 | | 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 |  | | Journal (article/letter/editorial) | | High, Yorkshire: azurite, lxxxvi Cornwall Geevor mine, Pendeen, St. Just-inRoseland: uraninite, xc Hingston...1081 South Crofty mine, Illogan, Redruth: coffinite, uraninite, xc South Terras mine, St. Stephen-inBrannel:...Derbyshire Calton Hill: olivine, ortho- and clinopyroxene, spinel, 483 Golconda mine, Hopton: auricha]cite...Edge: aurichalcite, 441 Masson Hill, Matlock: cinnabar, xc Nestus mine, Matlock Bath: aurichalcite, 441...Wood: coffini~e, uraninite, xe Staffordshire Ecton Hill, Wetton: aurichaleite, celesfine, hydrozincite, |  | | 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) | | mineralization at the Buru carbonatite centre, Western Kenya I. O. ONUONGA1,* AND P. BOWDEN2 1 Department...centre at Buru hill is located towards the eastern end of the Nyanza rift, western Kenya. As revealed by...possible to use a modern sample of water from the Kenya rift to estimate the equilibration temperature at...at which Buru carbonatite in western Kenya has recrystallized. Temperatures of ~60 to 908C suggest that...carbonatite magmatic processes. K EY WORDS : Nyanza rift, Kenya, ferrocarbonatite, ferruginous calciocarbonatite |  | | Report (issue) | | Basin, Australia); lazulite, siderite, ālimoniteā, quartz (Big Fish River, Canada); diamond (river sands...Sapucahy. At Somabula, Zimbabwe. From the Mrima Hill carbonatite, Kenya. At Issineru, Guiana. In the Bonsa River...Hot Springs, Garland Co., Arkansas; at the Silver Mine area, Madison Co., Missouri; from Indian Mountain |  | | 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...crystals of a i)hosphate mineral and a few grains of quartz. The ferromagnesian bands comprise pale yellow...albite, 57 % (including large crystals, 3 %) ; quartz, 3 %; amphibole, 15 %; biotite, 15 %; phosphate...the weathered rocks surrounding the Mrima Hill carbonatite, Kenya, (Coetzee and Edwards, 1960), where |  | | Journal (article/letter/editorial) | | together with published analyses from fenites of Kenya, Uganda and Tanzania, include those of co-existing...formed from pyroxene-gneiss (Napak), sandstones (Mrima Hill [BAKEI~, 1953]), acid volcanics (I{oma) and even...complexes of eastern Uganda and the Nyanza area of Kenya, the author and colleagues selected specimens from...KiLorneU-es I Fig. 2. Map of eastern Uganda and western Kenya, showing main ijolite-carbonatite intrusive complexes...highly recrysta]lized syenitic fenites lacking in quartz and characterised by aegirine-augite. Tororo (op |  | | 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...Schists (4) Pre-Tertiary intrusions (5) Giant White Quartz Veins 2. Tertiary Rocks (1) Lower Miocene Sediments...Rusinga Island 49 Fig. 6āGeological section of Kiahera hill, Rusinga Island 52 Fig. 7āSketch section of the |  | | Journal (issue) | | Number59 Lead-zinc deposits of the Coast Province of Kenya and some exploration guidelines Overseas Geology...Kinagoni Mine 7 4 Geological section, Kinagoni Mine North 8 5 Geological section, Kinagoni Mine South 9...1982 Lead-zinc deposits of the Coast Province of Kenya and some exploration guidelines S. F. BUGG ABSTRACT...Per1110-Triassic rocks of the Coast Province of Kenya several small and one large occurrence of lead mineralisation...plain. The largest of these occurrences, at Kinagoni Hill is composed of a stockwork of minor veins within |  | | Journal (article/letter/editorial) | | considered to be attractive targets by Mountain Pass mine in California. Mountain Pass was for companies and...(Australia), AraxĆ” and CatalĆ£o I (Brazil), Mrima Hill (Kenya), Mabouni (Gabon), and several other carbonatite...Monazite-(Nd) from Lemhi Pass (IdahoāMontana) occurs in quartzā biotiteāhematiteāthorite-bearing veins within...high-field-strength-element-bearing minerals and quartz. A recent publication on this type of zircon from...mineralogy ā¢ 24 Llano, Baringer Hill, TX Xenotime, etc. ā¢ 25 Harding Mine, NM Xenotime, etc. ā¢ 26 Maw |  | | Book | | MINERALS& GEMSTONES of East Africa Burundi, Kenya, Rwanda, Tanzania and Uganda Bruce Cairncross Published...rutile crystals partially included in transparent quartz crystals, 3 cm - Philip Hitge specimen, Bruce Cairncross...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 |  | | 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 |  | | 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 |  | | Journal (article/letter/editorial) | | Secondary carbonates, sulphates, clays, chalcedony and quartz may also be present. This contribution doc- Ā©... . . . . . . . . . . . . . . . quartz lepidocrocite atacamite anatase vermiculite barite... . . . . . . . . . . . . . . . quartz plumbogummite monazite hollandite crytomelane ...I ) . Interface with minor to major secondary quartz Fresh carbonatite (major sovite; minor beforsite...2A), plant rootlets, stratification and detrital quartz grains within the supergene horizon (Willett et |  | 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) | | In addition, veins with vugs inļ¬lled by druse quartz, carbonates and ļ¬uorite are also common. Distinct...pyrochlore generations and are present as inclusions in quartz and ļ¬uorite or as veinlets in ļ¬uoritized/siliciļ¬ed...and goethite (Gth). d) Ankerite (Ank) replaced by quartz (Qtz) associated with barite (Brt). intrusion...inļ¬lled with large euhedral ļ¬uorite, barite and quartz crystals. The grain size in these druses may reach...with quartz (Qtz) and hematite (Hem). c) Fine-grained type IV pyrochlore (Pcl4) scattered in quartz (Qtz) |  | | 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 |  | | 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 |  | 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...032% U. Other mineral phases in the ore include quartz, clinopyroxene, amphibole, and/or feldspar. Additional...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 |  | | 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 |  | | Journal (issue) | | 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...surrounded by various assemblages of grossular, epidote, quartz and chlorite, probably the result of pneumatolysis...analysed trachytes contain normative quartz. Yet there is no modal quartz in any of them and, furthermore |  | | Journal (issue) | | GAMBIA GIBRALTAR GOLD COAST HONG KONG JAMAICA KENYA LEEWARD IS. MALAYA MALTA MAURITIUS NIGERIA NORTH...Resources of Kenya. By William Pulfrey, M.Sc., Ph.D., F.G.S., Assoc. Inst. M.M., Senio,y Geologist, Kenya Colony...Edition. Pp. xvi + 312, 81 x 5f. (London : Leonard Hill, Ltd., 1947.) Price 35s. Tl1is work was first published...xviii 494, gĀ¼ X 6. (New York and London: McGraw-Hill Book Co., Inc., 1947.) Price $5.00. In view of the...Pp. xi 326, 9 X 6. (New York and London: McGraw-Hill Book Company, Inc., 1947.) Price 27s. THE SKYSCRAPER |  | | Report (volume) | | yielded 16,230.7 tons during 1953-56 (Pike, 1958). The mine closed in March 1959 but reportedly was reopened...to be higher in granite than in granodiorite or quartz monzonite. Cassiterite-bearing granite typically...regions, releases large amounts of feldspar and quartz to the sands and thereby dilutes the heavymineral...defined by Bowen ( 1937) , which includes both quartz-hearing and feldspathoidal types, the higher their...David Gottfried, written commun., 1962). For most quartz-bearing silicate rocks, diminishing CaO content |  | | Journal (article/letter/editorial) | | the beforsitic (dolomite bearing) dikes at Sengeri Hill (Mbeya carbonatite, southwestern Tanzania, East...in two belts, an eastern belt along the Uganda-Kenya border, and a western one along the Uganda-Congo...trending belt were sampled: Sukulu Hill, Tororo Hill and Bukusu Hill (Fig. 2, for geology see DAVIES, 1956)...and fenitized granite. The carbonatite at Tororo Hill represents a plug along a dike. The prominent spine...series, nepheline syenite, fenitized syenite and quartz syenite, and finally fenitized granite. In the |
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