Environmental Impact of Artesanal Mining of Barytes in Azara Area, Middle Benue Trough, Nigeria

Chaanda, Mohammed S.; Obaje, Nuhu George; Moumouni, A.; Goki, N. G.; Lar, U. A.

doi:10.3923/ojesci.2010.38.42

Cited by 10 publications

(9 citation statements)

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“…Three mineralized zones have been located in this belt with Pb-Zn+Cu of Abakaliki district in the Lower Benue Trough; the Arufu-Akwana Pb-Zn-F+Ba district in the Middle Benue Trough and the Zurak-Gwana-Gombe Pb-Zn+Ag district in the Upper Benue Trough (Abba, 2009;Akande and Abimbola, 1987;Ford, 1989;Olade and Marton, 1980;RMR&DC, 2004). Several baryte occurrences some of which are of economic significance, are known in the Middle Benue Trough such as Aloshi, Keana, Azara, Akiri, Wuse, Chiata, Ibi, Gbande and Gboko areas (Adubok and Imoekparia, 2008;Ajayi, 1987;Akande and Abimbola, 1987;Chaanda et al, 2010;Tate, 1959). However, only few occurrences have been investigated.…”

Section: Introductionmentioning

confidence: 97%

Rare earth element and stable sulphur (δ 34S) isotope study of baryte–copper mineralization in Gulani area, Upper Benue Trough, NE Nigeria

El-Nafaty

2015

Journal of African Earth Sciences

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Section: Introductionmentioning

confidence: 97%

Rare earth element and stable sulphur (δ 34S) isotope study of baryte–copper mineralization in Gulani area, Upper Benue Trough, NE Nigeria

El-Nafaty

2015

Journal of African Earth Sciences

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“…The E-W trends give the strongest and most persistent veins and the N-S trend the weakest. Mineralization is structurally controlled and more or less confined to the limit of these faults (Chaanda et al, 2010;Wright, 1976).…”

Section: Geology Of the Areamentioning

confidence: 99%

Baryte mineral exploration in parts of the lower Benue Trough, Nigeria

Ehirim¹,

Ebeniro²,

Ofoegbu³

2016

Int. J. Phys. Sci.

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The use of DC electrical method in baryte mineral exploration has been investigated in Buruku northeast of Markurdi, Nigeria. The objective of the study was to investigate the suitability and potential of electrical resistivity tomography (ERT) combined with vertical electrical sounding (VES) surveys in baryte mineral exploration over known deposits. Results show that the interpreted layer resistivities correlate with the 2-D observations. The study delineated averagely 28 m deep symmetrically moundshaped resistive anomalies (1500 to 5500 Ωm) encased within low resistive sandstone formation along prospective traverses. These responses are characteristics of probable vein structures associated with baryte mineralization. Two dominant E-W and NW-SE resistivity anomaly trends were delineated. The E-W trends were more prominent and persistent than the NW-SE. They are 25 to 50 m wide and stretches to over 300 m in length. The association of mineralized veins with these trends suggests that the veins must be of early Cretaceous age. These mineralized veins correlate with locations of known baryte deposits in the prospect area which hitherto, have been exploited by artisan miners. This is an obvious indication of the utility and resolution of dc electrical method in baryte mineral exploration in the area.

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“…1987Ford 1989;RMR&DC, 2004 andAbaa, 2009). Several barite occurrences some of which are of economic significance are known in the Middle Benue such as Aloshi, Keana, Azara, Akiri, Wuse, Chiata, Ibi, Gbande and Gboko areas (Tate, 1959;Ajayi, 1987;Akande and Abimbola, 1987;Adubok andImoekparia, 2008 andChaanda et al, 2010).This study deals with detailed petrography and trace element characteristics of the baritecopper mineralizations of the Gulani area.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2017

IOSR JAGG

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The geology of Gulani area is composed of Precambrian basement complex of the Older Granite suit (diorite and granites), the Cretaceous sediments of Bima, Yolde and Pindiga Formations and the Tertiary/Quaternary basalts of the Biu Plateau. Epigenetic barite-copper mineralization with barite associated with sandstones and copper occurring in granites have been mapped in the area. Unaltered (distal), hydrothermally altered (proximal) host rocks and barite and chalcopyrite/malachite mineral separates were sampled and investigated petrographically and geochemically for their trace element abundances. Reflected light microscopy of the Cu-mineralized granites show that chalcopyrite constitutes the primary sulphide veins/veinlets materials which altered to malachite and its associated limonite through the processes of hydrolysis and oxidation. Trace element geochemistry reveals that barite mineralization areas are characterized by remarkable enrichment of Ba and Sr and depletion of Rb from the distal sandstones through the proximal sandstones to the barite vein materials where the Ba content is >500,000 ppm (>50%). In the copper mineralization areas, Cu is enriched to values >10,000 ppm (>1%) in the copper mineralized granites and chalcopyrite/malachite separate. However, the Cu mineralization is accompanied by depletion of Ba, Sr and Rb and enrichments of Ag, U, V, Zr, Pb and Y.There are therefore, remarkable contrasts in respect of the trace elements behavior and abundances between barite and copper mineralization areas probably due to the variations in fluids origin, fluids and host rock compositions (sandstones and granites), the chemical activities (intensities) and temperatures of the hydrothermal fluids responsible for the deposition of barite and copper deposits.

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Environmental Impact of Artesanal Mining of Barytes in Azara Area, Middle Benue Trough, Nigeria

Cited by 10 publications

References 0 publications

Rare earth element and stable sulphur (δ 34S) isotope study of baryte–copper mineralization in Gulani area, Upper Benue Trough, NE Nigeria

Rare earth element and stable sulphur (δ 34S) isotope study of baryte–copper mineralization in Gulani area, Upper Benue Trough, NE Nigeria

Baryte mineral exploration in parts of the lower Benue Trough, Nigeria

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