Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000002349

Record: MDI000000002349

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Elmhirst

Latitude: 49° 49' 2.1"    Longitude: -87° 40' 4.97"

UTM Zone: 16    Easting: 451942   Northing: 5518525.99    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E13SE

Point Location Description: 2010 NI 43-101

Location Method: Data Compilation

Exploration History

2006: Kodiak Exploration Ltd. acquired the property and carried out line cutting, ground magnetic and IP geophysical surveys, trenching, mapping, sampling, and drilled 20 DDH totalling 1,487 m on the Wilkinson Lake-Yellow Brick Road system. 2007: Kodiak carried out prospecting which led to the discovery of the Golden Mile zone and other vein systems, ground and airborne geophysical surveys, trench mapping, channel sampling, and diamond drilling. 2008: Kodiak carried out metallurgical testing, trenching, sampling, and drilled 243 DDH totalling 66,195 m (mainly on the Golden Mile system). The 2008 drill program led to the discovery of the Lucky Strike zone. 2009: Kodiak drilled 75 DDH totalling 17,266 m throughout the project area. 2010: Kodiak was renamed to Prodigy Gold Inc. and carried out stripping, mapping, sampling, and drilled 90 DDH totalling 15,581 m throughout the project area.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Beardmore-Geraldton

Geological Age: Archean  

Lithology

Lithology Comments

Oct 16, 2019 (Therese Pettigrew) - Golden Mile, Marino, Yellow Brick Road and most of the other shear-hosted quartz veins discovered to date on the Hercules property occur wholly within the Elmhirst Lake intrusion, where they are associated with northwest-trending highly sheared dark green mafic dikes that are sometimes feldspar porphyritic, sometimes accompanied by anastomosing or cross-cutting felsic dikes. The host granodiorite is generally carbonatized and silicified adjacent to the gold-bearing veins, and in the veins the visible gold tends to be spatially associated with sercite, fuchsite, chlorite, pyrite, and locally chalcopyrite, galena.

Mineralization

Mineralization Comments

Oct 16, 2019 (Therese Pettigrew) - The Golden Mile vein system has a west-northwesterly strike dipping 70° to the southwest and is a massive gold-bearing system with a strike extent of at least 1.8 km which remains open along strike and at depth. All drill holes to date have reported intersecting gold mineralization. The exposed length of 1.8 km of quartz veining is nearly contiguous, averaging 1-3 m in width. Visible gold can be seen on the surface as well as in drill core and is commonly associated with chloritic partings. The veining is commonly associated with northwest-trending highly sheared dark green mafic dikes that are sometimes feldspar porphyritic. Silicification and hematite alteration of wall rock is common, as well as sericite alteration of plagioclase, and chlorite alteration of mafic minerals. Trace minerals include pyrite, chalcopyrite and molybdenite (Assessment file 20000006750). During the 2007 trenching program, bonanza grade gold intercepts were encountered within the Golden Mile Zone. Significant channel sample results from the Golden Mile Zone included 32.96 g Au/t over 11.6 m in trench AMX-01 and 27.04 g/t Au over 9.55 m in trench in AMX-04. Initial exploration had revealed a continuous gold mineralization of greater than 400 m at surface. Later, channel samples taken at 20 m intervals along this zone showed an average value of 20.2 g/t Au over an average length of 4 m. Discovery of the Golden Mile Zone resulted in an expanded drilling program for 2007 that included 69 drillholes totalling 6,261 m. Significant results from the drilling program included 3.6 m grading 358.56 gpt (uncut) in drillhole HR07-51 and 2.9 m grading 45.25 gpt in drillhole HR08-44. Similar bonanza grades were encountered in drillholes HR07-50 and HR07-65. The Golden Mile Shear Zone has been drilled to a depth of greater than 1,000 m below the surface (HR08-297 and HR09-297B). The main gold-bearing portion of the Golden Mile Zone is more than 2 km in strike length. The high-grade area in the central part of the GM Zone has returned intersections as high as 3,876 g Au/t over 0.3 m and 515.98 g Au/t over 2.5 m in drillhole HR07-51; and a high-grade intersection to the east returned 16.98 g Au/t over 1.3 m, including 63.67 g Au/t over 0.3 m in drillhole HR08-171. The vein structures remain open below a depth of 1 km. The infill drilling intersected high-grade gold mineralization, in drillhole HR09-322 with 16.5 g Au/t over about a metre, which included 31.3 g Au/t over 0.5 m; and in drillhole HR09-328 with 11.18 g Au/t over 2.4 m, including 45.4 g Au/t over 0.4 m. Infill drilling during 2008 intersected high grades, with 14.78 g Au/t over about 9 m, including 32.22 g Au/t over 3.3 m in drillhole HR08-161. The Lucky Strike vein was discovered 200 m southwest of the Golden Mile vein during the course of a deeper drilling program along the central part of the Golden Mile vein. It was intersected at a depth of about 40 m. Visible gold was found in a 2 m wide quartz vein in drill core. Further drilling on this structure has outlined a broad zone of gold mineralization that contained a grade of 1.2 g Au/t over about 40 m in drillhole HR08-137. The LS and GM structures appear to converge at depth, suggesting a potential high-grade target at their intersection. There is a wedge-shaped region of shallow mineralization above the main intersections in the zone (Kociumas and Power-Fardy, 2010).

Mineral Record Details

References

Publication - A Technical Review and Mineral Resource Estimate of the Hercules Property

Publication Number: 2010 NI 43-101 Date: 2010

Author: Kociumas, M.W., Power-Fardy, D.

Publisher Name: Watts, Griffis and McOuat for Kodiak Exploration Ltd.

Location: SEDAR under Prodigy Gold

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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office