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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...analyses of fresh bedrock samples indicate that the Jos--Bukuru biotite granites are characterized by enhanced...ratios. These results, as applied to the Jos--Bukuru Complex, indicate that Sabon Gida and Rayfield have |
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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...trace-element content of Mesozoic granites in central Nigeria. Chem. Geol., 54: 43--51. Biotite- and riebeckite-granites...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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| Northern Nigeria Mosv. s A. Oā¢.^r)v. Abstract The JurassicYounger Granites of northern Nigeria are closelyassociatedwith...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)...of tin-bearing and barren granitesin northern Nigeria, and is in part basedon detailedprior knowledgeand...Jurassic Younger Granites of northern Nigeria form a consanguinous seriesof high level, anorogenic ring complexes |
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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)...Summary of the chemical characteristics of the Younger Granite province . 11 11 13 16 19 23 35 42 ... (d) Rop . . (e) Sha-Kaleri. 9 (f) Jos-Bukuru (g) Banke (h) K u d a r u (i) Ningi . . . . (j) Tongolo |
 | 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 ...................................... Quartz as an aid to identification..................................... Jos-BukuruComplex--mineralogy...eralogy ....................................... Jos Granite ................................................................................... 321 Bukuru Granite ...................................... |
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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...February 14, 1984) Introduction The Younger Granites o f Nigeria are characterized by e n r i c h m e...volcanic-subvolcanic granite c o m p l e x e s o f Nigeria c o m m o n l y have late granitic intrusive phases...al., 1971). Geological setting The Younger Granites of Nigeria form the southern extension of a series |
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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) |
| 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...constitute "nepheline free rocks" with or without quartz". Present investigations by the authors are related...a . TABLE I Modal analysis of rocks in the area Quartz Vinukonda K- Plagio- Bio- Musco- Fluo- feldspar...Venkatachalampalli Vinukonda (n = 4) (n = 5) Quartz Orthoclase Albite Anorthite Diopside Hypersthene |
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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...The granite contains abundant rounded grains of quartz and numerous small prisms of riebeckite set in...1. Introduction The Chad Basin of northeastern Nigeria has recently been the focus of intense exploration |
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| Columbite, Nigeria 245 A Note on the Occurrence of Columbite in the Younger Granites of the Jos Plateau, Nigeria...ABSTRACT Of the various members of the Younger Granite Complex columbite is found only in the biotite...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...in decomposed biotite granite at Bassa, west of Jos, which was first discovered by Colonel Dent-Young |
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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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| 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. Ā© 2012 Elsevier B.V. All rights reserved...hiatus. It is not at all uncommon to ļ¬nd, in the younger cycle of magmatism, geochemically more evolved |
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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 ā¢ 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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| 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...and rubidium data the evolution of the Nigerian Younger Granites appears to have been controlled by two...considers the distribution of zirconium in 48 Nigerian Younger Granites and offers further proof of the concept...the agpaitic coefficient values of the Nigerian Younger Granites should provide an indication of the alkalinity |
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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...dealt with more fully in a future paper). The Younger Granites occur throughout an area of 25 000 square...square miles in the Northern Region of Nigeria. About forty of these complexes have been found and a large |
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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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| K/Rb ratios in the evolution of the Younger Granites of Northern Nigeria J. Rā. BUTLER, Pure Geochemistry...Liruei complex the ratio decreases progressively with time of rmplacement but in the A%mo complex the r&i0...irregularly. IKTRODUCTIOX THE Younger Granites of Northern Nigeria, recently mapped and described by...hornblende-granite emplaced to give individual or overlapping ring complexes, In the north the cycle of magmatic activity...in the form of a ring dyke; biotitāe-granite is subsequently intruded inside the ring dyke and may be |
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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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| Scotland The anorogenic granitoids of Nigeria are classic exampl& of ring complexes associated with migrating...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...been restricted to specific areas in northern Nigeria for dating purposes (van Breeman o f al. 1977) |
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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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| 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 |
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| granitic rocks of the Tongolo Anorogenic Complex- Northern Nigeria E. G. Imeokparia Department of Geology... P.M.B. 1154, Benin City, Nigeria Abstract. The Tongolo Anorogenic Complex consists of peraluminous biotite...Introduction The 270 km 2 Tongolo Anorogenic Complex in northern Nigeria consists mainly of granitoids and minor... The metalliferous occurrences in the Tongolo Complex include Sn, W, Nb and Zn deposits associated with...with the biotite granite units. The Tongolo Complex is perhaps one of the few complexes in the Nigerian |
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| GRANITES OF THE LIRUEI (RIRIWAI) COMPLEX, YOUNGER GRANITE PROVINCE, NIGERIA S.J. EKWERE and M.A. OLADE*...Department of Geology, University of Calabar, Calabar (Nigeria) (Received May 19, 1983; revised and accepted...granites of the Liruei (Ririwai) Complex, Younger Granite Province, Nigeria. Chem. Geol., 45: 225--243. Geochemical...riebeckite--aegirine granites from the Ririwai Complex indicate that these rocks contain enhanced concentrations...Granite g e o c h e m i c a l p r o v i n c e o f Nigeria. M o s t o f t h e r o c k s c o n t a i n e n |
