Ontario Geological Survey
Permanent Link to this Record:
MDI52F10NW00041
| Record Name(s) | Wilkinson-Bob Lake Occurance - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Jan-22 |
| Date Last Modified | 2023-Aug-16 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Contact Bay Area
Latitude: 49° 42' 20.25" Longitude: -92° 55' 17.36"
UTM Zone: 15 Easting: 505660.856 Northing: 5505904.415 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F10NW
Point Location Description: General
Location Method: Conversion from MDI
Access Description: The showing is accessible by a rough skidder road branching east from Highway 502, 7km, south of its intersection with Hwy. 594. (Kenora AF 52F10NW00041, Wilkinson-Bob Lake)
1983-1984: Staked by Mr. G. Thompson and Mr. D. Wilkinson who conducted stripping, trenching, and sampling. The Bob Lake Occurrence is immediately south of Fiambeau Lake where Voyager Explorations Limited recently (1984) completed extensive exploration for gold. 1985: Claim cancelled. 1986: Area re-staked by Mr. G. Pidgeon. 1987: Claim cancelled and re-staked by Mr. G. Pidgeon. (OFR5723, p.301)
Province: Superior
Geological Age: Precambrian
Mar 25, 2010 (J Bongfelt) - The occurrence is situated within dominantly northwest-facing mafic metavolcanic flows and pyroclastics at the transition between the lower Wabigoon Volcanics and the underlying Eagle Lake Volcanics. The metavolcanics are intruded by numerous felsic dikes. (OFR5723, p.301)
Mar 25, 2010 (J Bongfelt) - The property is underlain by pillowed basalts and mafic pyroclastic rocks metamorphosed to amphibolite grade intruded discordantly by a 3.0 to 5.0 m wide felsite dike striking 095º to 100 º for at least 800 m. Gold mineralization occurs in the portion of the dike which intrudes the metabasalts. The dike is very fine-grained, pale green-grey and siliceous. with disseminated euhedral pyrite [? 2%] throughout. The dike is sericitic and weakly to moderately carbonatized whereas the surrounding mafic rocks are chloritized and moderately carbonatized. Two sets of quartz veins have filled fractures within the felsite dikes. The first set are milk-white. rusty veins containing small clots of chlorite, with minor pyrite and tourmaline. The veins are 2 to 10 cm wide, strike 140 º and terminate at the intrusive contact. The second set of veins strike 040 º and are composed of white quartz and iron carbonate, hosting blebs of sphalerite and chalcopyrite. There is no obvious shearing within the dike. but some of the quartz has filled Z-shaped tension gashes indicating late emplacement of the quartz. Samples from the quartz vein set striking 140 º assayed trace amounts of gold. Gold values of 0.20 ounce gold per ton were obtained from wall rocks in the middle of the dike. but values were found to decrease to trace amounts (0.02 ounce gold per ton) 1n samples collected towards the dike contacts (D. Wilkinson, prospector, personal communication, 1984). Mr. Wilkinson reported that a grab sample from the metabasalts assayed 8 ounces gold per ton, however, this assay could not be repeated with follow-up sampling. Other wide felsite dikes striking 095 º to 110 º occur elsewhere on the property, south of the main occurrence. These dikes are similar to that at the main occurrence. but contain biotite, magnetite. pyrite. chalcopyrite, and pyrrhotite. Grab samples taken from the dikes by the author assayed trace amounts of gold. (OFR5723, p.301)
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Chalcopyrite | Economic | Ore | ||||
| 10 | Pyrite | Economic | Ore | ||||
| 15 | Sphalerite | Economic | Ore |
Mar 25, 2010 (J Bongfelt) - Gold values of 0.20 ounce gold per ton were detected from felsite in the middle of the dike. but values were found to decrease to trace amounts (0.02 ounce gold per ton) in samples collected towards its edges (D. Wilkinson. prospector. personal communication. 1984). Mr. Wilkinson reported that a grab sample from the metabasalts assayed 8 ounces gold per ton. However, this assay could not be repeated with followup sampling. (MP 122, ROA 1984, p.24) (Kenora Property Visit File, F10NW00041, Wilkinson-Bob Lake -Aug., 1984)
Compend - Report of activities, 1984, Regional and Resident Geologists
Publication Number: MP122 Page: 23-24 Date: 1985
Author: Kustra C.R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Geology, gold mineralization and property visits in the area investigated by the Dryden-Ignace economic geologist, 1984-1987
Publication Number: OFR5723 Page: 301-302 Date: 1989
Author: Parker J.R.
Publisher Name: Ontario Geological Survey
Location:
Journal - Kenora Property Visit File, F10NW00041, Wilkinson-Bob Lake (Aug 1984)
Publication Number: Date: 2010
Author:
Publisher Name:
Location: Kenora RGP office
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