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Geologic Setting of the Meadowbank Iron Fonnation-Hosted Gold Deposits
Published in Hans Kristian Olsen, Lida Lorentzen, Ole Rendal, Mining in the Arctic, 2020
R. L. Sherlock, R. B. Alexander, R. March, J. Kellner, W. A. Barclay
Armitage et al. (1996), based on whole rock and mineral chemistry, has shown that auriferous iron formations are characterized by a mineral assemblage of cummingtonite and biotite with pyrrhotitepyrite-magnetite and quartz. Barren, but sulphidic, iron formations are characterized by an assemblage of grunerite ± hornblende + stilpnomelane with pyrrhotite, pyrite, quartz and magnetite. Whereas barren, non sulfide-bearing, iron formations are characterized by quartz and magnetite. Based on these mineral assemblages and their relationship to gold mineralization, Armitage et al. (1996) have suggested that mineralization is related to metasomatic fluids that have altered the iron formation with the introduction of Mg-K-Ca-S-As-Cu and Au during D1-D2 deformation.
Preparation of inorganic binder-stabilised material with iron tailings: strength formation and gradation optimisation
Published in Road Materials and Pavement Design, 2023
Huining Xu, Weidong Ji, Weiqiang Jiang, Honghai Cui, Yiqiu Tan
Iron tailings used in this study are collected from Jilin Province, China. The X-ray diffraction (XRD, X′Pert PW3040, PANalytical B.V., the Netherlands) pattern of the iron tailings is shown in Figure 2. The chemical composition of iron tailings is shown in Table 1 which used the X-ray fluorescence (XRF, PW4400, PANalytical B.V., the Netherlands). The mineral composition of iron tailings is dominated by quartz, followed by grunerite. The maximum content of SiO2 of 41.57% is classified as low-silica iron tailings. The particle size distribution curve shown in Figure 3 indicated that the samples are fine-grained iron tailings. The concentrations of Cr, Zn and Cu are 14, 10 and 5 mg/L, respectively, during precipitation meet the requirements for toxic chemical components set by the Chinese Standard GB 5085.3-2007. Therefore, iron tailings can be used as a component in pavement engineering.