The Pierre Beauchemin Gold Mine
Published:January 01, 1991
M. Richard, C. Hubert, A. C. Brown, R. Sirois, 1991. "The Pierre Beauchemin Gold Mine", Control on Base Metal and Gold Mineralizations, Bousquet—Rouyn-Noranda Area, G. Tourigny, P. Verpaelst
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The Pierre Beauchemin gold mine is located in the Flavrian pluton 15 km northwest of Rouyn-Noranda. In 1955, Eldrich Mines Ltd. sunk a 325 m shaft and developed 7 levels of drifts; reserves defined at that time included 589 670 tonnes grading 6.9 g/t Au. The Eldrich mine operated from 1955 to 1962, and shipped a total of 651 045 tonnes of flux-type ore (65 to 67% Si02) grading 4.78 g/t Au (a total of 3.1 tonnes of gold). to the Noranda smelter. In 1987, Cambior Inc. became the owner and operator of the newly named Pierre Beauchemin gold mine and adjacent claims. Workings are presently being developed to a depth of approximately 1900 feet (11 levels). The mine began production in August 1988, and has produced an average of 1050 tonnes/day. Present reserves are 1.2 Mt grading 5.6 g/t Au.
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Control on Base Metal and Gold Mineralizations, Bousquet—Rouyn-Noranda Area*
The Archean Abitibi belt is one of the largest and most studied greenstone terranes in the world. This is due not only to its precious and base meta 1 production, but also to its excellent bedrock exposure which permits observation of many Archean geological features in the south part of the belt lying between Rouyn-Noranda and Val d'Or.
The main objective of the regional field trips and the mine visits is to present the rna in stratigraphic, st ructura 1 and ore characteristics of the southern part of the Abitibi Belt. This regional field trip is scheduled to cover the Rouyn-Noranda and Cadi 11 ac-Bousquet mining camps. Operating mines will also be visited: Francoeur, Pierre-Beauchemin, Ansil, Mobrun, Doyon and Bousquet. The delegates will be able to examine the main volcanic, plutonic and sedimentary rocks as well as the various structural features in this part of the Abitibi. Ore deposits will include both massive sulphide and gold deposits. The various geological and structural environments of these deposits will also be examined.
The southern part of the Abitibi Belt in Quebec is dominated by a prominent deformation corridor, the Cadillac-Larder Lake Fault Zone. This zone is oriented E-W and separates a volcanic domain in the north from an essentially sedimentary domain in the south. This sedimentary domain, comprising clastic rocks and various granitic complexes, belongs to the Pontiac Subprovince. The volcanic domain is composed of various “blocks” of volcanic assemblages intruded by granitic masses, separated from one another by fault zones, discordances and inear sedimentary units. On the regional scale, the imbricated volcanic “blocks” are lozenge-shaped, with E-W orientd long axes. In most cases, the relationships between these volcanic and sedimentary “blocks” remain ambiguous.