Copper Profiles In The Sediments Of A Mining

  • Copper profiles in the sediments of a mining-impacted lake

    14/01/2010· The sediments of Torch Lake, located in Houghton County, MI, USA, have been impacted by copper mining activity. Remediation of the site has focused on immobilizing shoreline tailing deposits. However, a large amount of copper remains in the mining-sourced sediment, and high copper concentrations persist in surface sediments. This study analyzes

  • Cited by: 7
  • (PDF) Copper Profiles in the Sediments of a Mining

    PurposeThe sediments of Torch Lake, located in Houghton County, MI, USA, have been impacted by copper mining activity. Remediation of the site has focused on immobilizing shoreline tailing deposits.

  • Copper profiles in the sediments of a mining-impacted lake.

    Purpose: The sediments of Torch Lake, located in Houghton County, MI, USA, have been impacted by copper mining activity. Remediation of the site has focused on immobilizing shoreline tailing deposits. However, a large amount of copper remains in the mining-sourced sediment, and high copper concentrations persist in surface sediments. This study analyzes sediment core and sediment trap

  • Cited by: 7
  • Copper profiles in the sediments of a mining-impacted lake

    14/01/2010· Read "Copper profiles in the sediments of a mining-impacted lake, Journal of Soils and Sediments" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • Published in: Journal of Soils and Sediments · 2010Authors: Cory P Mcdonald · Noel R Urban · John H Barkach · Dennis MccauleyAffiliation: Michigan Technological UniversityAbout: Organic matter · Environmental remediation · Natural recovery · Tailings · Deposition
  • Anthropogenic copper inventories and mercury profiles from

    vast size of Lake Superior, were sediment profiles at locations far offshore impacted by nearshore activi-ties? Did copper and associated precious metal mining modify regional fluxes for copper and mercury? Samples from thirty sediment cores document that background concentrations of copper

  • Anthropogenic Copper Inventories and Mercury Profiles from

    Sediment profiles from the Keweenaw Waterway show that THg accumulation increased 50- to 400-fold above modern-day atmospheric deposition levels during active mining and smelting operations, with

  • Nearshore Versus Offshore Copper Loading in Lake Superior

    Journal of Great Lakes Research. Volume 25, Issue 4, 1999, Pages 611-624, 1999, Pages 611-624

  • Trace Elements and Lead Isotopes in Streambed Sediment in

    Trace Elements and Lead Isotopes in Streambed Sediment in Streams Affected by Historical Mining By Stanley E. Church, Daniel M. Unruh, David L. Fey, and Tracy C. Sole Chapter D8 of Integrated Investigations of Environmental Effects of Historical Mining in the Basin and Boulder Mining Districts, Boulder River Watershed, Jefferson County, Montana

  • Anthropogenic copper inventories and mercury profiles from

    vast size of Lake Superior, were sediment profiles at locations far offshore impacted by nearshore activi-ties? Did copper and associated precious metal mining modify regional fluxes for copper and mercury? Samples from thirty sediment cores document that background concentrations of copper

  • Anthropogenic Copper Inventories and Mercury Profiles from

    Sediment profiles from the Keweenaw Waterway show that THg accumulation increased 50- to 400-fold above modern-day atmospheric deposition levels during active mining and smelting operations, with

  • Modeling copper transport in the sediments of Torch Lake

    sediments of Torch Lake are undergoing natural remediation. While copper concentrations in the water column have decreased since the end of mining operations, sediment copper concentrations have not declined2,3. Copper in the mine tailings primarily exists in readily soluble carbonate and oxide forms, whereas a large fraction of copper in the post-mining sediment is associated with organic

  • Copper and cadmium in bottom sediments dredged from

    In soils contaminated by copper mining and smelting, Copper content in the bottom sediment heap—core profile B, compared with background level (dots) Fig. 6. Cadmium content in the bottom sediment heap—core profile A, compared with background level (dots) Fig. 7. Cadmium content in the bottom sediment heap—core profile B, compared with background level (dots) It was determined that

  • Location: 8600 Rockville Pike, Bethesda, MD
  • ATSDR Public Health Statement: Copper

    21/01/2015· Copper is a reddish metal that occurs naturally in rock, soil, water, sediment, and, at low levels, air. Its average concentration in the earth's crust is about 50 parts copper per million parts soil (ppm) or, stated another way, 50 grams of copper per 1,000,000 grams of soil (1.8 ounces or 0.11 pounds of copper per 2,200 pounds of soil).

  • Microbial communities are sensitive indicators for

    Anthropogenic activities, such as mining and agriculture, have resulted in many freshwater systems having elevated concentrations of copper. Despite the prevalence of this contamination, and the vital ecological function of prokaryotes, just three studies have investigated prokaryote community responses to copper concentration in freshwater sediments.

  • Copper mining on Isle Royale 6500–5400 years ago

    Isle Royale, in Lake Superior, contains evidence of indigenous copper mining; however, the timing and geographical extent of mining activity is poorly known. We analyzed metal, carbon, nitrogen, and organic matter concentrations to document past mining pollution in sediment cores recovered from McCargoe Cove; a long, narrow inlet of Lake

  • Nearshore Versus Offshore Copper Loading in Lake Superior

    INDEX WORDS: Copper, sediments, Lake Superior, inventories, mining. 611 INTRODUCTION Copper mining along Lake Superior’s Keweenaw Peninsula was a highly profitable and productive industry: during the late 1800s and early 1900s, this tiny region was among the largest producers of cop- per in the world (Schroeder and Cole 1972). Im- mense

  • The Central African Copper Belt Geology for Investors

    8/06/2016· Sediment-hosted copper deposits are the second most important source of copper next to porphyry copper deposits and account for about 20% of the world’s copper production. The Central African Copper Belt (CACB) is the largest and most prolific mineralized sediment-hosted copper province known on Earth.

  • Copper News Copper Mining, Investment and Price News

    Copper mining, investment and price news from MINING. The latest news on copper mines and properties, mining companies and copper prices.

  • Energy and Environmental Profile of the U.S. Mining Industry 5

    Energy and Environmental Profile of the U.S. Mining Industry 5.1.3 Copper Processing Prior to pyrometallurgical, the ore (which often contains less than one percent copper) is crushed and ground with water and placed in a concentrator. The rock/water slurry is subjected to physical and chemical actions (i.e., air sparging and hydrophobic chemical

  • Sediment-Hosted Copper Deposits of the World: Deposit

    Sediment-hosted copper deposits are formed by fluid mixing in permeable sedimentary and (more rarely) volcanic rocks. Two fluids are involved: an oxidized brine carrying copper as a chloride complex, and a reduced fluid, commonly formed in the presence of anaerobic sulfate-reducing bacteria. For a sediment-hosted copper deposit to form, four

  • Copper Minerals Minerals

    Copper mining has played a key role in the development of South Australia since European settlement in 1836. In particular, the discovery of rich copper deposits at Kapunda (1842), Burra (1845), Kanmantoo–Callington (1846), Wallaroo (1859) and Moonta (1861) were vital to the early development and prosperity of the State.

  • Effects of mining on fine sediment quality; a comparison

    The impact of an abandoned hydraulic gold mine and an open cast copper-gold mine on the quality of fine-grained sediment (<63 µm) was investigated at several creeks in the Quesnel river catchment catchment in British Columbia, Canada. Bed sediment samples, suspended sediment samples, vertical profiles and/or corings were

  • Cobalt British Geological Survey

    Economic concentrations of cobalt can be found in four different geological settings, outlined in Table 3. Cobalt is almost always a by- or co-product of mining for other base metals, chiefly nickel and copper. Large quantities of cobalt also occur on the sea floor, contained within manganese nodules and cobalt-rich crusts, although these are not

  • Breakthrough in search for giant, sediment-hosted deposits

    In what could be one of the biggest advances in economic geology in decades, a global team of geoscientists led by Geoscience Australia has unveiled research that predicts the location of giant

  • Noel R. Urban Civil and Environmental Engineering

    Biography Dr. Urban's research interests include the Great Lakes, environmental cycles of major and trace elements, sediment diagenesis and stratigraphy, chemistry of natural organic matter, wetland biogeochemistry, environmental impact and fate of pollutants, influence of organisms on the chemical environment, and the role of chemical environment in controlling populations.

  • ENVIRONMENTAL IMPACT OF MINING Erosion and Hydrology

    characteristics of the landform Š those fitted to the sediment transport equation, the average annual sediment loss and the erosion rate coefficient (fig 2) Š will change in time (fig 3). The change is rapid and occurs within the first 50 years after mining is completed, after which the