Bison Gold Updates its Central Manitoba Property: High grade results identified during surface mapping of Eldorado vein with assay results up to 162 g/t Au
TORONTO, ONTARIO– Bison Gold Resources Inc. (“Bison Gold” or the “Company”) (TSX VENTURE:BGE) is pleased to announce initial results from their summer exploration program on the Central Manitoba Property. The Central Manitoba Property is historically the 2nd largest producer in the prolific Rice Lake Greenstone Belt after San Gold Corp.’s Rice Lake Mining Operations. Detailed field mapping and sampling on the Eldorado, Growler, Rex/Walton and Kitchener zones have uncovered in-situ visible gold and sulphide mineralization associated with quartz veining in strongly altered and sheared host rocks. Grab samples collected at these sites returned assay values up to 162.6 g/t Au.
“We are extremely encouraged by the early results from our summer field program on the Central Manitoba Property,” stated David Benson P.Geo, V.P. Exploration for Bison Gold. “The emerging geological model for the Property clearly suggests a similar style and character to the gold-bearing structures as San Gold Corp.’s Rice Lake property. Further work employing modern exploration techniques is warranted for the entire Property, in particular the Eldorado and Rex/Walton zones.” Planning for follow-up exploration phases has commenced and will likely include an airborne LIDAR survey; establishment of exploration grids; multi-media geochemistry; surface IP/resistivity and magnetic surveys and diamond drilling.
The summer 2010 surface field program is designed to re-evaluate and characterize past-producing gold-bearing structures and identify possible new gold-bearing structures through a variety of exploration techniques and methodology. The results presented here represent the initial results from the re-evaluation and characterization of the Eldorado, Walton and the western portion of the past-producing Central Manitoba Mine (Growler and Kitchener zones).
The Eldorado zone is located in the westernmost portion of the Central Manitoba Property approximately 6 km west of the past-producing Central Manitoba Mine. The Eldorado zone is a 1220 m long shear in quartz diorite of the Ross River Pluton; the same rock unit that hosts the Ogama-Rockland zone approximately 2 km to the southeast. Historically development of the Eldorado zone included numerous pits and trenches, as well as two shafts. Shaft No. 1 was sunk to 159 m with levels at 38-, 76-, 114- and 153 m. A total of 1336 m of drifting and 92 m of crosscutting were completed but operations ceased at the end of 1928. Shaft No. 2, approximately 800 m to the northwest was sunk to a depth of 16.8 m. Commercial production was never attained from the Eldorado shafts. Visible gold was identified and sampled by Bison Gold field personnel from a quartz vein exposed in a historical trench adjacent Shaft No. 1.
The Rex/Walton zone is located in the west-central portion of the Property, approximately 2 km west of the past-producing Central Manitoba Mine. The zone is situated with a zone of sheared and fractured quartz diorite and has been traced at intervals over a distance of approximately 336 m. Originally staked in 1925, the area has been subject of numerous pits and trenches, limited diamond drilling and the sinking of a 40 m shaft to 1946. Little significant exploration or development has occurred since this date with the exception of a multi-media geochemical sampling program conducted by Placer Dome in 2003. Commercial production was never attained from the Rex/Walton shaft. Rock chip samples were collected by Bison Gold personnel in mineralized shear zones along the extent of the known mineralization.
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