Geochemical Characterization of Spilled Tailings from the ...

Geochemical Characterization of Spilled Tailings from the Mount Polley Mine Dam Failure Chris Kennedy, SRK ... and pyrite (FeS 2) • The main carbonate is calcite (CaCO 3), malachite (Cu 2CO ... Field Sampling Grey tailings Magnetite sands 17. 4. Results – Laboratory Analysis 18 0 5 10 15 20 25 30 35 40 45 01234 5678 9 10 NP

Tailings.info Los Frailes tailings dam failure

A multilayer cover has been placed over the tailings (Figure 10), and a slurry/plastic cutoff wall is installed around the perimeter of the impoundment. Additional tailings from the Los Frailes ore was placed in the mined-out Aznalcóllar Pit along with the recovered tailings and soil. The mine is …

Water Quality and Metal Transport in Water-Covered Mine ...

tailing dams. The tailings have been disposed in small lakes or ponds, with a water cover of a few meters on top. One of the most studies pyrite tailing dams has been the one at the Bjørndalen tailings pond at Loekken mine in mid Norway. The tailings contains about 36 % S. Deposition ceased in 1987.

Mineralogical and geochemical studies on pyrite and ...

pyrite and chalcopyrite remained in tailings particles. The pyrite oxidation decreased gradually from the tailings surface to a depth of about 1.8 m (Figure 1 d, left) but chalcopyrite oxidation reduced sharply to a depth of about 1.5 m (Figure 1 d, right) due to a rapid reduction in oxygen diffusion with depth.

Mine Tailings Sampling Technique - Laboratory Testing ...

Your suggestion is highly relevant. Tailings are variable by essence with mining and processing. For instance, early Pb-Zn tailings are generally pyrite-poor as pyrite was valorized for sulphur. Since a few decades, pyrite is dumped in tailings, changing radically their composition (and AMD behavior). We should talk of tailings stratigraphy here.

Oxygen penetration and mineral stability within the San ...

Location map of tailings impoundments and sampling locations. Table 1. Summary of geochemical methods applied and methodology Static testwork carried out on T#1/2 and T#5 98 samples (including 5 duplicates) sent to ACZ lab ... Rare examples of pyrite as crystalline, free grains in the tailings matrix were also observed mainly concentrated in the

The role of mineralogy on element mobility in two sulfide ...

The role of mineralogy on element mobility in two sulfide mine tailings from the Iberian Pyrite Belt (SW Spain) Dino Quispe a, Rafael Pérez-López a,⁎, Patricia Acero b, Carlos Ayora c, José Miguel Nieto a a Department of Geology, University of Huelva, Campus 'El Carmen', 21071 Huelva, Spain b Department of Earth Sciences, University of Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain

Quantitative Microbial Community Analysis of Three ...

The tailing dump consists of waste from Zn and Cu sulfidic ore processing, covers an area of 0.1 km 2, and is 6 to 7 m high. In the unoxidized tailings, the content of sulfide minerals ranges from 10 to 30% and is completely dominated by pyrite, while in the oxidized tailings …

Pyrite behaviour in a tailings pond - UCM

This paper deals with the behaviour in a tailings pond of the residues produced during the flotation of a complex sulphide ore. The composition of the tailing was essentially pyrite (63.4%) with minor amounts of Cu, Pb and Zn sulphides (1.4, 0.5 and 0.8, respectively). In addition, sulphite ion and other thiosalts were present in the liquid phase.

Geoenvironmental Characterization of Sulfide Mine Tailings ...

Where a rotary drilling machine is not possible to place, samples were collected with an Eijkelkamp soil core manual sampler. Sampling was sequential with a centimeter vertical constant spacing and lower in depth than boreholes. This is the case of tailings studied at the Iberian Pyrite Belt district . In many occasions, soils surrounding mine ...

Mineralogical characterization related to physico-chemical ...

ORIGINAL ARTICLE Mineralogical characterization related to physico-chemical conditions in the pyrite-rich tailings in Guryong Mine, Korea Yonghee MOON1, Yong-Seon ZHANG1, Yeon-Kyu SONN1, Byung-Keun HYUN1, Yungoo SONG2 and Hi-Soo MOON2 1National Institute of Agricultural Science and Technology, Su-won 441-70, Korea, 2Department of Earth System Sciences, Yonsei

GEOCHEMICAL CHARACTERISATION OF PROCESS …

geochemical characterisation of process-tailings, pyrite-concentrate and magnetite-concentrate samples implications for process-stream management graeme campbell and associates pty ltd (acn 061 827674) february 2007 job no. 0642

Soil Microbiome Dynamics During Pyritic Mine Tailing ...

Soil sampling took place annually in May/June (2010–2014, 2016) by collecting 1 m deep cores from each treatment plot in triplicate. Cores were stored on ice until processing in the lab (24–48 h after collection), which involved cutting the cores and archiving samples for different analyses. ... The pyrite fraction (% pyt) in the tailings ...

Release of Heavy Metals from the Pyrite Tailings of ...

Release of Heavy Metals from the Pyrite Tailings of ... [31,32], and they were mainly distributed in the recent tailings dumping area. At each sampling point, approximately 2.5 kg of pyrite tailings were collected from the surface 10 cm of the tailings reservoir. The samples of all 20 sampling points were mixed, and the mixed tailings were

Technical Document: Acid Mine Drainage Prediction

2.1 Sampling ... In contrast, drainage from tailing impoundments are more likely to carry a more uniform contaminant load due to their more uniform mineralogy and texture. Table 1 ... For example, marcasite and framboidal pyrite will oxidize quickly while crystalline pyrite will oxidize slowly. For discussion purposes, the oxidation of pyrite ...

Understanding Sampling Techniques - December 2005 (Vol. 75 ...

Understanding Sampling Techniques. December 2005 by Chris. There are a lot of differences between the operations of successful mining companies and ones that become financial failures, but one of the consistent key differences between them is their sampling programs.

Performance of Shallow Water Covers on Pyritic Uranium ...

The performance of in situ, shallow water covers in controlling acid generation was evaluated at four recently decommissioned pyritic uranium tailings sites at Elliot Lake, Ontario, Canada. The tailings are acid generating, having a pyrite content of approximately five to ten per cent and a very low to non-existent alkaline buffering capacity.

Mobility of Arsenic and Heavy Metals in a Sandy-Loam ...

To study the evolution in time of the oxidation processes of pyrite tailings covering the soils, a systematic sampling was made three years after the spill (Mart´ın et al., 2008). The soil was covered by a layer of tailing (2–5 cm thick) and showed a strong morphological differentiation in depth (Fig.1). Just

Soil pollution by oxidation of tailings from toxic spill ...

Soil pollution by oxidation of tailings from toxic spill of ... On the 25th April 1998, toxic water and tailings from a pyrite mine of Aznalcollar southern Spain spilled into the ... The data from the 4th May 1998, the sampling date on which the tailings were still relatively

Quantification of mineral weathering rates in sulfidic ...

Quantification of mineral weathering rates in sulfidic mine tailings under water-saturated conditions ... Microbial and abiotic oxidation of pyrite in freshly-processed tailings resulted in pyrite oxidation rates that were intermediate between these two extremes. The results from the microbial ... all the sampling in the laboratory, and also ...

An Alternative Circuit for Chalcopyrite-Pyrite Ores with ...

A simpler flotation circuit with lower operating and capital costs for treatment of such copper-gold-pyrite ores with an elevated pyrite head assay was sought in the described work. After characterising the ore, the objective was to apply bulk rougher flotation of both the copper minerals and pyrite for the copper-gold-pyrite ore at natural pH.

Release of Heavy Metals from the Pyrite Tailings of ...

The area of the tailing reservoir is about 1 km 2. 20 sampling points were selected in the tailing reservoir following a snake-shape pattern [31,32], and they were mainly distributed in the recent tailings dumping area. At each sampling point, approximately 2.5 kg of pyrite tailings were collected from the surface 10 cm of the tailings reservoir.

Talk:Iron ore - Wikipedia

Mine Tailings. I have added a section called Mine tailings that is about the reclamation and production of iron from iron ore tailings. I have also added information about iron ore mining in the United States, Canada and Brazil. If you have any questions or comments please feel free to leave me a message.

Tailings - Wikipedia

Pyrite Tailing Sampling - Heavy Mining Machinery. Pyrite Tailing Sampling . are in Figure 6 from sample Itos Granza 1 The image of Figure 7 shows secondary gypsum for-mation on galena and pyrite crystals in samples ... Read More. Estimation of mercury content in tailings of the gold mine ...


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