Geology of the World’s Major Gold Deposits and Provinces

Chapter 14: The Brucejack Au-Ag Deposit, Northwest British Columbia, Canada: Multistage Porphyry to Epithermal Alteration, Mineralization, and Deposit Formation in an Island-Arc Setting
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Published:January 01, 2020
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CiteCitation
Warwick S. Board, Duncan F. McLeish, Charles J. Greig, Octavia E. Bath, Joel E. Ashburner, Travis Murphy, Richard M. Friedman, 2020. "Chapter 14: The Brucejack Au-Ag Deposit, Northwest British Columbia, Canada: Multistage Porphyry to Epithermal Alteration, Mineralization, and Deposit Formation in an Island-Arc Setting", Geology of the World’s Major Gold Deposits and Provinces, Richard H. Sillitoe, Richard J. Goldfarb, François Robert, Stuart F. Simmons
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Abstract
The Brucejack intermediate-sulfidation epithermal Au-Ag deposit, located 65 km north of Stewart, BC, forms part of a well-mineralized, structurally controlled, north-south gossanous trend associated with Early Jurassic intrusions straddling the Late Triassic-Early Jurassic Stuhini-Hazelton Group unconformity in the Sulphurets mineral district. Mining of the deposit commenced in mid-2017 after a long history of exploration dating back to the 1880s. Mineralization is hosted in deformed Lower Jurassic island-arc volcanic rocks of the Hazelton Group exposed on the eastern limb of the Cretaceous McTagg anticlinorium. High-grade Au-Ag mineralization was formed from ~184 to 183 Ma in association with a telescoped, multipulsed...
- British Columbia
- Canada
- carbonate rocks
- Cretaceous
- epithermal processes
- gold ores
- hydrothermal alteration
- igneous rocks
- island arcs
- Jurassic
- Lower Jurassic
- Mesozoic
- metal ores
- metasomatism
- mineral deposits, genesis
- porphyry
- sedimentary rocks
- silver ores
- sulfides
- volcanic rocks
- Western Canada
- Stewart British Columbia
- McTagg Anticlinorium
- Brucejack Deposit