Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
The Canadian Mineralogist Email Content Delivery
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
The Canadian Mineralogist; August 2005; v. 43; no. 4; p. 1183-1192; DOI: 10.2113/gscanmin.43.4.1183
© 2005 Mineralogical Association of Canada
This Article
Right arrow Résumé
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Weber, P. A.
Right arrow Articles by Smart, R. St.C.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Articles

A METHODOLOGY TO DETERMINE THE ACID-NEUTRALIZATION CAPACITY OF ROCK SAMPLES

Paul A. Weber§, Joan E. Thomas, William M. Skinner and Roger St.C. Smart

Ian Wark Research Institute, University of South Australia, Adelaide 5095, Australia

Chemical calculations based on the molar quantity of neutralizing cations (Na, K, Mg, Ca, Mn) released to solution associated with the acidic dissolution of minerals provide a method to chemically quantify the acid-neutralization capacity (ANC) of carbonates, silicates, simple assemblages of mixed minerals, and waste-rock samples obtained from international mining operations. The acidity neutralized by each cation is equivalent to its valence within the mineral structure. Fe and Al are hydrolyzed during the ANC back-titration and thus are effectively non-acid-neutralizing cations. Sulfur derived from pyrite oxidation is equivalent to the release of two moles of H+, although non-acid-forming S (e.g., gypsum) should be addressed. Calculations based on these principles for the samples tested correlate well with the ANC determined by titration-type tests.

Keywords: acid-rock drainage, acid-neutralization capacity, Modified Sobek ANC test.




This article has been cited by other articles:


Home page
 Can MineralHome page
P. A. Weber, J. E. Thomas, W. M. Skinner, and R. St.C. Smart
CALCULATED ACID BASE BALANCE FOR H2O2 OXIDATION OF CARBONATE-POOR PYRITIC MINE-ROCK
Can Mineral, August 1, 2005; 43(4): 1193 - 1203.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2009 by Mineralogical Association of Canada