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Sample ID EC pH HC O 3 4 CO 3 OH Tota l Alk Cl SO Cl:S O 4 F NO 3-N mS/c m - mg CaCO 3/kg mg/ kg mg/ kg - mg/ kg mg /kg Slimes Surficial 3.89 7.7 94 <5 <5 94 4,564
Lead was detected in all samples collected around the 55-acre tailings pile and former mine area. The XRF lead results ranged from 87 to 9,577 ppm, and the ... surficial soil and water contamination at the residence at S. Blackjack Road, as well as limiting access to …
Feb 02, 2015· A total of 299 samples from the 12 tailings piles were obtained. Samples were obtained at random locations on the top surface of those piles from small holes excavated with an excavator and ...
24 month embargo; published online: 5 June 2014
Calculated pollution index values for Lake Kalimancisediments vary from 21 to 65 and for Sasa mine surficial tailings dam material from 15 to 60. ... [7, 11], the sediment samples from Lake ...
Review of samples of sediment, tailings, and waters adjacent to the Cactus Queen gold mine, Kern County, California. Mine tailings here have high levels of arsenic. Experiments conducted on these sediments indicate that the arsenic can be released into the environment and become hazardous through chemical processes that occur when fine sediment ...
Digital elevation models of abandoned tailings were obtained using photogrammetry with UAV. A total of 37 surficial samples were collected from mine tailings to determine elemental concentrations (As, Cu, Pb, W, Zn) using portable X-ray fluorescence. Higher concentrations were found on …
Surficial geologic maps along the riparian zone of the ... Photograph of fluvial mill tailings, upper Animas River, and geochemical profile 7. Photograph of overbank deposits along the Animas River at Elk Park, and geochemical profile ... Geochemical analyses of samples collected from
dam collapsed and caused an intensive flow of tailings dam material through the Kamenica valley. Between 70,000 and 100,000 m 3 of tailings dam material was discharged into Lake Kalimanci, causing significant ecological damage (Rogan Šmuc, et al., 2009). Sampling methods 17 surficial sediment samples from Lake Kalimanci were
Jun 02, 2017· Mining activities pose a potential risk of metal contamination around mining sites. On May 6, 2010, a tailings dam failure of the Mazraeh copper mine near Ahar in East Azerbaijan province, Iran, released vast amounts of mine wastes. To better understand the magnitude of copper contamination in the waste-affected soils, it is important to assess the spatial distribution of soil copper content ...
an unconfined surficial aquifer, an underlying semiconfined sandstone aquifer, and a deeper confined sandstone aquifer. Only groundwater in the surficial aquifer has been contaminated by ore processing operations at the site. Regulatory Setting Congress passed the Uranium Mill Tailings Radiation Control Act (UMTRCA) in 1978 (Public Law 95-604), and
Surficial weathering of iron sulfide mine tailings under semi-arid climate. Download. Related Papers. An integrated geochemical and mineralogical approach for the evaluation of arsenic mobility in mining soils. By annibale mottana, Gianfelice Cinque, and Giovanna Armiento.
Surficial weathering of iron sulfide mine tailings under semi-arid climate Sarah M. Hayes1, Robert A. Root, Nicolas Perdrial2, Raina M. Maier, Jon Chorover⇑ Department of Soil, Water and Environmental Science, University of Arizona, 1177 E 4th St, Shantz 429, Tucson, AZ 85721, United States
Critical Mineral Recovery Potential from Tailings and Other Mine Waste Streams. Science Center Objects. Overview. (active tab) The primary objectives of this one-year scoping project are to determine the feasibility of extracting byproduct mineral commodities, such as critical minerals, from mine tailings. We plan to analyze the existing data ...
The deepest tailings sample collected (sample G, 180 cm) ... Ferrihydrite was detected in all surficial samples (samples A–E) with a maximum abundance in sample B. Schwertmannite is detected only in sample C where the bulk pH is intermediate (pH = 3.7). Jarosite-group minerals are present in the surficial samples A and B with abundance ...
The Investigation of an Alternative Tailings Deposition System for Uranium Tailings. Problem Statement • Cigar Lake tailings properties and ... of Post Test Surficial Samples. 44µm 75µm . Flexible Walkway. Photo courtesy of Orano Canada. Conclusions • Subaqueous deposition: – provide more flexibility with
Oct 09, 2012· OSTI.GOV Journal Article: Changes in Zinc Speciation with Mine Tailings Acidification in a Semiarid Weathering Environment
Surficial weathering of iron sulfide mine tailings under semi-arid climate. ... (oxyhydr)oxides and (hydroxy)sulfates. Transformation is nearly complete in surficial samples. Trends in molecular-scale alteration were co-located with a decrease in pH from 7.3 to 2.3, and shifts in Fe and S lability as measured via chemical extraction. Initial ...
Sampling and sample preparation Six surficial samples from Sasa tailings dam (No. 3 (H-1, H-2, H-3) and beginning of No. 4 (H-4, H-5, H-6)) were taken in October 2003, with the chosen sampling locations forming a profile along the dam from N to SE (Fig. 2). Surficial …
Positioning for a Shallow-Water Surficial Sediment Survey Background: water depth 20-30 m; non-dispersive site (anticipated) of mine tailings; natural seabed sediments of silt; tailings to fine sand; box core samples to be collected to document dispersal of tailings and concentration levels of tailings; initial sampling grid of 5x5 (25 samples) with 100 m grid spacing anticipated; multiple ...
Surficial soil (as well as subsurface soil) may include fill material the distinction between surface and subsurface soil is one of depth rather than composition.. Surficial soil samples (0 - 1') will be submitted for laboratory analysis if exposure to surface soils is currently a condition or is likely to be a condition in the future.. Surficial soil (as well as subsurface soil) may ...
Mar 20, 2019· Samples collected included big tailings (a surficial grab sample and a 60 cm core), flat tailings (4 grab samples at a variety of depths and a 120 cm core), surficial sediments (0–2 cm depth, collected from 8.0, 8.1, and 22 km downstream of the tailings piles), and an off-site control collected 1.8 km to the NW of the tailings.
Surface-water, pore-water and core samples were collected in 2001 and 2009 from above and within tailings deposited into a natural lake. Mineralogical and geochemical characterization focused on two contrasting areas of this deposit: (i) sub-aerial tailings with the water table positioned at a depth of approximately 50 cm; and (ii) sub-aqueous ...
1 · 1911 Gold grab samples up to 1,240 g/t Au at Apex. 09:38 ET - News Release. ... prospecting and surficial geochemistry, expanding on the work completed in 2019 and extending coverage over near-surface geophysical targets identified by the IP survey. ... where it is reprocessing historic tailings on a seasonal basis. 1911 Gold ...
Sep 21, 2020· laboratory results of collected surficial soil samples two additional vapor points may be added within the area between the proposed sample locations and the property line if warranted. It should be noted that if ground water is shallower than approximately 5 feet …
Samples were taken from the upper 20 cm after removing the first layer of surface soil (2 cm). The sampling of the tailings was carried out in 4 tailings reservoirs by using a specially designed cylindrical stainless steel corer, the average sample of each tailings reservoir is considered after mixture of the various sub- samples.
Toxic metal(loid) speciation during weathering of iron sulfide mine tailings under semi-arid climate
These 1,164 data records, comprise 644 records of cuvette samples; 4 records of filtered tailings deposit samples; 1 record of tailings in paste; 283 records of wall samples; and 232 records of sediment samples downstream of the deposit. It should be borne in mind that mining has developed throughout the history of the country, so that
Jul 08, 2019· Digital elevation models of abandoned tailings were obtained using photogrammetry with UAV. A total of 37 surficial samples were collected from mine tailings to determine elemental concentrations (As, Cu, Pb, W, Zn) using portable X-ray fluorescence. Higher concentrations were found on samples from mine tailing II.
Transformation is nearly complete in surficial samples. Trends in molecular-scale alteration were co-located with a decrease in pH from 7.3 to 2.3, and shifts in Fe and S lability as measured via ...