Geosciences-Scholarly Publications

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Browsing Geosciences-Scholarly Publications by Author "Adekoya, J.A"

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    GEOLOGICAL DISTRIBUTION OF MINERAL RESOURCES IN SOUTHWESTERN NIGERIA
    (Journal of Mining and Geology, 2011) Adekoya, J.A; Kehinde-Phillips, O.O; Odukoya, A.M
    Tl>e occurrence and distribution ol the resourc~s of 'outhw<:stem Nigeria >re intim~t~ly ;a.uooated w11h the geology ol tho area. The bouement complex ol southwestern Nig~ria hes to the e>~l of the We.st Nrion Cr;aton, an area that Ius undergone l~te Preombrian to early Paleooic ~ogen~sis . To the ea.st v>d south. the Mesotorc-Reccnt sedtments ol the Dahomey and Nrger Cout•l (hsrns cover the () ....,me mlncr>l r~sources of southwestern Nigeria are grouped into three. nvnely; met>lltrcrous. industn•l •rxl energy minerals. These mlnftrols can also be crouped into economic miner ol d~f>O arc known or approximated and occurrences to which tonnage onno t be rmputcd. The b•semcnl complex of «>uthwestern Nlgorb hosts lmponant deposits ol gold, In the He-llesln schist belt >nd tin-IM>t•llum·n>abn .. n rn the pcgmotrtcs of l!ero and lregun. Genulones such :u aquamarine, zircon, rutile and emerald arc illcg•lly m.ncd at Ofrki ar>d Olode. Occurrences of nickel and d>romite are known rn lfe .flesh> >re> Feldspan and quutz OCCUI' w>dely rn Ogbomosho area. Extensive deposits ol ulc are found >I Apomu and llcsha . Feldsp>rs and qu>rtz <>CCllr widely in the pegmatltu ol Olode. Osogba. lwo, lregun >nd IJero. There is •n .important dcf>Osrt or marble withrn the migmatlte-gneiu complex of lgbetl. Construction >ggrcg>t es He w;dely drllnbutcd. Srrnrl.lrly uc occvrrcr><:c s of bauxite In Orin Eklti and Oy>n. sillimanite In Orin Ekiti, Oy•n •nd lb>dan, while rn<>1 Sh>g>mu. Ewekoro, and lbese; silica sands ol Aiyetoro, ljebu-lre . Okitirup•. J1ero, Lckki and lgbakoda. Extensive <.lcpos•IS of kaolin ue fo und at Ebe, lbeso. lmeko among othen. llrick d ay dcpasiu >r1! ubiquitous. There arc occllrrencc> of phosphates at Oshosvn, Seriki-Oko, ldogo, AJdruidc and Fagbahun. These occvrrerxes ore :U'Ociatcd wit h gypsum ind are radioactive. Important deposiu ol tar und ,uc found at Yemoji. lwopin ancf Agbabu. Somll low-cost mining venture's can contribute 10 economic development ol lhc st lx.ly area by providing raw materials that would otherwise have 10 be impon~:d . In order lor government or priv>tc entrepreneurs to rc>p maximum bcncftiS from their investment In mining vcnturr.s, the problem ol iller,•l "''""'!:· pan Cl ~.lfl;: ol Rdld and gemstones will have to be addressed.