A greenhouse pot experiment was conducted to evaluate the potential of selected woody plants for revegetation in copper (Cu) and lead/zinc (Pb/Zn) mine tailing areas. Five woody species (Amorpha fruticosa Linn, Vitex trifolia Linn. var. simplicifolia Cham, Glochidion puberum (Linn.) Hutch, Broussone …
About three-fourths of zinc used is consumed as metal, mainly as a coating to protect iron and steel from corrosion (galvanized metal), as alloying metal to make bronze and …
Fe-sulfides associated with Belgian Pb-Zn vein deposits have been analysed by DC arc spectrometry and XRF for Tl, Ni, Co, Mn, Zn, Pb, Ge, Cd, and As. They show high Tl contents (from >30 ppm upt to 6800 ppm) and Co:Ni ratios <1. These features permit to distinguish them from Fe-sulfides of sedimentary and high temperature occurrences. …
Heavy metal pollution is becoming a serious issue in developing countries such as China, and the public is increasingly aware of its adverse health impacts in recent years. We assessed the potential health risks in a lead-zinc mining area and attempted to identify the key exposure pathways. We evaluated the spatial distributions of personal …
In 1976, a tailing dam collapse accident at the Xingping Lead–Zinc Mine in Guangxi Province, China, led to the spillage of mining wastewater and sludge into downstream agricultural lands in Side Village. Heavy metal concentrations, soil pollution and soil enzyme activity were analysed to understand the pollution characteristics of the agricultural lands …
The flotation treatment plant "El Fraile" started operations in 1945 and finished them around 1973. The average composition of the processed sulfide ore was 160 g t −1 Ag, 3.6% Pb and 7.6% Zn. In this period, 5.4 × 10 6 tons of sulfide mine tailings were generated and discharged in two adjacent narrow valleys. The tailings were deposited …
These results may help determine the pollution levels of lead–zinc mining regions and direct the remediation activities of target sites to support the environmental management of abandoned mining and tailing waste in China. Keywords. heavy metals lead–zinc mine
Study site. The investigated tailings impoundments (Fig. 1) are positioned in the typical lead-zinc mining area of South China, whose geographical coordinates are situated between 113° 39′ 47″–113° 40′ 1″ E and 25° 2′2 6″–25° 2′3 4″ N.The mine is well known for its profitable mineral deposits and tremendous production, and the abundant …
Sediment-hosted Pb-Zn deposits contain the world's greatest lead and zinc resources and dominate worldproduction of these metals. They are a diverse group of ore deposits …
In these studies, a total of 27 different mine tailings were identified, possibly amounting 137 million tons of mining wastes, rich in complex mixtures of potentially toxic elements such as ...
Lead, Zinc, and Other Trace Elements Parts of the Ozark Plateaus have a history as major producers of lead and zinc. Mining in the Study Unit has occurred primarily in …
Lead combines with other elements to form a variety of interesting minerals. The most common lead mineral is lead sulphide, (galena). Uses of Lead. ... The Red Dog Mine combined lead-zinc averages 24% with a credit of around 90 grams of silver per ton. Cominco decided to focus its resources on developing the Red Dog Mine which …
Lead ore is a naturally occurring mineral deposit that contains lead in varying concentrations. It is typically extracted from the Earth's crust through mining and is an important source of lead, which is a soft, heavy, and bluish-gray metal. Lead ore is typically found in association with other minerals and rocks in various geological …
Purpose The Qixia mine is one of the largest lead-zinc mines in Eastern China and has been operational for approximately 60 years. Source identification for trace element contamination of soils in the Qixia mining area has been lacking. This report details the evaluation and source identification of trace element contamination (including …
The lead–zinc areas of China have faced serious foulteousqulated heavy metal pollution. In this study, data on As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn concentrations in China's lead–zinc mine ...
This study involved the geochemical assessment of the occurrence and distribution of heavy metals in available agricultural soils and stream sediments in the lead–zinc mining areas of Abakaliki, Southeastern Nigeria. A total area of about 794.2 km2 was assessed, with major communities covered including Enyigba, Mkpuma Akpatakpa, …
Metals, metalloids, and radionuclides all are trace elements that occur naturally in the Earth's crust. In small quantities many trace elements are essential for health in all living organisms, but some trace elements can be toxic or cause cancer, and some can bioaccumulate. The USGS investigates where and how trace elements make their way …
Assessment of multiple exposure to chemical elements and health risks among residents near Huodehong lead-zinc mining area in Yunnan, Southwest China. Author links open ... 2011, Shi, 2013). The production and output value of lead, zinc, copper, tin and other minerals from Yunnan Province leap into the front ranks of China. …
We present a detailed assessment of world lead-zinc mineral resources, showing at least 226.1 Mt Pb and 610.3 Mt Zn • The dominant mineral deposit type is …
The Red Dog Lead-Zinc Deposit. Followup studies led to the discovery of the Red Dog lead-zinc deposit. In late 1990, after 10 years of exploration and development work, the Red Dog mine in Alaska went into …
Chemical Elements Ag Silver Cu Copper Fe Iron Mo Molybdenum Pb Lead Sn Tin V Vanadium Zn Zinc Mineral Deposit Types Cornwall Sn Cornwall-type tin deposits. Michigan Cu Michigan-type native copper deposits. MVT Mississippi-Valley-type zinc-lead deposits. PC Porphyry copper deposits. PG Pegmatite deposits.
1. Introduction. Soil is a basic element for human survival and is closely related to the safety of agricultural products [43].Heavy metal pollution of soils is a well-known environmental problem [38], [45].During the mining and smelting of mineral resources, heavy metals can be transported to the surrounding environment through …
Occupational exposure to inorganic lead occurs in mines and smelters as well as welding of lead painted metal, and in battery plants. Low or moderate exposure …
In the present study, the lead-zinc mine tailings were prepared from Iranian mines. The first type of mine tailings (T 1) with very low sulfide content (0.4%) was prepared from Tiran lead-zinc mine located in Isfahan province.The second type of mine tailings (T 2) with high sulfide content (19.9%) was prepared from Kooshk lead-zinc …
In the current study, based on a typical Chinese lead/zinc (Pb/Zn) contaminated soil, the main aim of the present study was to (i) characterize soil mineralogy using MLA analysis; (ii) determine the pH-dependent leachability, time-dependent bioavailability and bioaccessibility of toxic heavy metals; (iii) in depth expound what …
About 15 kg lead-zinc mine tailings were put on the declivity to identify the leaching characteristics of HMs from lead-zinc mine tailings under natural rainfall events (Fig. 1 A), the details of which are provided in Table S1 and Fig. S2.After each natural rainfall event, all the leachate in the aquarium was collected and stored in an amber …
Purpose The combined contamination of Pb, Zn, Cu, Cd, and As in the soils near lead/zinc mine waste posed a potential threat to the surrounding environment. Mitigation methods are needed to reduce the environmental risk. The aims of this paper were to evaluate the feasibility and efficiency of different forms of phosphates in …
The study area is located in Ugwu-Ejirija, Ihietutu of Ishiagu community in the southernmost part of the Lower Benue Rift, southeastern Nigeria (Latitudes 5° 54′ – 5° 57′ N and 7° 28′ – 7° 31′ E; Fig. 1).The study area is known for abundant lead-zinc mineralization and igneous activities (Chukwu and Obiora, 2014, Chukwu and Obiora, 2018) and lead …
It is the 24th most abundant element in Earth's crust and the 4th most widely consumed metal globally, behind iron, copper, and aluminum. At room temperature, zinc is a slightly brittle metal, but it becomes malleable at 100° C (212° F). Zinc and other base metals, such as copper and lead, are commonly found together in mineral deposits.
dominating other ores. Ebonyi State is one of the States in Nigeria that is endowed with solid minerals including lead ores. Unregulated mining in Ebonyi State started with the mining of lead-zinc (Pb-Zn) ore in 1925 (2) and since then Pb mining has progressed tremendously because of its high demand.
Energy and Environmental Profile of the U.S. Mining Industry 6 Lead and Zinc Lead and zinc ores are usually found together with gold and silver. A lead-zinc ore may also contain lead sulfide, zinc sulfide, iron sulfide, iron carbonate, and quartz. When zinc and lead sulfides are present in profitable amounts they are regarded as ore minerals.
Commodity Zinc is a brittle, whitish metal used in a wide range of industries, most familiarly as a galvanizing material for steel. Known and used for millennia, it was named "zinc" in the early 1500s by Paracelsus, a Swiss physician and philosopher. The name was derived from "zinke," a German word for "fork tooth," referring to the form …
The objectives of this study were to reveal the adaptation of the selected woody plants to mine tailings and the potential use of woody species for the revegetation of mine tailings areas in China. 1 Materials and methods 1.1 Mine tailings and soil Lead and zinc mine tailings were collected from Fuyang City (30 126 ′ N, 119 847 ′ E) and ...
Request PDF | Temporal and spatial accumulation of potentially toxic elements (PTEs) in stream sediments from a large lead–zinc mine concentration area of Baoshan, Southwest China | Purpose The ...
