Geology & Mineralization
he Westwood Project is part of the Doyon-Bousquet-LaRonde (DBL) mining camp. The project is located within the southern Abitibi Sub-Province, in Archaean volcanic and intrusive rocks of the Bousquet Formation (2701-2696 Ma). The DBL mining camp hosts two world class deposits: the Doyon and LaRonde-Penna mines and is by far the largest Au-Cu-Zn-Ag producing district in Québec.
The Westwood Project area is underlain by meta-volcanics of the Blake River Group and partly by meta-sediments of the Cadillac and Kewagama Groups. Stratigraphy generally strikes east-west (100-110°), dips steeply to moderately (70-80°) towards the south and is interpreted to have a southerly facing direction. The Mooshla intrusive, a synvolcanic differentiated pluton, intrudes the volcanics in the western part of the property. Gold bearing VMS and disseminated sulphide zones occurring in the eastern part of the claims are known as the Warrenmac and Westwood showings, respectively to the west and to the east of the Bousquet Fault. Rocks hosting the Warrenmac-Westwood mineralization are lithologically and geochemically similar to the host rocks of the main sulphide lenses at the LaRonde-Penna mine. The regional foliation strikes east-west, parallel to the stratigraphy, with dips varying from sub-vertical to 70° towards the south. Regional metamorphism is transitional from greenschist to lower amphibolites facies.
Mineralization observed in the DBL camp is mainly associated with units #4.2, #4.3, #4.4, #5.1, and #5.2 of the Bousquet Formation. These units host gold-rich VMS-type mineralization at the Bousquet and LaRonde, deposits and gold-sulphide vein-type mineralization in Zones 1 and 2 at Doyon.
Three distinct mineralized envelopes are identified in the Westwood area. The first two zones (Zone 2 Extension and North Corridor) consist of quartz – pyrite ± chalcopyrite ± sphalerite veins and veinlets within a matrix containing 2 to 10% disseminated pyrite. The vein systems are orientated 085-095°/60-70°S, which is slightly discordant to the regional foliation in both strike and dip. These zones are located within felsic volcanic units #4.3 and #4.4, and associated with a proximal sericite-pyrite-garnet alteration assemblage.
The third envelope delineates the Warrenmac-Westwood mineralized corridor, which is located at the same stratigraphic contact on each side of the Bousquet Fault. Both consist of gold-rich pyrite-sphalerite stringers or concentrations with local massive sulphide bands (5-20cm) and minor gold-bearing sulphide-rich quartz veins/veinlets, all enveloped by a disseminated pyrite-rich alteration halo. Occasional black quartz veins with chalcopyrite traces return gold values, but not systematically. East-west sub-horizontal quartz-tourmaline (pyrite) veins are also present but rarely anomalous in gold. The Federal Government is in the final stages of an important multidisciplinary study that aims to better understand the geological and hydrothermal evolution of the DBL camp. The goal is to determine whether the Westwood mineralized zones represent a transitional system and hydrothermal link between the syn-magmatic Au-Cu veins of the Doyon deposit to the west, and the volcanogenic sulphide veins, stockworks and disseminations of the Bousquet 1 mine to the east.