically important rare-element pegmatites. Romer and Wright (1992) have shown that columbite-tantalite |
 | 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) |
| Journal Pre-proof Spodumene pegmatites from the Pusila pluton in the higher Himalaya, South Tibet: Lithium...Liu, R.-C. Wang, F.-Y. Wu, et al., Spodumene pegmatites from the Pusila pluton in the higher Himalaya...Published by Elsevier. Journal Pre-proof Spodumene pegmatites from the Pusila pluton in the Higher Himalaya...muscovite granite, albite granite, and pegmatites. Numerous pegmatite dikes have intruded the Higher Himalayan...sequence oo f and the granites. Oligocene pegmatites in the Chomogu and Cuore areas, which we constrain |
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| http://www.tandfonline.com/loi/tigr20 Rare-Metal Pegmatites from the Southeastern Desert, Egypt: Geology...this article: Gehad M. Saleh (2007) Rare-Metal Pegmatites from the Southeastern Desert, Egypt: Geology...& Son, Inc. All rights reserved. Rare-Metal Pegmatites from the Southeastern Desert, Egypt: Geology...Box 530, El-Maadi, Cairo, Egypt Abstract The pegmatite province of the Southeastern Desert (SED) is part...the Red Sea (and covers an area of approximatly 120 km2). Rare-metal pegmatites within the SED are divided |
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| pp. 753-788 (2002) TOURMALINE IN PETALITE-SUBTYPE GRANITIC PEGMATITES: EVIDENCE OF FRACTIONATION AND CONTAMINATION... Canada ABSTRACT Tourmaline in petalite-subtype granitic pegmatites from the Pakeagama Lake and Separation...compositional evolution of pegmatite-forming melts through magmatic crystallization and pegmatite melt â host-rock... At the former locality, tourmaline from the pegmatite units is essentially magmatic, whereas at the...locality, tourmaline in many of the Fe-suite pegmatites displays characteristics (such as elevated Mg |
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| and Minerals office whose district includes the area covered by the report (see below). Copies can be...Sales and the office whose district includes the area covered by the report. Although a particular report...Abitibi greenstone belt in the TimminsâKirkland Lake area: revisions to stratigraphy and new geochronological... Reappraisal of the geology of the Shining Tree area (west part), District of Sudbury G.W. Johns 7....Township area C.T. Barrie The KiddâMunro Extension Project: geology of the Munro North area C.T. Barrie |
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| sedimentary, and metamorphic) and structures. Cross sections and images illustrate the common ore types... separated from the text but supplemented with cross-references to the columns and lines, where they...considered as an area of scientiïŹc research of black and white smokers, rather than an area of exploration...with other commodities will enter a new frontier area through the metal's or mineral's doors rather than...Anothoclase Anthophyllite Antimonselite Antimony native Apatite Apophyllite Aragonite Ardennite Arfvedsonite Argentite |
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| sedimentary, and metamorphic) and structures. Cross sections and images illustrate the common ore types... separated from the text but supplemented with cross-references to the columns and lines, where they...considered as an area of scientiïŹc research of black and white smokers, rather than an area of exploration...with other commodities will enter a new frontier area through the metal's or mineral's doors rather than...Anothoclase Anthophyllite Antimonselite Antimony native Apatite Apophyllite Aragonite Ardennite Arfvedsonite Argentite |
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| The HagendorfPleystein Province: the Center of Pegmatites in an Ensialic Orogen Modern Approaches in...The Hagendorf-Pleystein Province: the Center of Pegmatites in an Ensialic Orogen Harald G. Dill Gottf...the same passion for minerals and the NE Bavarian region. The Oberpfalz was his home and my adopted country...extracted from pegmatites is feldspar, quartz and mica, and only a tiny fraction of pegmatites contains rare...so as to render mining of these rare-element pegmatites feasible. The traditional mining of pegmatitic |
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| volume). ii List of Figures Figure 1 Geological cross section through the Sarobay Muscovite Deposit (after...Filippov, 1974). Figure 2 Geological sketch map and cross section through the Jamanak Lithium Deposit (after...central segment of the Parun Field of Rare-Metal Pegmatites (after. G.K. Eriomenko and L.N. Rossovskiy, 1974)...1974). Figure 4 Geological sketch map and cross section through the Khanneshin Carbonatite Volcano (after... Kirichek, 1974). Figure 6 Geological map and cross section through the central and northern segments |
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| GROUP.231 Nepheline, Kalsilite ....... 231 PETALITE.271 LEUCITE.276 SODALITE GROUP.289 Sodalite, Nosean...the most important constituents of the simple pegmatites and are common in mineral veins. They are major...which atoms are labelled only within the unique area, and Fig. 5a shows part of the structure as viewed...Plate 1. In black: schematic illustration of the cross linkage of the felspar âchainsâ to form a âsheetâ...twinning, and most often shows both, in the well-known cross-hatched or âtartan â pattern. The peculiar relations |
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| responsible for optical effects are described. As yet the region has not yielded a corundum crystal large enough...and the mantle. Figure 1 depicts a longitudinal cross section of an adult mollusc. The centre consists...plant matter or dead animals can penetrate this region (Gubelin, 1987) unless forced by some external...(connective tissue) Endoderm Fig. 1. A longitudinal cross section of an adult mollusc. âą âą 11111 âąHi WKM...intruded sand grain which somehow had penetrated the region between the shell and the shellbuilding ectoderm |
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| Striations and Glacier Movements in the Tampere Region, Southern Finland .. . .. . . . . .. . . .. .....that of guanajuatite. OCCURRENCE The OrijÀrvi region belongs to the Svecofennian schist zone and is...reflections in joseite, especially in the back-reflection area, which are missing in laitakarite and vice versa...an average of reflections in the back reflection area. 2 e was between 127.4° -158.6° and a o turned out...PENTTI (1914) On the petrology of the OrijÀrvi region in Southwestern Finland. Bull. Comm. geol. Finlande |
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| Striations and Glacier Movements in the Tampere Region, Southern Finland .. . .. . . . . .. . . .. .....that of guanajuatite. OCCURRENCE The OrijÀrvi region belongs to the Svecofennian schist zone and is...reflections in joseite, especially in the back-reflection area, which are missing in laitakarite and vice versa...an average of reflections in the back reflection area. 2 e was between 127.4° -158.6° and a o turned out...PENTTI (1914) On the petrology of the OrijÀrvi region in Southwestern Finland. Bull. Comm. geol. Finlande |
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| mining in Finland started in the 1530s when the area formed part of Sweden. The post of commissioner...supply iron works. Deposits found in the PitkĂ€ranta area were mined for copper, tin, zinc, and iron. The...iron deposits in Lapland, as well as the large apatite-rich Sokli carbonatite complex. Rautaruukki Oy...earlier mining attempts were found in the PitkĂ€ranta area by Russian mining officer Anton Furman on the northeastern... The geology and ore deposits of the PitkĂ€ranta area were studied in detail by TrĂŒstedt (1907) (see Chapter |
