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Title Questa baseline and pre-mining ground-water quality investigation. 19, Leaching characteristics of composited materials from mine waste-rock piles and naturally altered areas near Questa, New Mexico [electronic resource] / by Kathleen S. Smith ... [et al.].

Imprint Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2007.

Copies

Location Call No. OPAC Message Status
 Axe Federal Documents Online  I 19.42/4-4:2006-5165    ---  Available
Description vii, 49 p. : digital, PDF file
Series Scientific investigations report ; 2006-5165
System Details Mode of access: Internet from the USGS web site. Address as of 11/10/08: http://pubs.usgs.gov/sir/2006/5165/pdf/sir06-5165%5F508.pdf; current access available via PURL.
Note Title from title screen (viewed on Nov. 10, 2008).
Summary The goal of this study is to compare and contrast the leachability of metals and the acidity from individual mine waste-rock piles and natural erosional scars in the study area near Questa, New Mexico. Surficial multi-increment (composite) samples less than 2 millimeters in diameter from five waste-rock piles, nine erosional-scar areas, a less-altered site, and a tailings slurry-pipe sample were analyzed for bulk chemistry and mineralogy and subjected to two back-to-back leaching procedures. The first leaching procedure, the U.S. Geological Survey Field Leach Test (FLT), is a short-duration leach (5-minute shaking and 10-minute settling) and is intended to leach readily soluble materials. The FLT was immediately followed by an 18-hour, end-over-end rotation leaching procedure. Comparison of results from the back-to-back leaching procedures can provide information about reactions that may take place upon migration of leachates through changing geochemical conditions (for example, pH changes), both within the waste-rock and scar materials and away from the source materials.
Bibliography Includes bibliographic references (p. 45-49).
Subject Geochemistry -- New Mexico -- Questa.
Spoil banks -- Leaching -- New Mexico -- Questa.
Acid mine drainage -- New Mexico -- Questa.
Added Author Smith, Kathleen S.
Geological Survey (U.S.)
Added Title Leaching characteristics of composited materials from mine waste-rock piles and naturally altered areas near Questa, New Mexico
Other Form: Questa baseline and pre-mining ground-water quality investigation. 19, Leaching characteristics of composited materials from mine waste-rock piles and naturally altered areas near Questa, New Mexico vii, 49 p. (OCoLC)173480302
Gpo Item No. 0624-B-02 (online)
Sudoc No. I 19.42/4-4:2006-5165

 
    
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