Records |
Author |
Parker, G.; Noller, B.; Waite, T.D. |
Title |
Assessment of the use of fast-weathering silicate minerals to buffer AMD in surface waters in tropical Australia |
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Book Chapter |
Year |
1999 |
Publication |
Sudbury '99; Mining and the environment II; Conference proceedings |
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Keywords |
acid mine drainage Australasia Australia buffers carbonate ion geochemistry Northern Territory Australia Pine Creek Geosyncline pollution pyrite sulfides surface water tropical environment water quality 22, Environmental geology |
Abstract |
Surface waters in the Pine Creek Geosyncline (located in Australia's “Top End”, defined as the area of Australia north of 15 degrees S) are characterized by their low carbonate buffering capacity. These waters are buffered by silicate weathering and hence are slightly acidic, ranging in pH from 4.0 to 6.0. The Pine Creek Geosyncline contains most of the Top Ends' economic mineral deposits and characteristically shows no correlation between carbonate minerals and sulfidic orebodies hosting gold deposits (unlike uranium deposits). Thus many gold mines do not have ready access to carbonate minerals for buffering acid mine drainage (AMD). It is possible that locally available fast-weathering silicate minerals may be used to buffer AMD seeps. The buffering intensity of silicate minerals exceeds that of carbonate minerals, but their slow dissolution kinetics has ensured that these materials have received little attention in treating AMD. In addition, carbonate mineral dissolution is retarded when contacted with intense AMD solutions due to the formation of surface coatings of iron minerals. The lower pH range of silicate mineral dissolution may prevent the formation of such coatings. The Pine Creek Geosyncline consists of a complex geochemistry, and a number of fast-weathering silicate minerals have been noted in various areas. The difficulty in assessing such minerals for use in buffering AMD is the lack of kinetic data available under conditions prevalent AMD (i.e., low pH solutions saturated with aluminium and silica). This study sets out to evaluate the applicability of using such minerals to treat AMD surface seeps. |
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Goldsack, D.E.; Belzile, N.; Yearwood, P.; Hall, G.J. |
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0886670470 |
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Assessment of the use of fast-weathering silicate minerals to buffer AMD in surface waters in tropical Australia; GeoRef; English; 2000-048644; Sudbury '99; Mining and the environment II, Sudbury, ON, Canada, Sept. 13-17, 1999 References: 36; illus. incl. 2 tables |
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CBU @ c.wolke @ 16594 |
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273 |
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Author |
Nawrot, J.R.; Conley, P.S.; Sandusky, J.E. |
Title |
Concentrated alkaline recharge pools for acid seep abatement; principles, design, construction, and performance |
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Book Chapter |
Year |
1994 |
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Special Publication – United States. Bureau of Mines, Report: BUMINES-SP-06A-94 |
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Pages |
382-391 |
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acid mine drainage; alkalinity; concentration; pollution; ponds; preventive measures; remediation; seepage; waste disposal; water quality 22, Environmental geology |
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Proceedings of the International land reclamation and mine drainage conference and Third international conference on The abatement of acidic drainage; Volume 1 of 4; Mine drainage |
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Concentrated alkaline recharge pools for acid seep abatement; principles, design, construction, and performance; GeoRef; English; 2007-045192; International land reclamation and mine drainage conference and Third international conference on The abatement of acidic drainage, Pittsburgh, PA, United States, April 24-29, 1994 References: 11; illus. incl. 2 tables, sketch map |
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CBU @ c.wolke @ 6589 |
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288 |
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Bridwell, R.J.; Travis, B.J.; Stone, W. |
Title |
Remediation of acid mine drainage Ground water technology and tasks in the 90's |
Type |
Book Chapter |
Year |
1993 |
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acid mine drainage; ground water; iron sulfides; kinetics; mathematical models; movement; pollutants; remediation; sulfides; water quality 22, Environmental geology |
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Remediation of acid mine drainage Ground water technology and tasks in the 90's; GeoRef; English; 1996-020061; Rocky Mountain ground water conference and 6th annual conference American Water Resource Association, New Mexico Section , on Ground water technology and tasks in the 90's, Albuquerque, NM, United States, Oct. 27-29, 1993 |
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CBU @ c.wolke @ 6703 |
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436 |
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Ketellapper, V.L.; Williams, L.O.; Bell, R.S.; Cramer, M.H. |
Title |
The control of acid mine drainage at the Summitville Mine Superfund Site |
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Book Chapter |
Year |
1996 |
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Proceedings of the Symposium on the Application of Geophysics to Environmental and Engineering Problems (SAGEEP), vol.1996 |
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Pages |
303-311 |
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acid mine drainage Colorado Del Norte Colorado gold ores metal ores mines mining mining geology open-pit mining pollutants pollution remediation Rio Grande County Colorado Summitville Mine Superfund sites surface mining United States water quality 22, Environmental geology |
Abstract |
The Summitville Mine Superfund Site is located about 25 miles south of Del Norte, Colorado, in Rio Grande County. Occurring at an average elevation of 11,500 feet in the San Juan Mountain Range, the mine site is located two miles east of the Continental Divide. Mining at Summitville has occurred since 1870. The mine was most recently operated by Summitville Consolidated Mining Company, Inc. (SCMCI) as an open pit gold mine with extraction by means of a cyanide leaching process. In December of 1992, SCMCI declared bankruptcy and vacated the mine site. At that time, the US Environmental Protection Agency (EPA) took over operations of the water treatment facilities to prevent a catastrophic release of cyanide and metal-laden water from the mine site. Due to high operational costs of water treatment (approximately $50,000 per day), EPA established a goal to minimize active water treatment by reducing or eliminating acid mine drainage (AMD). All of the sources of AMD generation on the mine site were evaluated and prioritized. Of the twelve areas identified as sources of AMD, the Cropsy Waste Pile, the Summitville Dam Impoundment, the Beaver Mud Dump, the Reynolds and Chandler adits, and the Mine Pits were consider to be the most significant contributors to the generation of metal-laden acidic (low pH) water. A two part plan was developed to control AMD from the most significant sources. The first part was initiated immediately to control AMD being released from the Site. This part focused on improving the efficiency of the water treatment facilities and controlling the AMD discharges from the mine drainage adits. The discharges from the adits was accomplished by plugging the Reynolds and Chandler adits. The second part of the plan was aimed at reducing the AMD generated in groundwater and surface water runoff from the mine wastes. A lined and capped repository located in the mine pits for acid generating mining waste and water treatment plant sludge was found to be the most feasible alternative. Beginning in 1993, mining wastes which were the most significant sources of AMD were being excavated and placed in the Mine Pits. In November 1995, all of the waste from these sources had been excavated and placed in the the Mine Pits. This paper discusses EPA's overall approach to stabilize on-site sources sufficiently such that aquatic, agricultural, and drinking water uses in the Alamosa watershed are restored and/or maintained with minimal water treatment. |
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The control of acid mine drainage at the Summitville Mine Superfund Site; GeoRef; English; 2002-027195; Symposium on the Application of geophysics to engineering and environmental problems, Keystone, CO, United States, April 28-May 2, 1996 References: 11; illus. incl. geol. sketch map |
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no |
Call Number |
CBU @ c.wolke @ 16654 |
Serial |
334 |
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Author |
Stewart, B.R. |
Title |
The influence of fly ash additions on acid mine drainage production from coarse coal refuse |
Type |
Book Whole |
Year |
1996 |
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Keywords |
acid mine drainage; acidic composition; alkalic composition; alkalinity; ash; coal; controls; copper; diffusion; dissolved materials; experimental studies; geologic hazards; hydraulic conductivity; iron; leachate; leaching; manganese; metals; organic residues; oxidation; oxygen; pH; pollutants; pollution; sedimentary rocks; soil treatment; soils; sorption; sulfate ion; waste disposal; water quality 22, Environmental geology |
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Ph.D. thesis |
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Virginia Polytechnic Institute and State University, |
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Blacksburg |
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The influence of fly ash additions on acid mine drainage production from coarse coal refuse; GeoRef; English |
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CBU @ c.wolke @ 6351 |
Serial |
230 |
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