Deposit Type
The Doyon-Bousquet-LaRonde(DBL) mining camp is one of Canada’s largest VMS districts (Mercier-Langevin, Dubé and Blanchet, et al. 2017). The mineralization on the Property has been well documented by various researchers and is recognized as comprised of world-class, gold-rich VMS deposits formed in a submarine back-arc basin or submarine arc crust. Like other VMS-type deposits, the LaRonde Complex’s lenses were formed mainly by sulphide precipitation from hydrothermal fluids on an Archean seafloor and by sulphide replacement in the footwall below the lenses.
Two deposits styles are recognized on the Property:
• Gold-rich base metal massive sulphide lenses (LaRonde Penna, Bousquet No. 2-Dumagami), which represent the exhalative part of a VMS-type system above the seafloor.
• Gold-rich vein stockworks and sulphide disseminations (Bousquet No. 1-LZ5 and Ellison); which represent the sub-seafloor stockwork and replacement-style VMS-type system (feeder zone) into permeable (i.e., fragmental) facies in volcanic rocks such as breccia, volcanic tuff, pyroclastic unit, etc.
Mineralization
Mineralization at the LaRonde Complex is hosted within the Archean volcanic and intrusive rocks of the Bousquet Formation (2,699 to 2,696 Ma) which is one of the youngest assemblages of the Blake River Group (2,703 to 2,694 Ma). Approximately 50 km to the west, the Blake River Group also hosts several world-class deposits in the Rou ........
