Semantic Scholar extracted view of "Genesis of the Zinkgruvan stratiform Zn-Pb-Ag deposit and associated dolomite-hosted Cu ore, Bergslagen, Sweden" by N. Jansson et al. ... The polymetamorphosed Swartberg Cu-Pb-Zn-Ag deposit in the Namaqua Metamorphic Province of South Africa is a major metal producer in the region, yet its …

With incident light, a variety of sulphide minerals was recognised within the studied host rocks. Following dolomite phases I–IV, three consecutive sulphide stages …

Soil heavy metal pollution resulting from human activities is causing major concern due to its potential risk. In this study, four crop species with different cultivars were planted in 2 levels (heavily and slightly) of heavy metal contaminated soils, and the accumulation of Cu, Zn, Pb, and Cd in the edible parts of the crops were investigated.

1.. IntroductionThe accumulation of heavy metals in agricultural soils is of increasing concern because of food safety issues, potential health risks, and its detrimental effects on soil ecosystems (McLaughlin et al., 1999, Cui et al., 2004).Hg, Pb and Cd are of great concern because of their toxicity to human health and other organisms, whereas …

The Tiemurt Pb-Zn-Cu deposit (metal reserve: 0.29 Mt (Pb + Zn) and 0.14 Mt Cu) is hosted in the Kangbutiebao Formation volcanic-sedimentary rocks in the Chinese Altay Orogen, NW China. ... Powders (200 mesh) of pyrite, chalcopyrite and pyrrhotite were mixed with copper oxide powder, and then heated and reacted to extract the SO 2 gas.

The Great Duchy of Luxembourg comprises a Variscan basement, part of the Ardennes-Rhenish fold-and-thrust belt and an unconformable Mesozoic sedimentary cover representative of the eastern margin of the Paris Basin. The basement hosts several vein-type ore deposits, which remain almosundocumented until now, except for a few …

There is an increasing concern on heavy metal leaching from the soils amended with sewage sludge.A column study was conducted to examine the extent of leaching of five important heavy metals (Cd, Ni, Pb, Cu and Zn) from an acidic sandy soil amended with different dolomite phosphate rock (DPR) fertilizers (an application rate of …

The results show that, in the sludge sample, the sum of the percentages of the reducible and oxidizable fractions for all metals except Cu was very high (65.4% for Cd, 85.7% for Pb, 78.7% for Zn), whereas the sum of the percentages of the oxidizable and residual fractions for Cu was very high (88.8%).

The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to …

Considerable research has been done on P-induced Pb immobilization in Pb-contaminated soils. However, application of P to soils contaminated with multiple heavy metals is limited. The present study examined effectiveness of phosphoric acid (PA) and/or phosphate rock (PR) in immobilizing Pb, Cu, and …

The Mount Isa Cu-Pb-Zn deposit is hosted in the ca. 1650 Ma Urquhart Shale of the Mount Isa Group (Fig. 1).The Urquhart Shale is composed of highly interlayered fine-grained carbonaceous and dolomitic sediments, pyritic shales and various tuffaceous beds (Neudert and Russell, 1981).Sedimentological and microfossil data suggest the Urquhart …

The study focuses on the Cu-Pb-Zn tailings pond in Huili County (27°05′50″ N, 102°13′55″ E), located in the Anning River ... the release of V and Mn are positively correlated with Mg 2+ and probably related to dolomite weathering. In contrast, Zn mainly derives from anthropogenic and residual sphalerite during the mineral dissolution ...

Purpose Adsorption of metals (Pb, Cd, Cu, Ni, Zn) to TiO2 nanoparticles and bulk particles was examined for use as a contaminant removal substrate as a function of particle size, sorbent concentration, and exhaustion. Methods Adsorption experiments were conducted with 0.01, 0.1, and 0.5 g/L nanoparticles in a pH 8 solution and in spiked San …

The present study focuses on the Assif El Mal polymetallic Zn–Pb (Cu, Ag) veins located 100 km southwest of Marrakech on the northern flank of the High Atlas Range (Fig. 1 A). Discovered in the 1920s by French prospectors and mined underground between 1948 and 1960, the Assif El Mal deposit was operated by the Assif El Mal Mining Society …

1. Introduction. Zinc (Zn) is an important micronutrient for healthy growth and reproduction of plants, animals, and humans (Welch and Graham, 2004).As a key component for various enzymes in the living organisms, Zn plays an important role in essential cellular functions and metabolic pathways (Nriagu, 2011; Hafeez et al., …

The Southern Permian basin in central Europe contains a number of important high-grade sediment-hosted Cu deposits. Laterally extensive stratabound Cu and Zn-Pb sulfide mineralized rocks are located at a major stratigraphic redox boundary, where coarse-grained continental sandstones of the uppermost Rotliegend Group are overlain …

The Laochang Pb–Zn–Ag–Cu volcanogenic massive sulfide (VMS) deposit, located within the Changning–Menglian Paleotethyan suture, SW China, is an economically significant deposit with explored reserves of 866,000 metric tons (t) Pb at 4.5%, 336,000 t Zn at 3.3%, 1700 t Ag at 155 g/t, 116,000 t Cu at 0.5–0.9%, 2.84 Mt …

Dolomite was shown eective for removing metal ions such as Mn 2+ 2+, Zn, Fe, Cu 2+, Pb, Cd, Ni 2+ and Co 2+ ions while also adding Ca 2+ and Mg2+ ions from and into …

The objectives of this study were to investigate competitive sorption behaviour of heavy metals (Cd, Cu, Mn, Ni, Pb and Zn) under different management practices and identify soil characteristics that can be correlated with the retention and mobility of heavy metals using 65 calcareous soil samples. …

DOI: 10.1016/J.JTEMB.2006.01.008 Corpus ID: 9137878; Leaching potential of heavy metals (Cd, Ni, Pb, Cu and Zn) from acidic sandy soil amended with dolomite phosphate rock (DPR) fertilizers.

The concentrations of Pb, As, and Tl in sphalerite-hosted fluid inclusions in the Cu-rich stage are similar to those in Pb-Zn stage. In the Cu-rich stage, dolomite …

The basket of indices is yet to be tested on the full range of Zn–Pb deposit styles found in sedimentary basins as required in criterion (3) above. 6.1. A metal index for SEDEX Zn–Pb–Ag deposits The most obvious index to …

Through analyses of Cu, Zn, Cd, and Pb concentration in water at different flow rates, the relationship between the release flux (y) of Cu, Zn, Cd, and Pb and the flow rate (x) was established ...

The Cu, Pb, Zn, Ag-Au deposit of Amensif is located on the northern flank of the western High Atlas. This deposit is hosted in Lower Cambrian carbonate bars and is structurally controlled by NE-SW ...

The Tianbaoshan deposit is a typical large Pb–Zn deposit in the SYG area and occurs as pipe-like type, hosted by Sinian dolostone. It contains ∼26 Mt Zn–Pb ore (7.76–10.09 % Zn, 1.28–1.50 % Pb and 93.6 g t −1 Ag) and >0.1 Mt Cu ore (2.55 % Cu). In this study, the detailed mineral textures, mineral chemical and sulphur isotopic ...

The selectivity range of metals for synthesized material can be presented as Ni < Co < Zn ˜ Fe ˜ Cu ˜ Cd ˜ Pb at low concentration (100 mg L−1 ) from both model aqueous solutions (Figs. 7 and 8). At higher metal …

We used a BES with a biological anode to power the cathodic recovery of Cu, Pb, Cd, and Zn from a simulated municipal solid waste incineration ash leachate. … J Hazard Mater . 2012 Oct 15;235-236:291-7. doi: 10.1016/j.jhazmat.2012.07.058.

From the Middle Ages until the beginning of the twentieth century, extensive Zn–Pb mining and smelting was carried out in East-Belgium. By lack of waste treatment techniques and sustainable management practices, metal-bearing slags and unprocessed waste were dumped in huge tailings, which still represent an important source of …

In carbonate-hosted Pb-Zn ore, dolomite ... 2000-, and 5000-mesh sandpaper to polish and make a relatively consistent mineral surface before each detection. Polished dolomite and sphalerite flakes were conditioned in the required solutions for 20 min, which was longer than that in micro-flotation tests because of their small specific …

The average values of Pb and Zn in the paddy soil samples were 214 and 2,667 mg/kg, respectively, which exceeded the risk screening values specified in the …