00000nam 2200000za 4500 9.864770 CaOODSP 20221107161633 cr ||||||||||| 181116t19881989oncao #ob f000 0 eng 0660131226 CaOODSP eng eng fre n-cn-sn M38-13/88-6E-PDF M38-13/88-6E Petruk, W., 1930- Mineralogical and image analysis study of artificially weathered tailings from the Midwest uranium ore in Saskatchewan [electronic resource] / W. Petruk and R.G. Pinard. Ottawa : Mineral Sciences Laboratories, 1988, c1989. vi, 21 p. : ill., photographs CANMET report ; CM88-6E "February 1988." Title from cover. Issued also in French under title: Étude minéralogique et par analyse d'image de résidus ayant subi une météorisation artificielle et provenant du minerai d'uranium du Midwest de la Saskatchewan. Includes bibliographical references. "A mineralogical and image analysis study was conducted on samples of U tailings from pilot-plant runs on Midwest ore in Northern Saskatchewan. The tailings had been subjected to simulated weathering for the equivalent of 10 years in a tailings facility (lysimeter); the pH varied from 7.0 at the beginning of the test to 5.9 at the end. The results show that during the simulated weathering some of the gersdorffite, uraninite, galena and pyrite had oxidized, with gersdorffite being the most reactive and pyrite the least. Reaction was evident at the top of the lysimeter, but was most intense at the seepage discharge. Some of the released ions precipitated as Ni, Pb, and U arsenates, sulpharsenates, sulphates and oxides on particles of all minerals. Green crystals of Ni sulphate and white crystals of Ca sulphate had precipitated at the surface of the lysimeter. Clay minerals and chlorite had washed from the top of the lysimeter towards the seepage discharge"--Abstract, p. i. Includes abstract in French. gccst Minerals gccst Chemistry gccst Scientific research Pinard, R. Canada. Natural Resources Canada. Canada Centre for Mineral and Energy Technology. Mineral Sciences Laboratories (Canada) Étude minéralogique et par analyse d'image de résidus ayant subi une météorisation artificielle et provenant du minerai d'uranium du Midwest de la Saskatchewan (CaOODSP)9.864772 CANMET report ; CM88-6E. (CaOODSP)9.852792 PDF 2.02 MB https://publications.gc.ca/collections/collection_2018/rncan-nrcan/m38-13/M38-13-88-6-eng.pdf