In Nigeria, occurrence of baryte deposits have been reported in several locations within the NE-SW trending Cretaceous Benue Trough (Akande and Abimbola, 1987, Akande et al., 1989, Oden, 2012, El-Nafaty, 2015) (Fig. 1).The distribution and structural control of the deposits like the PbS-ZnS-flourite mineralization have been …
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The Liangyan Zn–Pb deposit, located on the southwestern margin of the Yangtze Platform, is a carbonate–hosted Zn–Pb deposit. The deposit contains over 45.4 thousand tons of ore containing Pb + Zn metals at a grade of 5.95 % Zn and 2.18 % Pb. The in-situ trace element analysis of sphalerite from this deposit was carried out by …
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T oxic metal (Pb) has its. mean concentration above maximum toleran ce level while Zn and As levels were be low the. maximum tolerable le vels. The presence of Pb above maximum tolerance level ma ...
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Recently, basement interaction has also been favored for Irish-type Pb-Zn deposits and some MVT districts (e.g., Shelton et al., 1995;Spirikis, 1995;Everett et al., 1999), and widespread basement ...
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Zn and Cu concentrations may be low and high in soil and water around barite mining sites and gold mining sites, as reported in the literature [20, 26,90,91]. Thus, the zinc and copper ...
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Economic minerals, such as Pb–Zn deposits, limestone, barite, coal, etc., are common in Ebonyi state, which is part of the Benue Trough in Nigeria. Generally, the …
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Structural controls of Pb-Zn mineralization of Enyigba district, Abakaliki, Southeastern Nigeria. Obarezi J. E.* and Nwosu J. I. Department of Geology, Faculty of Physical …
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This study investigated ten (10) heavy metals namely As, Cd, Co, Cr, Cu, Fe, Hg, Ni, Pb and Zn in one hundred and fifteen samples from water sources and staple food cultivars around Igade mining ...
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Kuma Joshua Ayua. PDF | The polycyclic basement rocks of Nigeria have been the subject of several isolated and local studies. Despite the huge amount of studies on the... | Find, read and cite all ...
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Consistent with the present study high levels of Cd, Cu, Pb and Zn, resulting from mining activities in the area were also detected in soils within the Jiangxi and the Chongqing mining areas in ...
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The main reasons for the formation of high-grade Pb-Zn deposits were as follows: (i) The metal elements such as Pb and Zn originated from the basement, and the basement has more metal elements than the sedimentary strata obviously (Zhou, 1998, Huang et al., 2004, Zhou et al., 2018a). (ii) Compared with the typical MVT Pb-Zn …
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Comparison plots of 207 Pb/ 204 Pb vs. 206 Pb/ 204 Pb (a) and 208 Pb/ 204 Pb vs. 206 Pb/ 204 Pb (b) among Pb-Zn deposits, basement rocks and associated …
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Over 90% of barite mining activities in Nigeria are carried out by artisanal and small-scale miners (ASMs), and up to 75% of these miners operate informally, without mining license and rights. Such …
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The Ningi-Burra Pb−Zn mineralization forms part of the Nigerian Sn-Nb ± (Pb-Zn-Mo)-rich anorogenic alkaline province, also known as the Nigerian Younger Granite Complexes. Six distinct E -W trending magmatic centres have been identified in the Ningi-Burra complex, but the Pb−Zn mineralization is confined to highly evolved biotite granite ...
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We report a combined study of whole-rock major- and trace-element geochemistry, Sm Nd isotope composition, zircon U/Pb dating, and Lu Hf systematics of peralkaline and aluminous A-type granites from the Ririwai Ring Complex in north-central Nigeria. The Ririwai peralkaline and aluminous A-type granites are strongly ferroan, …
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Tsauni area is part of the Basement Complex of Nigeria situated within Gwagwalada in Abuja FCT of Paiko Sheet 185 SW. The area is a newly discovered polymetallic skarn …
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The result in Iran's Pb–Zn mining region revealed that Cd and Pb concentrations were higher than the background levels, while Vuong et al. reported a high level of contamination in an active Pb–Zn mine in Vietnam. In Enyigba, Nigeria, Obasi and Akudinobi reported severe Cd, Cu, Pb, and Zn contamination of cropland near a Pb–Zn …
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water around abandoned Pb-Zn mines in Yelu, Alkaleri Local Government Area of Bauchi State, Nigeria Received 3 May, 2017 Revised 25 May, 2017 Accepted 29 May, 2017 Published 8 June, 2017 ... The mining of northern Nigeria is known since the colonial era. The popular among them is the Jos, and in late seventies in Zamfara mining belt. The ...
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high levels of these toxic elements such as Pb, Zn, Cu, Cd, As, Hg, V, Co, Cr etc have been reported in most ... iodine is restricted to the crystalline Basement rock areas. ... Galena Mining at ...
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Polymetallic Pb-Zn, Fe (Au, Ag, Cu ±Ba) mineralization occur in both the basement metagranitoids and calc-silicate rocks (skarn). Ore grade analysis of eight (8) …
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The most important characteristics of MVT lead-zinc deposits (Leach and Sangster, 1993) are: (1) most deposits are in dolostone, less commonly in limestone or sandstone, (2) ore is epigenetic and stratabound, (3) deposits are not associated with igneous activity, (4) deposits are at shallow depths at flanks of basins, (5) deposits are in ...
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19 Citations. Explore all metrics. Abstract. The environmental effects of the mining of lead–zinc mineralization in Enyigba area, Southern Benue trough were …
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The Ningi-Burra Pb−Zn mineralization forms part of the Nigerian Sn-Nb ± (Pb-Zn-Mo)-rich anorogenic alkaline province, also known as the Nigerian Younger Granite Complexes. Six distinct E -W trending magmatic centres have been identified in the Ningi-Burra complex, but the Pb−Zn mineralization is confined to highly evolved biotite granite ...
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Water quality status of drinking water with respect to seven heavy metals (As, Cd, Cr, Hg, Mn, Pb, and Zn) in the mining area of Riruwai, Kano State, Nigeria was investigated using the heavy metal ...
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In the δ 66 Zn JMC vs. Cd/Zn plot (Fig. 8), the Maoping sphalerite samples fall along a steep linear trend (r 2 = 0.66) between the basement rocks and carbonate wallrocks, suggesting that the narrow sphalerite Zn-Cd isotopic ranges can be ascribed to binary fluid mixing, including a high δ 66 Zn–low Cd/Zn end-member and a low δ 66 Zn ...
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For example, in Nigeria, in the mining region of Enyigba, high concentrations of Cd, Cr, Pb, and Zn were found in tubers, vegetables, and fruits such as lemon (Citrus limon) and pumpkin (Cucurbita ...
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The techniques of aeromagnetic data analysis were employed to elucidate depth to magnetic basement sources, lead-zinc (pb-zn) mineralisation and heat flow in parts of Southern Benue Trough.
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Journal of African Earth Sciences, Vol. 7, No. 1, pp. 167-180, 1988 0731-7247/88 $3.00 + 0.00 Printed in Great Britain Pergamon Journals Ltd. Mineralogy, fluid inclusion and genesis of the Arufu and Akwana Pb-Zn-F mineralization, middle Benue Trough, Nigeria S. O. AKANDE,* E. E. HORNt and C. REUTEL~" * Department of …
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Lead-zinc (Pb-Zn) sulphide mining activities in the Ishiagu area in the lower Benue T rough, southeastern Nigeria have a potential significant impact on the quality of soil and water resources and ...
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The Ningi-Burra Pb−Zn mineralization forms part of the Nigerian Sn-Nb ± (Pb-Zn-Mo)-rich anorogenic alkaline province, also known as the Nigerian Younger …
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Lead, zinc, and associated minerals have been mined in the Enyigba, Nigeria area for over 92 years, leaving accumulated sulphide dumps and contaminated mine water. Stream sediment, mine tailings, mine water, stream water, and groundwater were sampled and analysed to determine the sources of potentially harmful elements in domestic water. The …
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This study determined the heavy metals concentration in arable soils and associated food crops around the Pb–Zn mines in Enyigba, Nigeria, and metal transfer factors were calculated. Air-dried samples of the soils and food crops were analyzed for 8 known nutritional and toxic heavy metals by Inductively Coupled Plasma - Mass …
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Fracture Orientation Significance in the Study of Pb-Zn Mineralization of Lower Benue Trough, Abakaliki Se Nigeria. Jacob Obarezi. Journal of Geography, Environment and …
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Mining activities have been undertaken for over 95 years in Enyigba area of southeastern Nigeria. In this area, thirty-six (36) trace metals including those that are essential for plant and animal nutrition have been analyzed from forty-nine (49) soil samples that were collected from three Pb-Zn mines. The aim of the analysis is to assess the …
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The Nigeria basement complex is part of the Upper Proterozoic Pan-African mobile belt, located between the West African and Congo Cratons and south of the Tuareg Shield (figure 1).The Pan-African reactivated mobile belt extends from Algiers across southern Sahara into Nigeria, Benin and Cameroon to northeastern Brazil, where …
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216 Geochemical and Mineralogical Studies of Kaolinitic Clays in P arts of Ilorin, Southwestern Base ment Rock Area, Nigeria content. [18, 24] h ave proposed that quartz (S iO 2 ) may occur
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The Beishan Pb–Zn deposit is located 47 km northwest of Huanjiang County, north of Hechi City, Guangxi (Fig. 1 a, b), and includes several mineralized occurrences developed in mining areas, such as Shangchao, Huada, and Caixiu.The Beishan Pb–Zn deposit has a history of discovering native siderite when searching for Fe mineralization …
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Whole rock and mineral extracts from Nigerian goldfields of late Proterozoic age are significantly more radiogenic than those from the much younger Mesozoic lead-zinc mineralization in the...
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Assessment of heavy metal contamination in soils around lead (Pb)-zinc (Zn) mining areas in Enyigba, southeastern Nigeria. Ukpong, E. E., Olade, M. A., 1979. Geochemical Surveys for lead-zinc mineralization, southern Benue Trough Nigeria.
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Introduction. Baryte is an important industrial mineral which commonly occurs as gangue in most metallic (Fe, Pb, Zn, Cu, Ag, Au) ore deposits. Occurrences of baryte deposits have been recorded in diverse geological environments such as igneous, metamorphic and sedimentary rocks of Early Archean to Late Phanerozoic (Hanor, 2000).
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