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GOLD EMPLACEMENT AND HYDROTHERMAL ALTERATION IN METABASIC ROCKS AT THE MOUSKA MINE, BOUSQUET DISTRICT, ABITIBI, QUEBEC, CANADA
Fluid-rock reactions and resulting change in rheological behavior of a composite granitoid: the Archean Mooshla stock, Canada
Structural evolution and early accretion of the Archean Malartic Composite Block, southern Abitibi greenstone belt, Quebec, Canada
Integrated geophysical interpretation of crustal structures in the northern Abitibi belt: constraints from seismic amplitude analysis
Geology and structure of a sulfide-rich gold deposit; an example from the Mouska gold mine, Bousquet District, Canada
Seismic reflection constraints from Lithoprobe line 29 on the upper crustal structure of the northern Abitibi greenstone belt
Crustal velocity models for the Archean Abitibi greenstone belt from seismic refraction data
Seismic reflection profiles across the "Mine Series" in the Noranda camp of the Abitibi belt, eastern Canada
Accretion of Archean oceanic plateau fragments in the Abitibi, greenstone belt, Canada
The application of reflection seismology to the investigation of the geometry of near-surface units and faults in the Blake River Group, Abitibi Belt, Quebec
Abstract The Bousquet m1n1ng district (the Doyon, Bousquet and Dumagami Mines) is located in the southern part of the Abitibi greenstone belt of Quebec, 55 km east of Rouyn-Noranda (see index map on Fig.1). Eight lenticular auriferous pyrite bands have been delineated on the Bousquet property (Fig.2); they are either associated with mafic and felsic volcaniclastic rocks (zones 1, 2, 3, 3.1, 4, 4.1 and 5) or mafic lava flows intercalated with sericite schists and felsic tuffs (zone 6) (Valliant, 1981). Three zones are presently in production {1, 3 and 5) and two others (3.1 and 4) are at the mine development stage. Since 1979, three million tons of ore grading 0,2 oz Aujt have been produced and reserves are estimated to be over thirteen million tons. The gold mineralization and the pyrite lenses are intimately associated with the highly strained segments of the Blake River volcanic rock pile of this area. In the southern part of the group, the stratigraphic relationship among the various lithologies are obliterated or obscured and a penetrative tectonic fabric prevails throughout. The objectives of this excursion on the Bousquet property are to examine the geological setting of these gold-bearing pyrite lenses and look at some of the brittle and ductile structures that have been mapped on the property by the first author during the summers of 1984 and 1985.
Geology of the Cadillac Tectonic zone
Abstract The Cadillac fault is generally thought to be coincident with a highly schistose zone, a few tens of meters thick, composed of chlorite-carbonate and talc-chlorite-carbonate schists (Gunning and Ambrose, 1940; Norman, 1946). However, outcrops on the Orenada zone noo2 property indicate that deformation related to the Cadillac fault has affected different rock types over a width of more than 200 m. It is therefore more appropriate to refer to the Cadi11ac tectonic zone (CTZ) than to the Cadi11ac fau1t. This outcrop zone exposes a lithological succession that can be extended using outcrops and drill hole data for more than 10 km. This succession differs from the one presented on the available compilation maps and has important implications for the regional “stratigraphy”.