Publication Type:

Journal Article

Authors:

Gibson, H. L.; Watkinson, D. H.; Watkins, J. J.; Labrie, M.; Doiron, G.

Source:

Exploration and Mining Geology, Pergamon Press [for the] Geological Society of the Canadian Institute of Mining, Metallurgy and Petroleum, New York - Oxford, International, Volume 2, Number 1, p.1-16 (1993)

ISBN:

0964-1823

Keywords:

breccia, Canada, clastic rocks, copper ores, eastern canada, Hydrothermal alteration, hydrothermal processes, igneous rocks, metal ores, metasomatism, mineral deposits, genesis, Noranda Quebec, quebec, Sedimentary rocks, sulfides, volcanic rocks, zinc ores

Abstract:

This is one of 17 proximal massive sulphide deposits situated within the Noranda cauldron in the core of the Noranda volcanic complex. It is located at the top of the Flavrian formation, the lowermost of the 3000 m thick Mine sequence. The deposit has yielded 2.75 M t of ore grading 3% Cu, 0.96% Zn, 2.06 g/t Ag and 1.0 g/t Au. The multi-lens Corbet deposit formed within a 250 m wide crater within a localized breccia pile which was constructed by explosive magmatic and hydrovolcanic eruptions localized along the S flank of alarger andesitic shield volcano that formed during the waning stages of Flavrian volcanism. The breccia footwall of the deposit allowed unfocused and widespread hydrothermal discharge that resulted in the development of a large area of chlorite and fringing sericite alteration that is six times the size of the sulphide lenses and represents a significant exploration target.

Notes:

GeoRef, Copyright 2018, American Geological Institute.<br/>1993-022566<br/>Corbet Deposit<br/>Flavrian Formation<br/>Noranda Volcanic Complex