 | | Journal (article/letter/editorial) | | 277 Pandaite from the Mrima Hill niobium deposit (Kenya) By P. M. HARRIS, B.A. Warren Spring Laboratory...barium pyrochlore (pandaite) has been found at Mrima Hill (Kenya) in a residuum consisting mainly of goethite/limonite...physical, chemical, X-ray, and thermal properties the Mrima pandaite is similar to pandaites described from...niobium in the weathered residuum of the Mrima Hill (Kenya) carbonatite in association with Overseas...several samples t h a t had been collected b y the Kenya Mines and Geological Department. As a result it |  | | Report (issue) | | IRELAND ISRAEL ITALY JAMAICA JAPAN JORDAN KAZAKHSTAN KENYA KOREA, REPUBLIC OF KUWAIT KYRGYZSTAN LAO PEOPLEāS...China (2), Egypt, Ghana, Islamic Republic of Iran, Kenya, Madagascar, Mongolia, the Philippines, Ukraine...FROM SELECTED ALKALINE CARBONATITE COMPLEXES OF KENYA ..................................................characterizing and evaluating national uranium resources; Kenya focused on development of analytical techniques;...INVESTIGATORS FOR CRP IAEA Institute Member State City Kenya University of Nairobi Nairobi Title Multimodal |  | | Book (edition) | | localities as inclusions in the limestoneāā (italics mine). Actually, the first published description of...most of the field work on the Iron Hill complex of Gunnison County, Colorado, in 1912-1913. Although his...accepted the idea of an igneous origin for the Iron Hill carbonatite. In 1924 Bowen, who had visited the...carbonatite dikes cutting the kimberlite of the Premier mine (p. 542) he classed as magmatic, but 1 Bowen admitted...Cove, Arkansas (Erickson and Blade, 1963), Iron Hill, Colorado (Olson and Wallace, 1956), Mountain Pass |  | | Journal (article/letter/editorial) | | References BAKER (B. H.), 1954. Rept. Geol. Surv. Kenya, no. 27. BO~LEu (G. D.), 1963. Min. Mag., vol. 33...small crystals of aegirine, and accessory apatite, zircon, and iron ore. Scattered irregularly through the...rutile, 2 %; aegirine, 0.5 %; iron ore, 0.5 %; and zircon, trace. TABLEI. Magnesioriebeckite from south-west...the weathered rocks surrounding the Mrima Hill carbonatite, Kenya, (Coetzee and Edwards, 1960), where |  | | Book | | RESOURCES OF KENYA By WILLIAM PULFREY. M.Sc., Ph.D., F.G .. , Assoc.Inst.M.M. Sniior Geolo!list, Kenya Colony...RESOURCES OF KENYA By WILLIAM PULFREY, M.Sc., Ph.D., F.G.S., Assoc.lnst.M.M . . Senior Geologist, Kenya Colony...282 283 283 284 285 Production of Minerals in Kenya Gold and Silver . Soda Products Other Minerals of... ā¢ ILLUSTRATIONS PlaJe No. I. Rosterman Gold Mine, Kakamega . facing p. 288 Lake Magadi and the... 289 p. 289 II. Simplified Geological Map of Kenya ( In pocket) Mineral Map of.Kenya ( Map Showing |  | | Journal (article/letter/editorial) | | associated with other dense, refractory minerals (e.g., zircon, rutile, and ilmenite). Although both placer and...operations usually target ilmenite, rutile, and zircon, and may produce monazite as a by-product. Hence...(primarily ilmenite, rutile, and leucoxene) and zircon production (IAEA, 2011a). As shown in Figure 1...Reliability Mineral TREO + Y TREO + Y No. of and zircon) in these deposits (<0.1% TREO + Y). level resources...NR NR Subtotal 8 115 NR NR 1.41 7,557 NR NR NR Kenya Carbonatite 2 163 3.6(1) 0.27(1) 3.9 6,286 450(1) |  | | Journal (article/letter/editorial) | | of Newcastle, New South Wales, Australia, 2Broken Hill Proprietary Company Limited, Central Research Laboratories...Weld, Western Australia Finland, Brazil, Guyana, Kenya, Tanzania, Zaire and Uganda (McNeil, 1979; Erdosh...including Nb-ilmenite, Nb-rutile, baddeleyite, zircon, magnetite and pyrochlore. Similar vertical zonations...Appreciation is expressed to the Management, Broken Hill Proprietary Company Limited, Central Research Laboratories...Engineering. Appreciation is also expressed to the Broken Hill Proprietary Company Limited, as well as CSBP and |  | | Journal (article/letter/editorial) | | considered to be attractive targets by Mountain Pass mine in California. Mountain Pass was for companies and...concenwhile TbPO4 through LuPO4 have the tetragonal zircon trations occur in beach sands and river placers...are often processed as by-products of ilmenite, zircon, and cassiterite mining. These monazites are generally...(Australia), AraxĆ” and CatalĆ£o I (Brazil), Mrima Hill (Kenya), Mabouni (Gabon), and several other carbonatite...occurs as allanite-(Y) in economic quantities. Ā Zircon (ZrSiO4) is commonly the major heavy mineral in |  | | Journal (article/letter/editorial) | | Baerzhe; 35, Bonga; 36, Kaluwe; 37, Mrima Hill; 38, Panda Hill; 39, Oka 40, Araxa; 41, Catalao I; 42...mineralsā columbite and fergusoniteāare associated with zircon and REE minerals. The most significant part of...released into tailings. NbāZr ores (pyrochlore and zircon) of the carbonatiteāfoidolite Nemegosenda massif...Bonga (the Congo craton); the Kaluwe, Panda Hill, and Mrima Hill (East African rift); and the Oka (Grenvillian...pyrochlore are weakly-weathered ones. Only the Mrima Hill massif has a thick laterite crust with the REEs |  | | Report (volume) | | Alma-ata, U.S.S.R. Kenya Geol. Survey Bull.-Geological Survey of Kenya Bulletin. Nairobi, Kenya. Khim Anal.... Oak Ridge, Tenn. Nucleonics-Nucleonics. McGraw-Hill Publishing Co. New York, N.Y. Nuevo Cimento-11 Nuevo...Monazite deposits in calcareous rocks, Northern Lehmi County, Idaho: Idaho Bur. Mines and Geology Pam ph. 99...Beryllium deposits of the Mount Antero region, Chaffee County, Colorado: U.S. Geol. Survey Bull. 982-D, p. 95-119...Rhabdophane from a rare-earth occurrence, Valley County, Idaho, in Geological Survey Research 1968: U.S |  | | Book | | MINERALS& GEMSTONES of East Africa Burundi, Kenya, Rwanda, Tanzania and Uganda Bruce Cairncross Published...Africa 10 East African resources 12 Burundi 13 Kenya 14 Rwanda 16 Tanzania 17 Uganda 20 Gemological properties...through Tanzania, Kenya, Ethiopia and into the Sudan - has blessed East Africa, Kenya and Tanzania, with...now mainland Tanzania) and then progressing to Kenya - I am proud to say that the coloured gemstones...fact is that both of the national gemstones of Kenya and Tanzania (tsavorite and tanzanite, respectively) |  | | Journal (article/letter/editorial) | | concentrations of Nb-rutile, Nb-ilmenite, magnetite, zircon and pyrochlore to distinct levels within the supergene... . . . . . . . . magnetite pyrochlore zircon Nb-ilmenite Nb-rutile . . . . . . . . ...allanite pyrite pseudomorphs amphibole pyrochlore zircon Nb-ilmenite Nb-rutile baddeleyite betafite feldspar...= pyrochlore; qtz = quartz; rut = rutile; zir = zircon; n.a. = not analysed. phates and aluminophosphates...suggested for the deeply weathered Mrima Hill carbonatite laterite, Kenya, that 5-10 volumes of carbonatite |  | | Journal (article/letter/editorial) | | Baerzhe; (35) Bonga; (36) Kaluwe; (37) Mrima Hill; (38) Panda Hill; (39) Oka; (40) Araxa; (41) CatalĆ£o I;...Fir Chuktukon Toongi Baerzhe Bonga Kaluwe Mrima Hill Panda Hill Oka Araxa CatalĆ£o I CatalĆ£o II Salitre Tapira...tantaloniobates; tt, titanite; wr, isochron on rock; z, zircon; zw, zinnwaldite; 6 ag means alkali granite; as...rare-earth elements and zircon (Cox et al., 2011), and it is REEs and zircon that are of the main economic...minerals such as eudialyte (kentbrooksite) and zircon with high contents of tantalum, niobium, and rare |  | | Report (issue) | | ~port- - - - -- - - - - - - - - Graph showing world mine production of niobium concentrate, for selected...larger, than was established when the decision to mine was made. Experts with a sound knowledge of a deposit...1970 1975 1980 1985 1990 ā¢ Year 2. World mine production of niobium concentrate, for selected...production is dominated by three producers that mine pyrochlore; the Araxa open pit in Minas Gerais,...state, also in Brazil, and the Niobec underground mine in Quebec Province, Canada. The Brazilian position |  | Taylor, Ryan D., Shah, Anjana K., Walsh, Gregory J., Taylor, Cliff D. (2019) Geochemistry and Geophysics of Iron Oxide-Apatite Deposits and Associated Waste Piles with Implications for Potential Rare Earth Element Resources from Ore and Historical Mine Waste in the Eastern Adirondack Highlands, New York, USA. Economic Geology, 114 (8) 1569-1598 doi:10.5382/econgeo.4689 | Journal (article/letter/editorial) | | Earth Element Resources from Ore and Historical Mine Waste in the Eastern Adirondack Highlands, New York...mined in the United States since the Mountain Pass mine, California, was put on care and maintenance at...xenotime, allanite, lanthanite, thorite, sphene, zircon, and stillwellite (Lupulescu et al., 2012, 2017;...boulder-sized clasts pulled from the mine and deposited near the mine openings, and tailings piles, which...Library - Acquisitions user REE RESOURCES FROM MINE WASTE, EASTERN ADIRONDACK HIGHLANDS, USA 73Ā°40ā |  | | Report (issue) | | able.pdf. Cover. The Mountain Pass Mine, San Bernardino County, California, was the only active producer...............................................O21 Mine Waste Characteristics.........................................................................O22 Mine Closure...........................................Figures O1. O2. O3. O4. O5. Graph showing world mine production of rare-earth oxides, by country and...O6 Photograph of the Mountain Pass Mine in San Bernardino County, California, which was the only active |  | | Report (issue) | | Report No. 45 COLONY AND PROTECTORATE OF KENYA MINISTRY OF COMMERCE Ć N D INDUSTRY GEOLOGICAL SURVEY...of South Nyanza, in the south-western corner of Kenya. It is a most important area as in its northern...there at an earlier date. The Macalder gold-copper mine lies in the south-west part of the area, and a brief...Rusinga Island 49 Fig. 6āGeological section of Kiahera hill, Rusinga Island 52 Fig. 7āSketch section of the...1,400 square miles of South Nyanza, in western Kenya, on the shore of Lake Victoria! The land area is |  | Melgarejo, Joan C., Costanzo, Alessandra, Bambi, Aurora C.J.M., GonƧalves, Antonio O., Neto, AndrĆ©s B. (2012) Subsolidus processes as a key factor on the distribution of Nb species in plutonic carbonatites: The Tchivira case, Angola. Lithos, 152. 187-201 doi:10.1016/j.lithos.2012.06.024 | Journal (article/letter/editorial) | | (Pcl3) and type IV pyrochlores (Pcl4) hosted in zircon crystals (Zrn). The association also include restites...quartz, strontianite [SrCO3] and hematite. Finally, zircon crystals may overgrow all the pyrochlore generations...āpandaitesā from Panda Hill in Tanzania (Jager et al., 1959), Mrima Hill in Kenya (Harris, 1965) and AraxĆ”...(Eds.), Phoscorites and Carbonatites from Mantle to Mine: Mineralogical Society Series, 10, pp. 293ā337....Harris, P.M., 1965. Pandaite from the Mrima Hill niobium deposit (Kenya). Mineralogical Magazine 35 (270) |  | | Journal (article/letter/editorial) | | % from tin slag refining and 10 % from secondary mine concentrates. Due to rapid industrialisation and...Canada account for about 92 and 7 % of Nb world mine production, respectively. Since the bulk of the...the start-up time for new operations. The Kenticha mine (Ethiopia) is a past producer that may re-enter...studies on new developments) are required in any mine as price levels vary for each deposit and are dependent...concentrate buyers. In western countries, a typical mine may take more than 3 years to put into production |  | | Report (volume) | | yielded 16,230.7 tons during 1953-56 (Pike, 1958). The mine closed in March 1959 but reportedly was reopened...apatite, sphene, allanite, thorite, monazite, and zircon, and some is deposited in intergranular films in...Shield, Canada. Granophyre_______________ Fairfax County, Va ā¢.. Granite (Boundary Peak California ____________...________________ _ Nepheline syenite_________ Augusta County, Vaā¢ā¢ Phonolite and tephrite. ___ Kaiserstuhl,... U.S.S.R. Teschenite __ -------------- Augusta County, Va __ 13 8 8 (1962). ----------------------2 |  | | Report (issue) | | More. Also, 877 ft of strata were examined in a mine drift. Inquiries : The number of inquiries has now...of HydroĀ logical Research Committee on climatic (hill) peat. Dr. W. Bullerwell served on the R.S. Jolin...maintained with Cumberland, Westmorland and West Riding County Councils on the M6 (where the I 11stitt1te carried...M l and Trans-Pennine motorways. Worcestershire County Cou11cil and the Droitwich Developrnent Authority...Reservoir, and the highway engineers of Glamorgan County Council were assisted in their i11vestigations |  | | Journal (article/letter/editorial) | | syenites (2.61 Ga)ādemonstrated the resources of zirconābritholite ores [8], although with contents and...but this point of view was recently rejected by zircon dating results [13]. Three other LSLDs of the CB...(Zandkopsdrift, 0.13 Ga), East African rift zone (Mrima Hill and others, 0.11ā0.13 Ga), Sino-Korean Shield |  | | Journal (volume) | | 17 Pyrochlore 18 Sphene 19 Zircon 19 Petrogenesis References ii Ilomba Hill from the Songwe Plain to...15 5 Radiometric map of the summit area, Ilomba Hill 16 TABLES 1 2 3 4 5 6 7 Geological history of...sphene (0.023/0 e U 3 0 8 , 3.23/0 Nb 20 5 ) and zircon (0.04% e V 3 0 8 , c. I % Nb 20 5 ), is contained...out intermittently over the past 23 years. Ilomba Hill is noteworthy for its uranium-rich pyrochlore, and...pyrochlore deposits of south-eastern Africa. Ilomba Hill lies in the extreme north-western corner of Malawi |  | | Journal (issue) | | AMBL YGONITE COLUMBITE RUTILE ILMENITE BERYL ZIRCON AND OTHER MINERALS BUYERS OF MINERALS ORES...the Colonies With appende,d summary reports on: Kenya . Uganda ā¢ Tanganyika . ā¢ ā¢ ā¢ ā¢ ā¢ ā¢ Northern...Resources COLONIAL GEOLOGICAL ABSTRACTS Part I .-Kenya . ā¢ ā¢ ā¢ ā¢ ā¢ā¢ Vll ā¢ā¢ā¢ Vlll CONTENTS PAGE...selection of these abstracts deals exclusively with Kenya. Papers published since 1950 have been abstracted...Depths of the Earth.'' 598 pp. (New York~ McGraw-Hill Book Company.) 1944. '' Volcanism and petrogenesis |  | Chakhmouradian, Anton R., Reguir, Ekaterina P., Kressall, Ryan D., Crozier, Jeremy, Pisiak, Laura K., Sidhu, Ravinder, Yang, Panseok (2015) Carbonatite-hosted niobium deposit at Aley, northern British Columbia (Canada): Mineralogy, geochemistry and petrogenesis. Ore Geology Reviews, 64. 642-666 doi:10.1016/j.oregeorev.2014.04.020 | Journal (article/letter/editorial) | | associated heavy minerals (apatite Ā± magnetite Ā± zircon Ā± baddeleyite) precipitated early in the magmatic...MiniĆØre de l'OgoouĆ© (COMILOG)/ ERAMET Cortec Mining Kenya Ltd./ Paciļ¬c Wildcat Resources Corp. ? 660 Ma...20% Nb2O5 cutoff Mrima Hill, JomboMrima alkaline complex, Kwale Dist., southern Kenya Disputed between...Niocan Inc.; mined in 1961ā 1976 by St. Lawrence mine, Oka complex, Deux-Montagnes, QuĆ©- Columbium and...aforementioned minerals, complex Nb oxides (see Section 5), zircon (as sub- to euhedral crystals associated with apatite) |
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