Wesdome’s, Mishi-Magnacon mine-mill complex is located 7.8-kilometers northwest of the Feather River-BayView property while the Mishi open pit is located 9.8-kilometers northwest of the property. Both the Magnacon mine and Mishi pit are located along the regional Mishibishu Deformation Zone. This arcuate zone, characterized by ductile-brittle deformation is closely associated to the contact of mafic volcanics to the north and volcano-sedimentary rocks to the south. Locally, at the Mishi and Magnacon mine the zone traverses intrusive rocks of quartz-feldspar porphyry to the north and a gabbro sill to the south. Gold mineralization at the Mishi and Magnacon mine occurs in lenses within zones of intense hydrothermal alteration in smoky quartz ± ankerite ± arsenopyrite ± pyrite ± galena ± chalcopyrite ± tourmaline veins (Reid et.al., 1991).
The Mishi-Magnacon complex hosts a published (December 31, 2010) reserve of 709,000 tonnes of proven and possible material grading 2.6 grams per tonne and a resource of 5,736,000 tonnes of measured and indicated material grading 2.4 grams per tonne.
Cautionary Note; The quantities and grades reported for the Mishi-Magnacon complex were sourced from the company’s corporate website. The authors have not been able to verify the information beyond that which is posted on the website.
The Northwest occurrence is located approximately 5.0-kilometers northwest of the Feather-BayView River property. The occurrence is hosted in chlorite-sericite-ankerite-quartz-green mica-pyrite schist. Gold mineralization is associated with quartz-ankerite veins containing pyrite, arsenopyrite, galena and chalcopyrite. The veins have assayed as high as 53.83 gpt from grab samples and 18.17 gpt /1.2-meters from a channel sample, (Westfield Minerals, 1984).
The Amichi showing is located approximately 4.0-kilometers northwest of the Feather River-BayView property. The showing is located in a subordinate deformation zone, south of the Mishibishu Deformation Zone. Gold mineralization occurs in quartz veins with minor amounts of galena and chalcopyrite in a sericite-chlorite schist with variable amounts of pyrite and green mica. Visible gold has been reported and assays up to 29.83 gpt/0.91-meters have been obtained from vein material, (Amichi Gold Mines, 1950).
The Hollinger showing, located approximately 1.5-kilometers northwest to the Feather River-BayView property was tested in 1937 by a drill campaign of 12-holes totalling 947-meters. Three of the holes were reported to have intersected well mineralized quartz veins with visible gold, but core samples returned low values, (Reid et. al., 1991). Grab and channel samples from quartz vein in trenches in the showing returned trace to 19.2 gpt/1.5-meters, (Reid et. al., 1991).
The Discovery occurrence is located 750-meters northwest of the Feather River-BayView property in a subsidiary shear. Sericite-green mica-chlorite schist hosts multiple quartz veins along a 120-meter strike length. Visible gold has been reported associated with highly friable strained quartz veins with crack and seal texture. Other sulphides associated with gold mineralization include galena, sphalerite, pyrite and chalcopyrite. Higher gold values correlate with higher galena and arsenopyrite content. Eight drill holes that tested the showing returned anomalous gold values, the highest being 520 ppb, (Westfield Minerals, 1985).
Gold Deposits and Showings Mishibishu Lake Area
To review the Feather River NI 43101 dated June 19, 2012 please click here.