The deposits are found near the surface and mineralization occurs at a. Also, most of the nw nigeria schist belts that have been studied are polymetallic and are endowed with mineralization such as gold 6,7,8, banded. The objectives of this work were to study field, mineralogy, and geochemical characteristics of gold bearing quartz veins and soils. Nigeria 2department of geology and mineral sciences, kwara state university, malete, kwara state. The interpretation of aeromagnetic and satellite imagery. Mica mineral deposits in nigeria and in some west african countries, there are many mining companies, as well as exporters and suppliers of the vast mineral resources in the country, and mica is one of such resources, though it may not be as common as crude oil, coal, and lead but it is deposited in various states across the country. Gold in the schist belt of nigeria occur as alluvial and elluvial deposits. The anka gold belt in nw nigeria during its heydays boasted of six productive gold mines that cover several tens of km2. Bolstered by historically high gold prices, a lack of viable alternative livelihoods, and a ready if expensive supply of mercury, there has been a resurgence of asgm activities in. Nigeria 3department of geology and mining, university of jos, jos. Four gold fields, encompassing the main producing area, can be. Geology and gold mineralization around kutcheri, northwestern nigeria. This paper therefore, attempts to update the knowledge on the structural setting, sequence stratigraphic successions and mineral resources of the lower benue trough.
Geology and mineral resources of the lower benue trough. Geophysical evaluation of gold potential in southeastern. This paper has reported the beneficiation and characterization of gold from itagunmodi gold ore in atakumosa west lga in the state of osun nigeria using cyanide solution obtained from cassava and commercially available sodium cyanide analar grade. These are 1 gold bearing sulfides, dominantly arsenopyrite, mainly disseminated in metasedimentary rocks and 2 native gold hosted in quartz veins that are as much as 25 m wide. Artisanal mining of placer gold mineralization were documented around the. Wilson school of earth sciences, university of melbourne, vic. The nigeria province 3 02 the cameroon basement 311 transatlantic connections 314 mineral deposits in the transsaharan belt 316 6. Kalangai fault system and goldrare metal pegmatite. Pdf characterization of gold mineralization in garin hawal area. Several tons of lead, zinc and barite have been mined from this rift basin. If any or some of this are capitalized on, we can see a shift in movement gradually from the crude oildependent country nigeria is at the moment. Gold deposit is by far the most important exploration target in the schist belts of nigeria and contains world class potential gold reserves.
Geophysical survey of parts of nw and nc zones of nigeria funtua and yewa paper no. Given the high economic value for gold and its economic effect on the local community, there was need to initiate ways to efficiently define the mineralization. Pdf the variety and possible origin of the nigerian gold. The interpretation of aeromagnetic and satellite imagery for.
Snnbw mineralization and gemstones emerald, topaz and fluorite. Geological map of nigeria showing the major areas of gold mineralization and location of the study area modified after the geological survey of nigeria. Epigenetic, ns, nnessw quartz veins crosscut metapelites and metagabbro in maru area. Integrated geosciences prospecting for gold mineralization in kwakuti, northcentral nigeria ejepu j. Eluvial gold occurs within maru schist belt in some locations called minor gold elds and has been recovered by artisanal miners through excavation of several pits of various dimensions and depths.
Nigeria is naturally blessed as a country, with a lot of things that we can even touch in this post. Iwo, and ilesha where they are known to be generally associated with gold mineralization. Danbatta 2008 compared the structural events of some schist belts in nw nigeria table 1 to indicated similar structural trends. Epithermal deposits are classified as products of hydrothermal fluids which have a specific depth range. The proximity of most of the raremetal bearing pegmatite fields to major transcrustal suture zones and subsidiary faults also suggests their timing of emplacement are related to that of gold mineralization 29, 72. The variety and possible origin of the nigerian gold. Delineation of hydrothermally altered zones that favour. The purpose of any mining exploration is to locate new source of minerals that can meet the needs of a nation.
Gold mineralization in nigeria is traversed by regional northwest southeast lineaments or shear zone which have been considered as continental extension of oceanic transform fault fracture zone, and it is suggested that the migmatization and metamorphic deformation of the metasedimentary and metavolcanic rocks gave rise to dispersion of gold in quartz veins within the nigeria basement complex. The cretaceous benue trough in eastern nigeria which forms the western part of the west and central african rift system wcars, hosts significant leadzincbarite mineralization and coal. The dominant fold axes and quartz vein intrusions trend nnessw parallel to the regional foliation of the rocks. Two economic styles of mineralization occur at obuasi and contribute equally to the gold budget. The study of the nigerian gold mineralisation has been hampered by the scarcity or, in many places, total lack of exposed samples of mineralised rocks, attributed. Though scarce, gold is concentrated by geologic processes to form commercial deposits of two principal types. The primary gold mineralization is associated with veins, stringers, lenses, reefs and similar bodies of quartz, quartzfeldspar and quartz tourmaline rocks in both. The extractive metallurgy of gold gold deposits types. Characterization of gold mineralization in garin hawal area, kebbi. Characterization of gold mineralization zones using. Field investigation for gold mineralization in oyo and kaduna states.
Elueze and olade 1985 carried out a geochemical exploration for gold in ilesha northwest of nigeria elueze and concluded that arsenic, which is widely used as a pathfinder for gold in other. Three types of tourmaline occurrence have been identified in the area of bin yauri, nigeria, mesothermal lode gold mineralization. The tongolo anorogenic complex consists of peraluminous biotite granites and peralkaline riebeckite granites in which mineralization is spatially associated with the peraluminous biotite granites raremetal mineralization in granitic rocks of the tongolo anorogenic complex northern nigeria. Their geology, occurrences and economic prospective 1fatoye f. The authors deployed aeromagnetic and aeroradiometric in surface. They commonly occur in island arcs and continental arcs associated with subduction. Gold and pegmatities rare mineralization are closely associated with the fractures in the. Geochemical control of mineralization in egbeisanlu. The deployed geosciences techniques comprise surface geological mapping, processing and analysis of aeromagnetic total magnetic field intensity data using oasis montaj software and xray fluorescence. Danbatta 2008 compared the structural events of some schist belts in nw nigeria table. Pdf geology and gold mineralization around kutcheri.
Proterozoic boundaries on a global scale and highlighted the witwatersrand gold uranium mineralization and the iron ore deposits of west africa, specifically mauritania and liberia. The metasediments are fractured and folded in places. India, and west australia, with a particular emphasis derry 1961 considered archeanon gold and copper. A rational geological classification of the commonly recognized lode gold deposits is feasible if it is based on the geological settings of the deposits, host rocks, nature of mineralization and geoche mical signature. Aeromagnetic investigation of geologic structures associated with gold mineralization along danja, northwestern nigeria. List of mineral resources in nigeria and their location. Gold mineralization in nigeria is traversed by regional northwest southeast lineaments or shear zone which have been considered as continental extension of oceanic transform fault fracture zone, and it is suggested that the migmatization and metamorphic deformation of the metasedimentary and metavolcanic rocks gave rise to.
Gold mineralization on the northshore property occurs in a number of settings. Evidence for two stages of mineralization in west africas. Geology and mineral resources of the lower benue trough, nigeria. Several authors have studied the gold mineralization in nigeria and the host rocks 2,3.
Mineralogical and geochemical characterization of gold. Beneficiation and characterization of gold from itagunmodi. Geochemical characteristics of mesothermal gold mineralisation in. Mineralogical and geochemical characterization of gold bearing.
Publications of ngsa nigeria geological survey agency. Tin, which is one of the oldest metals known to man, is invaluable in a. Delineation of hydrothermally altered zones that favour gold mineralization in isanlu area, nigeria using aeroradiometric data. Characterization of gold mineralization in garin hawal area. Of all these schist belts listed above, the anka schist belt was considered for this study. Primary gold mineralization displays spatial and temporal relationship with felsic to intermediate itype granitoids emplaced in the 620635 ma period, in a volcanic arc setting at 625c to 775c. The segilola gold project, proposed to be acquired by thor nigerias most advanced gold mining project with indicated resources of 555,000 ounces of gold grading at 3.
The variety and possible origin of the nigerian gold mineralization. Sixteen common types of bedrock gold deposits are distinguished from one another and their main geological attributes are. Aeromagnetic investigation of geologic structures associated. Integrated geosciences prospecting for gold mineralization in. Artisanal and smallscale gold mining asgm has long been practiced in nigeria and around the world.
The study area predominantly consists of metasediments, porphyritic granites with minor amphibolite dykes, quartz vein and quartzofeldspathic intrusions. These surveys were aimed at producing an integrated geological and structural map that will help in delineating possible gold mineralisation zones. Leadzincbarytes mineralization in the benue trough. Role of faults and folding in controlling gold mineralisation. K amuda and umar adamu danbatta and tavershima najime, year20. The okolom dogondaji area of gold mineralization is in the egbeisanlu schistbelt of southwestern nigeria, and the primary gold quartz veins and eluvialalluvial placers have been mined extensively in the period 1930s1950s. Mica mineral deposits in nigeria with their locations and uses. Nigeria, and central africa as strikeslip tectonics or other transtensional or transpressional episodes. Delineation of gold mineral potential zone using high resolution. The tongolo anorogenic complex consists of peraluminous biotite granites and peralkaline riebeckite granites in which mineralization is spatially associated with the peraluminous biotite granites raremetal mineralization in granitic rocks of the tongolo anorogenic complex northern nigeria springerlink. Barite occurences in nigeria sbm stone ore crusher nigeria. Geology and gold mineralization around kutcheri, northwestern.
Intl journal of research in chemical, metallurgical and. The okolom dogondaji area of gold mineralization is in the egbeisanlu schistbelt of southwestern nigeria, and the primary goldquartz veins and eluvialalluvial placers have been mined extensively in the period 1930s1950s. According to the geological survey of nigeria agency, nigeria has some 34 known major mineral deposits across the country. Within the afric zone, which carries an historic, non43101 compliant geological resource of 2. Integrated geosciences prospecting for gold mineralization. Leadzincbarytes mineralization in the benue trough, nigeria. General descriptive information on gold mineralization in maru schist belt has. Geoscience prospecting for gold mineralisation was conducted in kwakuti town located within latitudes 9. Characterization of gold mineralization in garin hawal. Okolomdogonadji and waya veins as case studies ibrahim garba deparlment of geology, university of maiduguri, maiduguri, nigeria. Gold potential is evident by present artisanal mining in the area. Nigeria is endowed with vast but largely untapped solid mineral resources including tin ores cassiterite and stannite. Department of geology, school of physical sciences, federal university of technology, minna, niger state, nigeria. Three types of tourmaline occurrence have been identified in the area of bin yauri, nigeria, mesothermal lodegold mineralization.
Ministry of mines and steel development exploration. Exploration of solid minerals like tin, niobium, lead, zinc and gold, goes back for more than 90 years, but there has been a worldwide scale production of tin and niobium only. Garba 2003 suggested that the gold mineralization is present in alluvial and eluvial placers and primary veins from several parts of supracrustal schist belts in the northwest and southwest of nigeria. Several authors studied the gold mineralization and the host rocks in nigeria, e. Delineation of hydrothermally altered zones that favour gold. Location, geomorphological and geological setting of the area the study area lies within latitudes 9. These are 1 goldbearing sulfides, dominantly arsenopyrite, mainly disseminated in metasedimentary rocks and 2 native gold hosted in quartz veins that are as much as 25 m wide. Gold occurs with ryrite, chalcopyrite, galena, covelite and chalcosite. Spatial distribution of gold and associated base metals in rock units of ogute area, edo state, nigeria adiotomre, e. List of gold au natural resources deposit states in nigeria gold is a natural resource deposit mainly found in the northern part of nigeria, west africa which is prominently located in iperindo in osun state and other areas near maru, tsohon birnin gwarikwaga, gurmana, anka, malele, bin yauri and okolom. Role of faults and folding in controlling gold mineralisation at fosterville, victoria l. Bolstered by historically high gold prices, a lack of viable alternative livelihoods, and a ready if expensive supply of mercury, there has been a resurgence of asgm activities in northern nigeria in recent years. Geochemistry of gold deposits in anka schist belt, northwestern. Proterozoic boundaries on a global scale and highlighted the witwatersrand golduranium mineralization and the iron ore deposits of west africa, specifically mauritania and liberia.
The mineral industrys export makes an important part of the african gross income, but the process of mineral development however. Nigeria are expected to lead to an upsurge in the exploration and development of solid mineral resources in the lower benue trough and in the country as a whole. Euhedral and polygonal magnetite with hematite constituted the major ore minerals. The area is cut and displaced by the kalangai transcurrent fault system and is underlain entirely by precambrian rocks fig. Quartz occurred as main gangue phase with appreciable sericite and chlorite. List of gold au natural resources deposit states in nigeria gold is a natural resource deposit mainly found in the northern part of nigeria, west africa which is prominently located in iperindo in osun state and other areas near maru, tsohon birnin gwarikwaga, gurmana, anka, malele, bin yauri and okolom dogondaji. Cyanide solution extracted from cassava variety tms 30572 leaves obtained from obafemi awolowo university o. List of gold au natural resources deposit states in nigeria. Gold mineralization in nigeria is traversed by regional northwest southeast lineaments or shear zone which have been considered as continental extension of oceanic transform fault fracture zone, and it is suggested that the migmatization and metamorphic deformation of the metasedimentary and metavolcanic rocks gave rise to dispersion of gold in quartz veins within the nigeria basement. Pdf garin hawal area, kebbi state, nw nigeria is part of the neoproterozoic to early phanerozoic terrane separating the west african and congo.
1505 1294 1148 1206 1386 72 935 1680 170 73 925 1254 805 490 497 1064 319 885 1036 470 1349 649 152 784 609 775 1307 365 1475 843 1287 509 1214 1017 343 891 496 574 437 1201 503 1280 1036