The Rouyn-Noranda Mining Camp
Published:January 01, 1991
The objective of the Rouyn-Noranda mining camp field trip is to give the participants an overview of the main lithologies and structures observed in the Blake River Group, which make up the geological environment of Cu, Zn, Au and Ag mineralizations, and also of the mineralizations themselves.
Day three of the field trip will allow the participants to be acquainted with the volcanic rocks of the Blake River Group, mainly composed of basalts and rhyolites; the participants will also visit the main tectonic features, the Cadillac-Larder Lake and the Porcupine-Destor tectonic zone. The surface field trip includes the Central Mine Sequence in which most of the massive sulphide deposits have been found; the participants will be able to see mineralizations in their typical volcanic environments.
On day four, a choice of two gold mines is scheduled in the morning, followed, in the afternoon, by a surface field trip on a mine site in a tectonic zone.
On day five, the field trip will conclude with a choice of two mine visits in volcanogenic massive sulphide deposits.
Figures & Tables
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.