 | | Journal (article/letter/editorial) | | Columbite, Nigeria 245 A Note on the Occurrence of Columbite in the Younger Granites of the Jos Plateau, Nigeria...the primary occurrence of columbite on the Plateau of Nigeria, due mainly to the fact that it was then...and was regarded only as a by-product of the cassiterite won by alluvial mining methods. The Geological...Granites. In July, 1950, Amalgamated Tin Mines of Nigeria, Ltd., detailed the writers to begin an investigation...presence of columbite in decomposed biotite granite at Bassa, west of Jos, which was first discovered by Colonel |  | | Journal (article/letter/editorial) | | (1970) Origin of the Younger Granites of Northern Nigeria P. B o w D ~ Department of Geology, University...spate of publications on the younger granites of Nigeria (Jacob son et al., 1958; Turner, 1963, 1968; Choubert...a number of independent lines of research from Nigeria and other areas, which when blended together provide...Regional Setting The central area of northern Nigeria is underlain by Preeambrian schists and gneisses...and Lead The ' basement' pegmatites contain cassiterite, tourmaline, tantalite, galena etc., and have |  | | Report (issue) | | MINERAL AND VEGE'rABLE PRODUG'l'S FROwI NOBt'HER.N NIGERIA, BY PROFESSOR w. R. DUNSTAN, (Director of the...Southern Nigeria Straits Settlements ... Trinidad and Tobngo Basutoland ... Northern Nigeria Malta St...the mineral and vegetable products of Northern Nigeria, which were received at the Imperial Institute...MINERAL AND VEGETABLE PROD1JOTS FROM NORTHERN NIGERIA, BY PRO FESSOR WYNDHAM R. DUNSTAN, M.A., F.R.S...January, 1903, by the High Commissioner 0£ Northern Nigeria, together with a letter enclosing lists 0£ the |  | | Report (issue) | | ........................................ 13 Cassiterite................................................magnetitemonazite-criromite-hypersthene-xenotime-gold; and 5) cassiterite-columbite-tourmalinealmandite-staurolite-andalusite...streams mainly in Lofa, Grand Cape Mount, and Grand Bassa Counties and from beaches along the Liberian coast...area, covering parts of Montserrado, Bong, Grand Bassa, and Nimba Counties. The samples were analyzed spectrochemically...columbite-tantalite, kyanite, kaolin, ilmenite, rutile, cassiterite, possible chromite or chromium-bearing minerals |  | | Journal (article/letter/editorial) | | Northern Nigeria Author(s): Charles Lindsay Temple Source: The Geographical Journal, Vol. 40, No. 2 (Aug...http://about.jstor.org/terms ( 149 ) NORTHERN NIGERIA.* By CHARLES LINDSAY TEMPLE, C.M.G. Perhaps it...the two Protectorates of Northern and Southern Nigeria and the Colony of Lagos into one great Dependence...therefore, confine my remarks to-night to Northern Nigeria, where I have had the honour of serving over ten...populations. Historical Notes.?The modern history of Nigeria, as far as the European is concerned, may be taken |  | | Report (issue) | | COLONIAL REPORTS-MISCELLANEOUS. No. 79. NORTHERN NIGERIA. (For Report for 1906-7, see No. 59, Colonial...THE RESULTS OF THE MINERAL SURVEY OF NORTHEltN NIGERIA, 1907-8 AND 1908-9. BY PROFESSOR (Nos. V. AND...INTRODUCTION. The 111:ineral Survey 0£ Northern Nigeria having been com pleted £or the second period for...its presence was found in the rivers leaving the plateau in the neighbourhood of Danoro, and its occurrence...plains of Zaria beyond the western limit of the plateau. In 1908-9 the occurrence of tinstone in the K |  | Gunn, A.G., Dorbor, J.K., Mankelow, J.M., Lusty, P.A.J., Deady, E.A., Shaw, R.A., Goodenough, K.M. (2018) A review of the mineral potential of Liberia. Ore Geology Reviews, 101. 413-431 doi:10.1016/j.oregeorev.2018.07.021 | Journal (article/letter/editorial) | | 2014). Alluvial deposits of columbite-tantalite, cassiterite and rutile related to late-orogenic granites...of western Liberia, and in the Central Liberian Plateau. BIFs are also known from Webo Hills in south-eastern...Toto Range, Webo Hills and the Central Liberian Plateau, would benefit from systematic mapping, sampling...significant barite occurrence is found at Wouta, Grand Bassa County (Mason, 1980). Two veins were identified...an area of 22 km2 near Grebo where elevated cassiterite and columbite were identified in heavy mineral |  | | Book (edition) | | Mining and minerals in West Africa .. 60. Oil in Nigeria 61. Industry in West Africa, I: Vegetable oil processing...Dahomey and western Niger b. Nigeria and southeastern Niger 65. The states of Nigeria 66. Economic map of Gabon...political disruptions in such countries as Algeria, Nigeria, Za1re, Rwanda, and Burundi; a reduction in the...mainly by the very large exports of oil from Libya, Nigeria, and Algeria in the latter year. If the value of...important in the production of rubber in Liberia, Nigeria, and Zai:re; palm products in Ivory Coast, Cameroon |  | | Report (volume) | | -----------------------------------------------------------Nigeria ----------------------------------------------...the territory of Amapa, Brazil-alluvial gold, cassiterite, and columbite-tantalite in the Amapari River...spectrographic analyses of kyanite from Mt. Montro, Grand Bassa County, Liberia: U.S. Geol. Survey open-file rept...R., 1967, The Mt. Montro kyanite deposit, Grand Bassa County, Liberia (abs.): Geol. Mining and Metall...R., 1968, The Mt. Montro kyanite deposit, Grand Bassa County, Liberia: U.S. Geol. Survey open-file rept |  | | Book (volume) | | >> campioni di minerali comuni e ormai piuttosto bassa, data la sistema tica e secolare spoliazione delle...) . a utu nite ( R S ) , berillo ( P F ) , cassiterite ( R S ) , co lumbite ( R S ) , eosforite ( ...di silice) : queste ultime, benche instabili a bassa tempera tura, si mantengono indefinitamente, perche...classe di simmetria. Nelle classi a simrnetria bassa, si ha spesso la presenza di << assi polari >>,... ,J-. ..1._r - - - - --<' ,, , Altre classi a bassa simmetria implicano la possibilita d'avere due tipi |  | | Journal (issue) | | (orthoclase) crystals is typical of the Crestola Bassa, Gioia, Campanili and Calagio quarries, where cavities...282 Figure 65. Rutile crystals, 4-5 mm, Crestola Bassa quarry. Orlandi specimen, Gratziu photo. Rutile...T i0 2 Rutile is rather common in the Crestola Bassa and Gioia quarries and is one of the few cavity...localities. Concerning the quarries of Crestola Bassa, the data of Bracci et al. (1978) show relatively...st, 1987 Brookite T i0 2 Also in the Crestola Bassa quarries, where rutile and anatase have been found |  | | Report (issue) | | ------Mozambique------------------------------Nigeria-----------------------------------Republic of Cameroon...__________ Chemical analyses of monazite from Nigeria ________ -------------------------------------...area, Alaska_____________ 33. Monazite-bearing cassiterite concentrates from churn-drill line 94 in Boulder...countries include the Malagasy Republic, Mozambique, Nigeria, Republic of the Congo (Leopoldville), United Arab...coast of the Malagasy Republic, the cassiterite deposits of Nigeria, and at the delta of the Nile in the |  | | Book | | Mauritania Mauritius Morocco Mozambique Namibia Niger Nigeria Reunion (France) Rwanda São Thomé & Príncipe Senegal... Guinea, Guinea-Bissau, Ivory Coast, Liberia, Nigeria, Rwanda, São Tomé and Principe, Sierra Leone, Somalia...12°N E W BURKINA FASO S 50 0 50 100 km NIGERIA 10°N 10°N 4°E Parakou CENOZOIC Mostly alluvial...30,000mt/a of ore for production. Tin ore, or cassiterite, production by private companies on an artisanal...E W S 10°N 10°N CHAD 100 0 100 200 km NIGERIA Lake Mbakaou Lake Bamendjing CENTRAL AFRICAN |  | | Journal (issue) | | Cristallizza nel sistema tetragonale (classe della cassiterite) con prisma più o meno allungato e bipiramide...cristallina degli zirconi: uno strumento… Inoltre, più bassa è la temperatura di formazione minore è il grado...nella difficoltà di ritrovare inclusi magmatici di “bassa temperatura”, e quindi zirconi senza prisma!). La |  | | Journal (issue) | | marmatite, dioptasio, antimonite, rodocrosite, cassiterite, rubellite, mesolite, apofillite verde, opale...in tracce, di alcuni ossidi e solfosali quali cassiterite, rutilo, termini della serie tetraedritetennantite...problematica per la facilita con cui in ambienti a bassa umidita relativa perde l'acqua di cristallizzazione... 13, 359-365 18 - NATALE P., (1974): Relini di bassa temperatura nelle piriti di alcuni giacimenti della...risultano comoosti da lamelle di simmetria piu bassa: riscaldando il minerale le lamelle scompaiono dopo |  | | Journal (volume) | | Qeolooy of Country round Rtport Benue (Northern Nigeria) Blast-Furnaces, Powdered Coal in. Patent m.d.)...IvauhoeGold 1.38 265 383 Report Report Jantar Nigeria Jantar Nigeria's New Capital Japanese Petroleum...Laws Mining Market, Business on Report Minna (Nigeria) Tin Mint for the Transvaal Modderfontein B Report... "2 1 Mazapil Copper Northern Nigeria (Bauchi) Northern Nigeria (Bauchi) (m.rf.) Martin, H. Stuart...Indnstrial H.C.Jenkins ., Tin Fields of Northern Nigeria .<*.).. C. W. Gudgeon Tin in Tasmania Tin in Tasmania |  | | Journal (issue) | | Brazilian mines are asbestos ore, barite, beryllium, cassiterite, chrome ore, diamonds, dolomite, gold, kaolin...standards. Australia is primarily a flat, low-lying plateau, and about 95% of its land mass stands less than...Western Plateau, tl1e Eastern Highlands and the Great Artesian Basin. The vVestern Plateau which is...course of geological history, parts of me Western Plateau were eith er submerged by shelf seas or else they...high . GREAT ARTESIAN BASIN Between the Western Plateau and the Eastern Highlands lie three interior basins |  | | Report (issue) | | 113 Namibia . . . . . . . . . . . . . . . . 119 Nigeria . . . . . . . . . . . . . . . . 129 Senegal, The...diamonds in Angola, petroleum in the Congo and Nigeria, gold in Ghana, bauxite in Guinea, uranium in ...titanium, uranium, vanadium, vermiculite, and zircon. Nigeria and Libya were the largest producers of crude petroleum...small quantities in such situations include cassiterite (tin), columbite and tantalite, natron, and salt...billion, followed by Algeria at $42 billion and Nigeria at $35 billion. All tons are metric in this report |  | | Book (edition) | | Segregation of Chrome Iron Ore Segregation of Cassiterite - Segregation of Alumina as Corundum Segregation...which Extracted and Deposited the Minerals of Cassiterite Veins Nature of the Alteration in the Walls of...garnet, and other minerals. Throughout the rock cassiterite or pyritic ores may be found among the alteration-minerals...possibly some cassiterite (tinstone). v All these segregations, with the exception of cassiterite, are from...nickel and cobalt as sulphides. SEGREGATION OF CASSITERITE. is not usually met with in the oxidic segregations |  | | Book (edition) | | Segregation of Chrome Iron Ore - - Segregation of Cassiterite Segregation of Alumina as Corundum Segregation...which Extracted and Deposited the Minerals of Cassiterite Veins Nature of the Alteration in the Walls of...and other minerals. Through- out the rock cassiterite or pyritic ores may be found among the alteration-minerals...segregations, sibly some cassiterite (tinstone). with the exception of cassiterite, are from basic igneous...cobalt as sulphides. f SEGREGATION OF CASSITERITE. Cassiterite (tin dioxide) is not usually met with |  | | Catalog/List | | com/5236 57053 Tourmaline Keffi, Nassarawa State, Nigeria Suffering from a bit of alluvial wear, this 4.7...Tourmaline - 17.01 Ct. Keffi, Nasawara State, Central Nigeria Pink, with a faint violet cast, is the dominant...the area around Keffi, a town in the middle of Nigeria. The rough that furnished this eye clean gem was...Keffi, Nigeria From the big find a number of years ago; a find that put this part of Nigeria on a lot...Tourmaline - 57.75 Ct. Keffi, North Central Area, Nigeria Few gem materials will show two or more distinct |  | | Book (volume) | | sorretirres appear , granite included (Jos plateau in Nigeria, White M:)untains massif in the Appalachians)...of the Basin and Range Province, and Col umbian plateau basalts associated with intraplate volcanism; 4)...depo3its are widespread on both sides of the Colorado Plateau 31 and coincide in their distribution with Tertiary...covered by the so-called "Ordovician porphyry plateau". To the W the "Strona-Ceneri" zone is mostly in...outcrop is certainly that of the so-called Atesino plateau ( 4000 km 2 ) N of Trento, but their occurrence |  | | Journal (issue) | | material which interf ered with the purification of cassiterite tin ore; it was called Schorlein, Schorleyn or...to prob lems caused by schorl impurities in cassiterite tin ore. the German word aufschirlin, both meaning...reference to a critical swelling phase in the cassiterite beneficiation process. Dana (1837) connects the...(tourmaline, garnet, beryl, pollucite, petalite, cassiterite, etc.) concentrated in the core. 354 LOCALITIES...10. Cassiterite from San Piero in Campo (Aloisi, 1910; in Goldschmidt, 1923, q.v.). Cassiterite S n02 |  | | Report (edition) | | Etroeungt Beds of the Ardennes and includes Avonia bassa, Productella {HandingelIa) goergesi, P. (H.) piltonensis...deposit. However, north of Burlescombc garnet and cassiterite appear in the heavy mineral suite and are ascribed...lies just north of Hatherleigh. Uplift of this plateau led to rapid overdeepening of the river valleys...in very small quantities. It is believed that cassiterite (tin oxide) has been exploited in Cornwall and...bottoms as a result of the weathering of the cassiterite-bearing ore bodies and country rock under periglacial |  | | Journal (issue) | | l’asse cristallografico c, l’assenza di colore e la bassa birifrangenza grigio-giallo, fanno supporre che...ametista (9x7,5 cm), Mas Ceber, Sils, Gerona; E: cassiterite (20,5x15 cm), Penouta, Orense; F: quarzo morione |
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