 | Gloaguen, Eric, Branquet, Yannick, Boulvais, Philippe, Moëlo, Yves, Chauvel, Jean-Jacques, Chiappero, Pierre-Jacques, Marcoux, Eric (2007) Palaeozoic oolitic ironstone of the French Armorican Massif: a chemical and structural trap for orogenic base metal–As–Sb–Au mineralisation during Hercynian strike-slip deformation. Mineralium Deposita, 42 (4) 399-422 doi:10.1007/s00126-006-0120-4 | Journal (article/letter/editorial) | | the Saint-Aubin-des-Châteaux quarry (Armorican Hercynian belt, western France), an epigenetic hydrothermal...de Saint Amand, BP 6759, 45067 Orleans Cedex 2, France e-mail: e.gloaguen@brgm.fr P. Boulvais : J.-J....CNRS/Université de Rennes 1, 35042 Rennes Cedex, France Y. Moëlo Laboratoire de Chimie du Solide, Institut...la Houssinière, BP 32229, 44322 Nantes Cedex 3, France P.-J. Chiappero Département Histoire de la Terre...d’Histoire Naturelle, 61 rue Buffon, 75005 Paris, France Present address: E. Gloaguen BRGM, 3, avenue Claude-Guillemin |  | Möller, V., Klemd, R., Joachimski, M., Barton, J.M. (2014) Hydrothermal controls on iron and lead mineralization on the farms Leeuwbosch and Cornwall, Thabazimbi District, South Africa. Ore Geology Reviews, 63. 40-63 doi:10.1016/j.oregeorev.2014.04.009 | Journal (article/letter/editorial) | | Available online 25 April 2014 Keywords: Hematite Galena Leeuwbosch Thabazimbi Fluid inclusions Stable isotopes...neutralized and reduced the ore fluid to precipitate galena hosting Ag with chalcopyrite and sphalerite. Fluid...deposits which are dominated by veins of siderite, galena and sphalerite of probably magmatic origin (Southwood...District of South Africa host high-grade hydrothermal galena (Pb–Ag–Cu–Zn–Fe) and closely spatially associated...mineralization in which hypogene fluids precipitated galena upon fluid mixing, while the iron ore deposits were |  | | Journal (article/letter/editorial) | | mineral sulphides such as chalcopyrite (CuFeS2), galena (PbS) and sphalerite (ZnS) were also examined....nickel laterite ores (Hallberg et al., 2011; du Plessis et al., 2011). Further studies are required to..., Clin. Microbiol. Rev., 15, (2), 155–166. du Plessis, C. A., Slabbert, W., Hallberg, K. B. and Johnson...(4), 299–306. Hallberg, K. B., Grail, B. M., du Plessis, C. A. and Johnson, D. B. 2011. Reductive dissolution...Natarajan, K. A. 2000. Surface chemical studies on galena and sphalerite in the presence of thiobacillus |  | | Report (issue) | | 2% SiO2, 3.06% P2O5 (= 7.23% apatite) (P.G. du Plessis, !SCOR, pers. comm.). Second in importance, the...25% BaSO4, 4.19% P2O5 (= 9.93% apatite) (P.G. du Plessis, ISCOR, pers. comm.). 6 Body C is an irregular...6% SiO2, 0.51% P2O5 and 0.72% BaSO4) (P.G. du Plessis, !SCOR, pers. comm). Between 1953 and 1955 about...Crystals of green fluorite are intergrown with galena in a vein varying in width from 5 to 45 cm and...District, a lode containing barite, fluorite and galena with calcite cuts through a conglomeratic sandstone |  | | Journal (article/letter/editorial) | | Formation (e.g. Rhodes, 1975; Du Plessis, 1976; Rhodes and Du Plessis, 1976), overlain by an agglomerate...magnetite, haematite, chalcopyrite, arsenopyrite and galena. The intensity of mineratisation varies with the...chlorite, sphalerite, fayalite, pyrite, chalcopyrite, galena, magnetite, ilmenite and accessory molybdenite...Univ. Orange Free State, South Africa, 171pp Du Plessis, M.D. (1976) The Bushveld granites and associated...South Africa. Geol. 3 : 549 554. Rhodes, R.C., Du Plessis, M.D. (1976) Notes on some stratigraphic relations |  | | Journal (article/letter/editorial) | | hematite, pyrite, pyrrhotite, zircon, molybdenite and galena. SiO2 content varies between 64 and 67 wt%, Al2O3...(Vearncombe et al., 1987; Vearncombe, 1988; Du Plessis, 1990; Vearncombe et al., 1992; Poujol et al.,... Bismuth X Calcite X X X Clinochlore X Galena X Hematite X Lepidocrocite X Molybdenite...(such as zircon, scheelite, clinochlore, phenakite, galena and bismuth) are present and can be used SOUTH...of synthetic emeralds (Huong, 2008). Moreover, galena and bismuth are generally rarely included in emeralds |  | | Journal (article/letter/editorial) | | Thrust (BWT) (Figures 1 and 2; Du Plessis and Clendenin, 1988; Du Plessis, 1990). Duplication is accentuated...of earlier D2 structures along the BWT (e.g. Du Plessis and Clendenin, 1988). Notably, Martin (1990), observed...yielded by biotite Rb-Sr measurements, with related galena isotopic data. Earth and Planetary Science Letters...South African Journal of Geology, 109, 139–156. Du Plessis C.P., (1990). Tectonics along the Thabazimbi-Muchison...Unpublished Ph.D., Witwatersrand University, 307pp. Du Plessis, C.P. and Clendenin, C.W. (1988). The Bobbejaanwater |  | | Journal (article/letter/editorial) | | of Beaucouze, crossing the Maine to reach the Plessis by La Croix Verte. West of the Maine this band...d'avancement de la feuille geologique d'Angers. nat. O. France (1895), p. 13-16. E. RONDEAU. d'Angers (lg07)...and in an unexpected way the geological map of Brittany; it shows, moreover, what caution is needed in...probleme du Brioverien de Bretagne, CoR.S. Soc. geol. France, 2 mai (1927), pPo 102, 104. SUMMARY OF GEOLOGY...(1880). CAYEUX. Les mlnerais de fer oolithiques de France. I. minerais de fer primaires (1909),. P·I43-I7° |  | | Journal (article/letter/editorial) | | Council for Geoscience, Pretoria further north, galena in the Chuniespoort dolomites near Zeerust and...South Africa; E.S. Cheney, Washington; C.P. du Plessis, A.A.P.S., South Africa; H.V. Eales, Rhodes Univ |  | López Valdivieso, A, Celedón Cervantes, T, Song, S, Robledo Cabrera, A, Laskowski, J.S (2004) Dextrin as a non-toxic depressant for pyrite in flotation with xanthates as collector. Minerals Engineering, 17 (9). 1001-1006 doi:10.1016/j.mineng.2004.04.003 | Journal (article/letter/editorial) | | in alkaline environment whenever the content of galena in copper concentrate is too high. Its use along...chalcopyrite can be depressed by dextrine while galena can be floated with ethyl xanthate; whereas in alkaline...alkaline solutions chalcopyrite is floated while galena is depressed. They have used dextrin to selectively...surfaces in dextrin adsorption, II. Chalcopyrite-galena separations in the presence of dextrin. International...Santiago, Chile, pp. 283–297. Miller, J.D., Du Plessis, R., Kotylar, D.G., Zhu, X., Simmons, G.L., 2002 |  | | Journal (article/letter/editorial) | | Experiment 1: The sample consists of 7 grains, two of galena (PbS), two of microporous ceria (CeO2 ), two of...plastic tube with 15 mm diameter. The grains of galena, barite and parasite are from natural sources and...energy interval of one energy bin, 1.1 keV. The two galena particles are clearly the most attenuating and...attenuation than lead sulphides, such as boulangerite and galena, the grey-scale range representthethese K-edge...attenuation thanThe lead sulphides, such as boulangerite galena, the grey-scale range representing spectral techniques |  | | Journal (article/letter/editorial) | | pyrite, galena and chalcopyrite. critical with xanthate concentration forminerals pyrite, galena andsufficiently...allows for selective flotation of chalcopyrite from galena and pyritecollector as gaconcentration allows forenough...and pyrite galena lena is not hydrophobic float (region B), and for selective of as galena is not hydrophobic...hydrophobic enough to float (region and for selective galena from from pyrite, but no selectivity between galenaB)...collectorconcentration concentrationfor for pyrite, pyrite, galena galena and chalcopyFigure 1. 1. Critical pH chalcopyrite |  | | Journal (article/letter/editorial) | | that surface oxidation of the copper minerals and galena was higher in Ore B (Table 2). Batch scale flotation... chalcopyrite, sphalerite, and minor amount of galena. The Ore B sample contained significant amounts...Pyrite/Marcasite 90.72 89.59 85.52 66.83 56.71 40.75 Galena <0.01 <0.01 <0.01 0.67 0.94 0.37 Barite...Binary Association Free Pyrite Sphalerite Barite Galena Quartz Ore A/+38 µm 80.53 17.80 0.21 0.17...Pyrite Binary Association Free Sphalerite Barite Galena Chalcopyite Quartz Aggregates Ore A/+38 µm |  | | Journal (article/letter/editorial) | | Mineralisation consists mainly of sphalerite, pyrite, galena and chalcopyrite within mudstone, with interbedded...Stratigraphy of the Port Nolloth Group of the Gariep Belt galena as a final product while sodium cyanide is used...collected by a xanthate collector. The unrecovered galena, together with the pyrite is depressed by adding...hematite and goethite. Pseudomorph textures are after galena and carbonate. Analyses of some gossans (Andrew...comprises mainly sphalerite and pyrite, with lesser galena and chalcopyrite. Minor bornite, tennantite-tetrahedrite |  | | Journal (article/letter/editorial) | | indicators Eight disturbed samples were sent to BM du Plessis Civil Engineering labs for grading and Atterberg...within the underground mine was highly fissured with galena (PbS) being present in the fissures. Therefore the...crumble along primary and secondary features. The Galena present in the fissures of the Bokkraal sample caused...locations that the wad may be highly fissured with galena, and possibly other ore, therefore special care |  | | Journal (article/letter/editorial) | | bornite, chalcocite-digenite, covellite sphalerite, galena Associated Non-Economic Minerals and Polluting...Chermak, J.A.; Gagen, P.M. Rates of Reaction of Galena, Spalerite, Chalcopyrite, and Asenopyrite with...2001, 65, 1367–1379. Hallberg, K.B.; Grail, B.M.; Plessis, C.A.D.; Johnson, D.B. Reductive dissolution of...Environ. Sci. Technol. 2013, 47, 6129–6136. Du Plessis, C.A.; Slabbert, W.; Hallberg, K.B.; Johnson, D |  | | Journal (article/letter/editorial) | | such high X-ray attenuation coefficients include galena, barite and native silver; however, none of these...X-ray attenuation coefficients such as barite, galena, etc.). Opportunities to develop other computed...124, 102702. [CrossRef] [PubMed] Le Roux, S.; Du Plessis, A.; Rozendaal, A. The quantitative analysis of...Laboratory: Johannesburg, South Africa, 2013. Du Plessis, A.; Le Roux, S.; Guelpa, A. The CT Scanner Facility |  | Kržanović, , Conić, , Bugarin, , Jovanović, , Božić, (2019) Maximizing Economic Performance in the Mining Industry by Applying Bioleaching Technology for Extraction of Polymetallic Mineral Deposits. Minerals, 9 (7) 400 doi:10.3390/min9070400 | Journal (article/letter/editorial) | | (CuFeS 2), galena (PbS), mostly consists of sphalerite (ZnS), chalcopyrite (CuFeS2 ), galena (PbS), and...the concentrate where p—pyrite; s—sphalerite; g—galena Figure 1. X-ray diffraction pattern of the concentrate...concentrate where p—pyrite; s—sphalerite; g—galena and and c—chalcopyrite. c—chalcopyrite. 2.4. Microbiological... 30, 24–31. [CrossRef] Rawlings, E.; Dew, D.; Plessis, C. Biomineralization of metal-containing ores |  | | Book | | Geology in France and Related Areas (1994) J. D. Keppie (Ed.) Pre-Mesozoic Geology in France and Related...Cataloging-in-Publication Data. Pre-Mesozoic geology in France and related areas / J. D. Keppie (ed.). p.cm.Developed...2. Geology, Stratigraphic-Paleozoic. 3. Geology-France.!. Keppie, J. Duncan. II. IGCP Project 233-Terranes...comprehensive account of the PreMesozoic Geology of France (Armorican and Central Massifs) and related areas...the international copference held in Montpellier, France, in August, 1988, where a vast amount of new information |  | | Journal (article/letter/editorial) | | 143–156. [CrossRef] Zanin, M.; Lambert, H.; du Plessis, C.A. Lime use and functionality in sulphide mineral...Effect of calcium and sulphate ions on flotation of galena. Miner. Eng. 2012, 39, 77–88. [CrossRef] Bidari...and oxidation with a floatability difference of galena and pyrite in high-alkaline lime systems. Langmuir...on the flotation separation of chalcopyrite from galena using dextrin. Miner. Eng. 2000, 13, 1405–1416 |  | | Book | | 364 and Diergaarcls Aub 454 Groenclraai 367 Du Plessis Rus 537 Neuras 330 Swartskaap 332 2.8 2.3-1 ...prospect Doornpoort For111atio11 Rehoboth District Du Plessis Rus 537 Kojeka 376 Windhoek District Klein Aub...about I O111. The only hole drilled at this of galena. chalcocite and native gold appear to be conprospect...have been reponed to cany 68.5 g/t gold. whereas galena concentrates contained 685 g/t gold. Numerous trenches...clinobisvanite, the newly named mineral namibite, galena, scheelite, cupro1ungsti1e, iodagyrite and embolite |  | Manono, Malibongwe S., Matibidi, Katlego, Otunniyi, Iyiola O., Thubakgale, Catherine K., Corin, Kirsten C., Wiese, Jenny G. (2020) The Behaviour of Mixtures of Sodium Iso-Butyl Xanthate and Sodium Di-Ethyl Dithiophosphate during the Flotation of a Cu-Ni-Pt Ore in Degrading Water Quality. Minerals, 10 (2) 123 doi:10.3390/min10020123 | Journal (article/letter/editorial) | | Determination of optimum parameters for flotation of galena: effect of chain length and chain structure of...[CrossRef] [PubMed] Zanin, M.; Lambert, H.; du Plessis, C.A. Lime use and functionality in sulphide mineral...collector mixtures on the flotation of pyrite and galena. Miner. Eng. 2013, 50–51, 121–129. [CrossRef] Corin |  | | Journal (article/letter/editorial) | | Bever Donker, 1980; van Zyl, 1981; Stowe, 1983; du Plessis, 1986; Humphreys and Cornell, 1989; Cornell et... 1976) or both early and late syntectonic (du Plessis, 1986; Colliston and Schoch, 2000) mafic and ultramafic...(Cornell et al., 2009). The Pb-Pb model age of galena from the exhalative Hotson sulphide deposits of...Donker, 1980; van 437 Zyl, 1981; Stowe, 1983; du Plessis, 1986; Humphreys and Cornell, 1989; Cornell et...2007a; Cornell et al., 2009). Pb-Pb model ages of galena from the Hotson Formation massive sulphides deposits |  | | Journal (article/letter/editorial) | | ore that contained chalcopyrite, sphalerite and galena. A depth profile of bacterial presence and activity...Czech Republic Pyrenées, France Eastern Pyrenées, France Dauphiné Basin, France Selwyn Basin, YT, Canada...Pyrite (enriched with nickel and cobalt), marcasite, galena (enriched with silver), sphalerite and native Ag...in solutions was attributed to the oxidation of galena followed by the precipitation of PbSO4 in the residues...Bureau de Recherches Géologiques et Minières (BRGM), France, bioleach tanks on site were inoculated in 1998 |  | | Book | | billion tons. Other countries, such as Australia and France and doubtless the U.S.S.R., likewise established... 1,834 g (Meen, 1948) (Fig. 2.1); Rock Landing Quarry, Hadclam Neck, Conn., 6 X 7 X 10 cn1, 1,200 g (Ingerson...Botryoidal pitchblende, St. Priest vein, Forez, France ( X l) ( Geffroy and Sarcia, 1954). 29 ~ ~ ...pitchblende, St.Remy-Stll'-Durolle, Forez Mts., France. Pyrite crystals (white) on 1ight; in quartz (...fractLU"es in spherulite of pitchblende, filled by galena (white ) and quartz (black) which also replaces |
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