... lithologic variations in the Selbaie district. Five facies are distinguished in a vast sodium-depleted zone, from the core to the periphery of the hydrothermal system: chlorite–pyrophyllite in the mineralized zones, chlorite–sericite, sericite, sericite–orthoclase and orthoclase at the periphery...

... samples directly associated with VMS deposits. C. External North Volcanic zone area: gray envelope includes samples R-23, R-25, R-26, R-28 to -31, R-42, and R-43. D. Selbaie district. E. Hunter district: gray envelope includes samples R-55 to -66, excluding R-61 away from VMS. F. Hunter district: plots...

... N /Yb N = 1-4: Noranda camp (excluding the Horne deposit) and Val d'Or camp). Group III is host to only one known deposit, the Selbaie mine, which is unusual in that much of its mineralization cuts stratigraphy. The Selbaie mine sequence contains calc-alkalic andesite-rhyolite with relatively low...

...Fig. 1. Geology of the Abitibi greenstone belt (after Goodwin and Ridler, 1970 ), location of the Harricana-Turgeon belt (Fig. 2 ) and Selbaie mining district (after Lacroix et al., 1990 ). ...

..., and Selbaie). Systematic compressional wave velocity and density measurements in deep boreholes have established that lithological contacts were the main impedance contrast imaged, although reflections from faults and deformation zones have also been observed. The strongest reflections are attributed to mafic...

... subprovince of Quebec and Ontario, the world-class Sudbury Ni–Cu mining district, the Buchans mine in Newfoundland, and the Thompson Ni belt in Manitoba. This work, undertaken in close cooperation with the Geological Survey of Canada and major Canadian mining companies, stimulated an intensive and broadened...

... of the Superior province, Canada (Kidd Creek, Kamiskotia, Geco, Winston Lake, Mattabi, Lyon Lake, Noranda, Selbaie, and South Bay) plot in the within-plate volcanic zone field. The discriminant diagrams demonstrate that although the chemical character of rhyolites has not changed significantly since the Archean...

... Nakamura (1974) . Mesozoic deposits: s = Hokuroko district ( Dudas et al., 1983 ), u = Eskay Creek ( Barrett and Sherlock, 1996a ), : = Seneca ( McKinley et al., 1996 ), e = Murgul ( Schneider et al., 1988 ), ∇ = Shasta district ( Bence and Taylor, 1985 ; LaPierre et al., 1985 ). Paleozoic deposits: s...

...., 1994 ), Manitouwadge ( Roberts et al., 2003 ), Matagami ( Milkereit et al., 1992a ; Adam et al., 1996 , 1998 , 2003 ; Calvert and Li, 1999 ), Noranda ( Adam et al., 1992 ; Verpaelst et al., 1995 ; Perron and Calvert, 1998 ), Selbaie ( Milkereit et al., 1992b ; Perron et al., 1997 ), Sudbury...

... formed at the VMS-epithermal transition (e.g., LaRonde Penna: Dubé et al., 2007 ; Selbaie: Larson and Hutchinson, 1993 ; Géant Dormant: Gaboury and Daigneault, 1999 ; Chevrier: Legault and Daigneault, 2006 ) suggests, however, that a reconsideration of this VMS paradigm may be needed. Recognition...

... geometries from ice-melt, mining, and volcanic subsidence : Bulletin of Volcanology , v. 57 p. 303 - 318 . Cathles , L.M. , 1993 , Oxygen isotope alteration in the Noranda mining district, Abitibi greenstone belt, Quebec : Economic Geology , v. 88 p. 1483 - 1511 . Elston , W.E...

... describes the synvolcanic Mooshla Intrusive Complex and its association with a number of overlapping mineralizing events within the Archean world-class Doyon-Bousquet-LaRonde mining camp ( Fig. 1 ). The various types of deposits hosted within the mining district are known to contain in excess of 28 million...

... in the Bathurst mining district in New Brunswick, Canada ( Figure 1 ). The shallow part of the deposit was discovered by Middle River Mining Co. (Texas Gulf Sulphur Co.) in 1955 as a result of follow-up work on coincident EM airborne and soil geochemical anomalies ( Thomas et al., 2000 ). The deposit is part...

... al., 2000 ; Legault et al., 2002 ); the Brouillan-Fénelon Group on the flank of the Brouillan pluton in the area of the Selbaie mines ( Barrie and Krogh, 1996 ), the Waconichi Formation and the Lac Doré Complex in the Chibougamau area ( Mortensen, 1993b ); the Chanceux Formation (Lac Hébert area...

.... Salisbury M. H. , eds., Hardrock seismic exploration : SEG, 229 – 246 . Adam E. Perron G. Milkereit B. Wu J. Calvert A. J. Salisbury M. Verpaelst P. Dion D. J. , 2000 , A review of high-resolution seismic profiling across the Sudbury, Selbaie, Noranda, and Matagami...

.... 16 ). If one considers the felsic rocks of the Kudz Ze Kayah unit and the rocks of the footwall to the Wolverine deposit to be the VHMS-hosting felsic rocks (prospective) in the Finlayson Lake district, then these rocks partly overlap the FII and FIIIa fields of Lesher et al. (1986) and the Selbaie...

...–Pt mineralization (jacutinga), Itabira District, Minas Gerais, Brazil— R. Kwitko, A.R. Cabral, B. Lehmann, J.H.G. Laflamme, L.J. Cabri, A.J. Criddle, and H.F. Galbiatti 711 Cobaltarthurite, Co 2+ Fe 3+ 2 (AsO 4 ) 2 (OH) 2 •4H 2 O, a new member of the arthurite group— J.L. Jambor, J. Viñals...