Rivers State, Nigeria. Accepted 8 November 2013 The lead-zinc deposit of Enyigba and its environs are localized in the cretaceous sedimentary rocks of the Albian Asu River Group in the Lower Benue Trough, Southeastern Nigeria. The Albian Asu River Group is made up of shale, siltstone, sandstone and limestone. The deposits were formed
subsiding basement topographical depression in the Benue basin (Burke et al., 1970). Pb-Zn occurrences in Nigeria are associated with saline water intrusion in the sedimentary basins or fractured/shear zones in crystalline rocks. The mineralisation is often associated with minor to
Basement terrains contain high levels of potentially harmful elements (PHE) (Pb, Ni, Zn, Cr, Co and Ba). Also, high levels of these toxic elements such as Pb, Zn, Cu, Cd, As, Hg, V, Co, Cr etc have been reported in most sedimentary basins in Nigeria 4. In the Younger Granite province, high values of
Part 2 provides detailed descriptions of known deposits of eighteen metals (Fe, Au, Pb, Zn, Cu, Ag, Sn, Nb, Ta, Mo, W, Ti, Bi, Cr, Ni, Pt, Mn, Al) with emphasis on their geological environment, mode of occurrence, mineralogy, origin, ore reserves mining history, and exploration. ... 23 Introduction Major Rock Groups Basement Complex Mesozoic ...
samples of outcrops of Precambrian basement rocks in Ogute area were analyzed for their Au, Ag, Cu, Zn and Pb contents using an Atomic Absorption ... basement area which is part of the south-western Basement Complex of Nigeria (Fig. 1). An extensive discussion of the ... Rock Units No of Samples Au Ag Cu Zn Pb Microgranite 12.0 11.4 5.7 8.3 4.1 ...
Strontium (Sr), Zinc (Zn), Gold (Au) Nickel (Ni), Cobalt (Co) and Lead (Pb) have the mean values of 1704 ppm, 75.11 ppm, 55.80 ppm, 40.22 ppm, 26.15 ppm, 20.94 ppm, 10.60 ppm respectively. The contamination of metals was noticed from the geo accumulation index (Igeo), for stream sediments such as Nickel (0.1), copper (0.5),
Mar 02, 2021 The Ife-Ilesha schist belt of the Nigerian Basement Complex is renowned for artisanal gold mining activities owing to the occurrence of gold-bearing eluvial deposits within and around the belt. However, gold mining operations in Ile-Ijesha axis are carried out haphazardly without consideration of probable health risks that might be posed to the miners and local community by heavy metals and ...
Heavy metals such as Zn, Pb, Fe, and Cu are abundant in the environment and contribute largely to the sustainability and equilibrium of ecosystem processes. However, because of their bioaccumulation, nondegradability, and the excessive amounts in which they exist, these metals contaminate the food chain and subsequently become a source of toxicity to human beings and the entire ecological ...
Gwana-Gombe Pb-ZnAg district in the Upper Benue Trough (Olade and Marton, 1980 Akande and Abimbola Geology and Trace Element Geochemistry of the Barite-Copper Mineralization in Gulani Area, NE
Journal of Geology and Mining Research Full Length Research Paper 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 Sciences University of Port Harcourt, East West Road P.M.B. 5323 Choba, Rivers State, Nigeria.
Trough, Nigeria was carried out to determine the Pb-Zn mineralization in the sedimentary bedrock. The conductivity contrast between the conductive mineralized veins and the host rock as generated by induction mechanism was used to delineate the potential zones of Pb-Zn mineralization. Results of high in-phase and quadrature readings due
Pb and Zn with their standard limits set by WHO and NESREA 18, 19 are shown in Table 1 and Figures 38. There is significant difference in individual element among the sample locations and each location showed similar trends of elements (p 0.05 ANOVA) except for Cd. Their concentration sequence is Pb Zn Cu Cd Cr Ni Hg As.
talline basement and sedimentary rocks are presented for comparison. ... mining. The dispersion pattern of Pb is limited as the anomalies are confined to the mineralized zones. Anomalous Zn values (200 and up to 2000 ppm) Cd Pb Zn Gneisses 0.25 46 72 (0.1-0.4)* (28-65) (45-92) Granites 0.15 20 54 (0.1-0.3) (12-30) (45-64) Anomalous 0.45 32 250
On 207 Pb/ 204 Pb vs 206 Pb/ 204 Pb and 208 Pb/ 204 Pb vs 206 Pb/ 204 Pb diagrams (Figure 4, Figure 5, Figure 6, Figure 7), the lead isotope data for whole rocks and mineralization plot in a series of echelon clusters along linear arrays. Geographical trends can be contoured (Isoplumbs) with increasing radiogenic whole rock lead to the ...
May 01, 2021 Typical example is higher concentrations of heavy metals in soils linked to PbZn mining in the southeast Missouri, USA (Potra et al., 2017), trace elements (As, Cu, Zn and Pb) around a gold mine in Ghana (Antwi-Agyei et al., 2009) with As concentrations in soils significantly higher than the Netherlands intervention value of 55 mgkg 1 and ...
The onshore Bonaparte Basin is a remote and under-explored mineral province prospective for carbonate-hosted Zn-Pb (Ag) mineralisation. The Late Palaeozoic rocks (Devonian to Carboniferous, 380 to 320 Ma) of the Bonaparte Basin were deposited on the margin of
May 29, 2020 Communication in Physical Sciences 2020, 5(3) 315-324 Authors Emmanuel U. Nwazue, Anthony T. Bolarinwa and Chinedu U. Ibe Received 29 May 2020/Accepted 20 June 2020 The geochemical studies of the Enyingba lead-zinc mineralization in the Lower Benue Trough was carried out to unravel the elemental association of the mineralization along with the gangue minerals and to
Jul 21, 2021 10.71% combined Zn-Pb from sample JBR136 The project hosts 150 known occurrences of zinc-lead mineralisation and has only been tested to shallow depths. Most historic drilling was only completed to 10-15m, with the current program drilling to 45m into the basement.
Mined deposits in the Kootenay Arc averaged between 6 and 7 Mt and contained 3-4 % Zn, 1-2 % Pb, and 3-4 g/t Ag. Duncan has reserves of 2.76 Mt with 3.3% Pb and 3.1% Zn Wigwam contains 8.48 Mt with 2.14% Pb and 3.54% Zn.
South Examples green vegetables showed higher concentrations of heavy and trace metals than other crops in Rivers State. Hart et al. posted higher concentrations of Zn, Cd, Pb, Fe, Cu, Cr, Co, and Mn in crops grown in oil-producing areas than those from crops in nonoil-producing areasOkra and cocoyam with 9.1 mg/kg and 1.1 mg/kg, respectively, in oil exploration sites in Rivers State.
Roughly 80 tons of gold, 4 000 tons of silver, 70,000 t of Zn, 55,000 t of Pb and 8,000 t of Cu have been produced during one thousand years of mining. The Kremnica epithermal gold deposit has produced around 20 t gold since the 12 th century and the same amount of gold is available in reserves of the planned open pit operation.
5 Nnabo, P. N. Environmental impacts of lead/zinc mining in Enyigba area, SE of Abakaliki, SE Nigeria. Unpublished Ph.DThesis, Ebonyi State University, Abakaliki, Nigeria, 2011 322. 6 Nnabo, P. N. Assessment of heavy metal distribution in rocks from Enyigba Pb-Zn district, southeastern Nigeria.
Table 1 lists the names of the areas and mining dis-tricts from which the samples were collected, rock type, age, associated metal type, and sample number for the samples. Intrusions in the Taishu , Obira (granite porphyry) 4 and Chichibu mi5 n-ing districts were designated as granitic rocks related Pb-Zn mineralization. to
covered the Pb-Zn mining district of Enyigba and its surrounding villages of Ameka, Ameri and Ohankwu all in Ebonyi State, southeastern Nigeria. The deposit of Pb-Zn sulphides (galena and sphalerite) in Nigeria have been known for a long time but have only been exploited in the past on a very small scale. The lead-zinc field covers over 48,000 ...
TUNGAN KUDAKU AREA, NORTH WESTERN NIGERIA BASEMENT COMPLEX, NIGERIA. Daspan, R. I. and Imagbe, L.O ... The host rock (Phyllite, Schist) and the surrounding basement rocks are possibly the source from which these ... potentials of Pb-Zn mineralization which is common with most of the barite occurrences in Nigeria. 13 .
Jan 15, 2019 Comparing to other heavy metal contaminated sites in Nigeria, e.g., municipal dumpsites , arable soils around Pb-Zn mining localities 63,64, cement factory , the heavy metal contamination level at this e-waste site is generally higher. 3.2. Distribution of heavy metals in soils
MISSISSIPPI VALLEY-TYPE PB-ZN DEPOSITS (MODELS 32a, b Briskey, 1986a,b) by David L. Leach, John B. Viets, Nora Foley-Ayuso, and Douglas P. Klein SUMMARY OF RELEVANT GEOLOGIC, GEOENVIRONMENTAL, AND GEOPHYSICAL INFORMATION Mississippi Valley-type (MVT) lead-zinc deposits are a varied family of epigenetic ore deposits that form
at the site, due to the way in which the rock was extracted. In others, as the quarry slowly fills with water, it may be a tempting place to swim. Indigenous and organized mining operations have been on-going in Nigeria since the 20th century, shortly before the 1st World War (Akande et al., 2013). However, the interest in the exploitation of
SE Nigeria were assessed for pollution monitoring in mining, quarrying, and farming areas. The levels of iron, molybdenum, vanadium, copper, lead, zinc, nickel, cobalt, manganese, chromium, barium, and beryllium were determined. The concentrations of the elements were in the order of Fe Ba Mn Cr Zn Pb Cu Co Ni As Mo.
Mining Activities and Its Hydrogeochemical Implication A Case Study of Ijero Mining Site Southwestern Nigeria. O. Ologe1 O.S. Ogungbemi2 and O.O. Alu1* 1Department of Chemical and Geological Sciences, Al-Hikmah University, Ilorin, Nigeria. 2Department of Chemical/Petroleum Engineering, Afe Babalola University, Ado Ekiti, Nigeria.
The Kroussou Project is a large scale, near surface zinc-lead project with exploration to date validating province-scale base metals potential. Apollo Minerals is earning into an 80% interest in the Project via an earn-in agreement focused on exploration for zinc and lead resources. Previous exploration work has resulted in the identification ...
An area with a recent history of mining the project is located in a proven Zn-Pb district, only 10 km south of the former Black Angel (or Maamorilik) mine that is regarded as Greenlands most profitable mine to date, producing 11 million tonnes at 12.6% Zn, 4.1 % Pb and 29 g/t Ag from 1973 to 1990 during operation by Comico and Boliden.
Bonanza gold up to 18.7g/t Au has been defined in rock chips associated with the gossanous epithermal veins with other highlight results including 2.4g/t Au, 40g/t Ag and 0.62% Cu, 0.78% Pb. Potential exists for high grade vein, breccia and semi-massive sulphide replacement styles of
Gold is the main metallic resource that has been mined in New Zealand for over 150 years. Deposits of other metals do occur, but nearly all these are geological curiosities only and have had no economic significance. New Zealand has had a favourable geological setting for gold deposit formation (a ...
3Department of Geology and Mining, University of Jos, Jos. Nigeria Accepted 15 September, 2014 Gold, tantalite and associated mineralization in Isanlu-Egbe area, SW Nigeria is the product of injection ... Significant correlation that exists between Cu/Pb/Zn and Ag/As indicates the ... gneissic basement, both of which are intruded by Pan-African ...
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