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| CENTRAL NIGERIA T.A. B A D E J O K O Department of Geology, University of Ibadan, Ibadan (Nigeria) (Accepted...Mesozoic granites in central Nigeria. Chem. Geol., 54: 43--51. Biotite- and riebeckite-granites together...deposits associated with the Mesozoic Younger Granites of Nigeria. Enhanced values of Rb, Nb, Sn, Li and...magmatism. 1. I n t r o d u c t i o n The Mesozoic Younger Granite province of N i g e r i a is c h a r a...cover YOUNGER ,:,-"\ ~. !3'~I / GRANITE COMPLEXES ~ Granite and syenite r~--7Porphyry ring dykes |
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| POTENTIAL OF GRANITIC ROCKS FROM THE JOS-BUKURU COMPLEX, NORTHERN NIGERIA EBO GAB. IMEOKPARIA Department...Department of Geology, University of Ibadan, Ibadan (Nigeria) (Received May 7, 1979; accepted for publication August...potential of granitic rocks from the Jos--Bukuru Complex, northern Nigeria. Chem. Geol., 28: 69--77. Geochemical...fresh bedrock samples indicate that the Jos--Bukuru biotite granites are characterized by enhanced values...ratios. These results, as applied to the Jos--Bukuru Complex, indicate that Sabon Gida and Rayfield have |
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| Northern Nigeria Mosv. s A. O•.^r)v. Abstract The JurassicYounger Granites of northern Nigeria are closelyassociatedwith...mineralization which is confinedalmost exclusively to the biotite granites occursas disseminationsin albitzed granites...samplesfrom various but related intrusive phasesof biotite granites are examined with the main objectiv,eof...the fact that the hilly and rockytopographyof the Jos plateauhas resultedin a poor development of residualsoils...T^BLE 1. Average Chemical Composition of the Main Younger Granite Rock Types (after MacLeod et al., 1971) |
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| on April 26, 2015 RING COMPLEXES IN THE YOUNGER GRANITE PROVINCE OF NORTHERN NIGERIA CONTENTS I. INTSODUCTmN...II. GENERALFEATURES OlVTHE YOUNGER GRANITES (a) Distribution of the Younger Granites (b) Structural features...features (i) Volcanic structures (ii) Cone-sheets and ring-dykes (iii) The granite intrusions . (c) The (i)...(iv) (v) principal rock types . Rhyolites . . Biotite-granites . Riebeckite-granites Amphibole-fayalite-granites...Summary of the chemical characteristics of the Younger Granite province . 11 11 13 16 19 23 35 42 |
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| northern Nigeria T.A. BADEJOKO Department of Geology, University of lbadan, Ibadan (Nigeria) LITHOS...granites, northern Nigeria. Lithos, 17: 259-271. The biotite granites in the Nigerian Younger Granites are...miarolitic cavities, subsolidus crystallization of biotite and albite; turbidity, coarsening and incoherent...February 14, 1984) Introduction The Younger Granites o f Nigeria are characterized by e n r i c h m e...r d e r e d veins is f o u n d occasionally in biotite granites, for example in the Ririwai and Tibchi |
 | Williams, F. A., Meehan, J. A., Paulo, K. L., John, T. U., Rushtan, H. G. (1956) Economic geology of the decomposed columbite-bearing granites, Jos plateau, Nigeria. Economic Geology, 51 (4) 303-332 doi:10.2113/gsecongeo.51.4.303 | Journal (article/letter/editorial) |
| WILLIAMS, DECOMPOSED JOS PLATEAU, J. A. MEEHAN, AND H. No. 4 COLUMBITE- NIGERIA K. L. PAULO, T. U........................................... Jos-Bukuru Complex,general geology ....................................... Jos-BukuruComplex--mineralogy ....................................... Jos Granite ................................................ 321 Bukuru Granite ....................................................................... The Ropp-Tenti Complex ........................................... Kwop |
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| GeologicalSurvey oJ lt[igeria, Kaduna Sowth, I{ orthern Nigeria. INrnonucrroN In 1954,xenotime was identified by...the GeologicalSurvey by Amalgamated Tin Mines of Nigeria Ltd. The concentratewas obtained from the mineral...establishedat Rayfield (9"50'N; 8"55'E) near Jos, Northern Nigeria to work the intensely decomposedbiotitcgranite...primary columbite. The geologyof the Jos-Bukuru Younger Granite Complex, which includesthe Rayfield-Gonabiotite-granite...identification of the xenotime, Amalgamated Tin Mines of Nigeria produced high grade concentrates of the mineral |
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| Abuja, Nigeria; ** Department of Geology and Mining, Nasarawa State University, Keffi, Nigeria; ***Department...Sciences, Federal University of Petroleum, Effrun, Nigeria. Email: usbamalli@hotmail.com, alimoumouni2005@yahoo...2011. ABSTRACT The metallic mineral resources of Nigeria have not been fully appraised due to lack of sufficient...and documented. The metallic minerals found in Nigeria include iron ore (with over 3 billion metric tones)...Minerals, Technology, Nigeria 1. Introduction It has been proven that Nigeria is endowed with a lot |
 | Banerjee, D.C., Maithani, P.B., Ranganath, N., Jayaram, K.M.V. (1983) Rare-metal mineralisation in granitic rocks of the Kanigiri area in the Prakasam District, Andhra Pradesh, India. Chemical Geology, 39 (3) 319-334 doi:10.1016/0009-2541(83)90022-0 | Journal (article/letter/editorial) |
| magnetite and some cassiterite. The age of the biotite in the Kanigiri granite is 1065 Ma (8r--Rb). Structural...r o n ; S o r e n s e n , 1 9 7 4 ) in Jos Plateau o f Nigeria. F l u o r i t e , t o p a z , zircon and...close resemblance with those of the Jos--Bukuru Complex, Nigeria. Taking this as a type area for the...chemical similarity o f these granites with t he Jos--Bukuru oc- 324 Na20 + K20 • Vinukondo • Venkatac...granite and porphyritic granites are seen within the biotite granites of Kanigiri, indicating a later emplacement |
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| Columbite, Nigeria 245 A Note on the Occurrence of Columbite in the Younger Granites of the Jos Plateau, Nigeria...various members of the Younger Granite Complex columbite is found only in the biotite granites. It occurs...the primary occurrence of columbite on the Plateau of Nigeria, due mainly to the fact that it was then...accessory mineral in the Younger Granites. In July, 1950, Amalgamated Tin Mines of Nigeria, Ltd., detailed the...presence of columbite in decomposed biotite granite at Bassa, west of Jos, which was first discovered by Colonel |
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| ALBITE-RIEBECKITEGRANITE, LIRUEI GRANITE RING-COMPLEX, NORTHERN NIGERIA I.P. ORAJAKA Department of Geological...Anambra State University of Technology, Enugu (Nigeria) (Received November 20, 1985; accepted for publication...albite--riebeckite-granite, Liruei Granite ring-complex, northern Nigeria. Chem. Geol., 56 : 85--92. The Kaffo...1. Introduction The Chad Basin of northeastern Nigeria has recently been the focus of intense exploration...geochemistry and petrogenesis of the Nigerian Younger Granite complexes have been corn- pleted by Bowden |
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| of the Jarawa Younger Granite complex and its related mineralization, northern Nigeria E. G. Imeokparia...of the Jarawa Younger Granite complex and its related mineralization, northern Nigeria. Geological Magazine...of the Jarawa Younger Granite complex and its related mineralization, northern Nigeria E. G. IMEOKPARIA...City, Nigeria (Received 14 December 1983; accepted 22 June 1984) Abstract - The Jarawa Younger Granite...Granite complex is composed of high silica alkali granites that were emplaced 161 Ma ago. The granites are |
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| columbite-bearing membersof the Younger Granite suite in Northern Nigeria, and the occurrenceis of particular...beryllium mineral associated with the Nigerian Younger Granites, although beryl is not rare in the BasementComplex...granitic suite that make up the Jos-Bukuru complexin Northern Nigeria. Studies of this and other complexeshave...Publication authorized by the Directors of A. O. Nigeria, Ltd. f Research Institute of African Geology,...University of Leeds. f Formerly of A O. Nigeria Ltd., P.O. Jos, N. Nigeria. $ E. M. Eskova has recently described |
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| isotopic measurements from seven ring complexes in central Nigeria provide evidence for a systematic...occurred in the Jos Plateau region about 1 6 4 • ago. Although a small syenitetrachyte complex at Zaranda...unpublished ages of 290-330 m.y. for the southern Niger ring complexes confirm the existence of an overall southerly...southerly decreasing age trend in the Niger-Nigeria province of West Africa. Isotopic measurements on...spectrum has also been noted at the Shere Hills, near Jos, and at Liruei, near Kano, and may be representative |
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| Ahmadu Bello University, Zaria, Kaduna State, Nigeria a r t i c l e i n f o Article history: Received...Syenite Post-collisional magmatism Mineralization Nigeria a b s t r a c t The emplacement of anorogenic...collision. Where the hiatus is much longer, as in Nigeria, we appeal to a propagating zipper-like zone of...and cassiterite associated with the Younger Granites of Nigeria. © 2012 Elsevier B.V. All rights reserved...hiatus. It is not at all uncommon to find, in the younger cycle of magmatism, geochemically more evolved |
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| Printedin Northern Ireland Zirconium in Younger &mites of Northern Nigeria P. B~WDEN Mineral Resources Division...1906) Am--The zirconium oontent of 48 Nigerian Younger Granites hes been determined by X-ray fluorescence...spectrography. Values rsnge from 110-420 ppm in the biotite-gnmites to In the smphibol~grsnites (220-1600 8...the emphibole-grsnites and their peuoity in the biotite-grsnites. In oontrsst, the riebeckit+grsnites oontain...zirconium concentration in the amphibole-granites + biotite-grsnites sgpaitio ooefficients snd zirconium contents |
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| 358 Amphiboles from the Younger Granites of Nigeria. Part I. Chemical classification. By Mrs. G. D....7. [Read 7 June 1962.] Summary. The Younger Granites of Nigeria contain varied assemblages of iron-rich...been carried out on the granitic ring-complexes of Northern Nigeria, no systematic study has been made...which are associated with fayalite, pyroxene, and biotite. This paper deals mainly with the alkali amphiboles...dealt with more fully in a future paper). The Younger Granites occur throughout an area of 25 000 square |
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| K/Rb ratios in the evolution of the Younger Granites of Northern Nigeria J. R’. BUTLER, Pure Geochemistry...ratios up to 330; biotite-granites have intermediate ratios. In the Liruei complex the ratio decreases...A%mo complex the r&i0 varies irregularly. IKTRODUCTIOX THE Younger Granites of Northern Nigeria, recently...mapped and described by consist principally of biotite-granite, riebeckite-granite and hornblende-granite...hornblende-granite emplaced to give individual or overlapping ring complexes, In the north the cycle of magmatic activity |
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| niobium-rich arfvedsonite granites, Younger Granites province of Nigeria P.O. Ogunleyea,, E.C. Ikeb, I.... 1014, Zaria, Nigeria b Department of Geology, Ahmadu Bello University, Zaria, Nigeria Received 7 May...the northern sector of the Nigerian anorogenic ring-complex province wherein they form the main granitic...components of Kila-Warji, Ririwai and Dutsen-Wai ring-complexes. The albitized variety of these rocks...Anorogenic ring-complexes; Arfvedsonite granites; Albitization; Pyrochlore mineralization; Nigeria; REE patterns |
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| A GRAVITY INTERPRETATION OF THE LIRUEI RING COMPLEX, NIGERIA SIR,-I should like to consider some implications...negative anomaly was to be expected in the Liruei complex, which consists almost entirely of granitic rocks...almost completely acidic nature of the Nigerian Younger Granite province has long been recognised from...evidence from Liruei now shows that these granitic ring-complexes are unlikely to be associated with large...basic magma-cannot therefore readily be applied to Nigeria. The gravity survey indicates that the contacts |
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| auhvolanic t o plutonic nature often in the form of ring complexes. These can be subdivided into two separate...by centres of ovcrsaturated magmatism such as Nigeria and Sudan. Thcre are also provinces with undersaturated...the abundance of zircon, uranium. thorium and complex Ti-Zr silicates, the importance o f columbite,...Geochemistry Mineralization Phanerozoic Cameron Niger Nigeria Sudan Saudi Arabia Namibia 1. Introduction Most...subvolcanic to plutonic nature often in the form of ring complexes. These can be subdivided into two separate |
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| Scotland The anorogenic granitoids of Nigeria are classic exampl& of ring complexes associated with migrating...in diameter. Petrology varies from peraluminous biotite granite, through hypersthene and fayalite granites...the south. The majority of the Nigerian anorogenic ring-complexes represent the roots of volcanoes with...suitc of Mesozoic volcanic and plutonic rocks from Nigeria. Analyses of the crystalline basement rocks arc...elements Subsolidus mobilities Anorogenic granites Nigeria Fluids Geochemical characteristics 1. Introduction |
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| George Obaje Geology and Mineral Resources of Nigeria 123 Prof. Nuhu George Obaje Nasarawa State University...University Dept. Geology & Mining Keffi Nigeria nobaje@yahoo.com ISSN 0930-0317 ISBN 978-3-540-92684-9...Resources of Nigeria are very few and mostly not accessible in Libraries and Bookshops in Nigeria. This book...activities in the Geology and Mineral Resources of Nigeria. The author has brought together several published...students of geology in tertiary institutions in Nigeria and abroad. Additional insights were also provided |
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| WITH MOLYBDENITE MINERALIZATION (KIGOM COMPLEX, NORTHERN NIGERIA) EBO GAB IMEOKPARIA Department of Geology...Geology, University of Benin, Benin City (Nigeria) (Received August 8, 1983; revised and accepted April...mineralization (Kigom Complex, northern Nigeria). Chem. Geol., 47: 261--283. The Kigom igneous complex of northern...northern Nigeria is a small intrusive complex made up of peralkaline arfvedsonite granite, riebeckite-biotite...major-element chemistry typical of that of the Nigerian Younger Granites, and are enriched in Rb, Li, Zr, Nb, Th |
 | Amuda, Abdulgafar Kayode, Yang, Xiaoyong, Deng, Jianghong, Faisal, Mohamed, Cao, Jinya, Bute, Saleh Ibrahim, Girei, Musa Bala, Elatikpo, Safiyanu Muhammad (2021) Petrogenesis of the peralkaline Dutsen Wai and Ropp complexes in the Nigerian younger granites: implications for crucial metal enrichments. International Geology Review, 63 (16) 2057-2081 doi:10.1080/00206814.2020.1821250 | Journal (article/letter/editorial) |
| Dutsen Wai and Ropp complexes in the Nigerian younger granites: implications for crucial metal enrichments...Dutsen Wai and Ropp complexes in the Nigerian younger granites: implications for crucial metal enrichments...Dutsen Wai and Ropp complexes in the Nigerian younger granites: implications for crucial metal enrichments...Sciences, Bayero University Kano, Kano State, Nigeria; dDepartment of Geology, Faculty of Science, Suez...eDepartment of Geology, Ahmadu Bello University, Zaria, Nigeria ABSTRACT ARTICLE HISTORY The Dutsen Wai and Ropp |
