00000nam 2200000zi 4500 9.880610 CaOODSP 20241203113652 m o d f cr cn||||||||| 191015s2007 bcca ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-bc En40-240-1/07-02E-PDF Mayer, Karl Ulrich, author. Interpretation of geochemical tests of Huckleberry mine waste rock : speciation and reaction progress modeling of humidity cells HC-13, HC-14, and HC-1 / prepared for Environment Canada ; prepared by K. Ulrich Mayer. Vancouver, BC : Environment Canada, 1990. 1 online resource (107 pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier Regional program report ; 07-02 "Submitted to: Environment Canada, Environmental Stewardship Branch, Environmental Protection Operations, Pacific and Yukon." "November 15, 2007." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 19-21). "Six humidity cell kinetic tests containing waste rock from the Huckleberry Mine in northern British Columbia have been maintained for uniquely long times of up to twelve years. The rocks under investigation have a NP/AP ratio smaller than 1; however, some of the cells are still producing circum-neutral drainage, despite the long duration of the tests. The interpretation of the test data is complicated by the presence of gypsum at significant concentrations (> 1 wt%) and the initial application of sulfuric acid leaching to remove carbonate NP. The objectives of this work are to use kinetic reaction progress modeling to assess the geochemical activity of the pyritic altered volcanic waste rock from the Huckleberry Mine as presently under test, with particular regard to humidity cells HC-13, HC-14, and HC-1. The modeling results are used as a basis to explain, as far as possible, the humidity cells' leaching behaviour related to the initial chemistry and mineralogy of the rocks. In addition, a general discussion on using reactive transport modeling to assess the geochemical evolution in full-sized mine waste rock dumps is provided"--Executive summary, page i. Issued also in print format. Includes summaries in English and French. Copper mines and mining Waste disposal Environmental aspects British Columbia. Acid mine drainage Environmental aspects British Columbia. Chemical kinetics Computer simulation. Cuivre Mines et extraction Déchets Élimination Aspect de l'environnement Colombie-Britannique. Exhaure acide Aspect de l'environnement Colombie-Britannique. Cinétique chimique Simulation par ordinateur. Canada. Environment Canada. Regional program report (Canada. Environment Canada) 07-02. (CaOODSP)9.881335 PDF 1.81 MB https://publications.gc.ca/collections/collection_2019/eccc/en40-240-1/En40-240-1-07-02-eng.pdf