Ontario Geological Survey
Permanent Link to this Record:
MDI52F10NW00139
| Record Name(s) | Johnson-Contact Bay - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary 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' 1.26" Longitude: -92° 48' 35.17"
UTM Zone: 15 Easting: 513717.858 Northing: 5505332.368 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F10NW
Point Location Description: Johnson-Contact Bay Occurrence is located on the west shore of Contact Bay
Location Method: Conversion from MDI
Access Description: The Johnson-Contact Bay Occurrence is located on the lake shore of a small bay, on the west shore of Contact Bay of Wabigoon Lake on mining claim K-911490. It is situated immediately southwest of the southeast corner of patented claim K.649. The occurrence is accessible by boat.(OFR 5723, p.220)
1986: Occurrence discovered and staked by Stan and Sherridon Johnson (OFR5723, p.220)
Province: Superior
Geological Age: Precambrian
Apr 30, 2010 (J Bongfelt) - The occurrence is situated within mafic to felsic metavolcanic flows and pyroclastics of the tholeiitic to calc-alkaline Lower Wabigoon Volcanics. The metavolcan1cs are intruded by numerous east-trending felsic dikes and gabbro stocks. The occurrence is 850 m north of the contact between granitic rocks of the Atikwa Batholith and the metavolcanics. (OFR 5723, p.220)
Apr 30, 2010 (J Bongfelt) - A shear zone striking 125°/60° N extends through sheared, magnetite and sulphide-rich interflow metasediments within mafic metavolcanic flows, intruded by numerous fine-grained felsite dikes. Narrow, discontinuous quartz veins and stringers occur within the sheared rocks. The quartz has a very "sugary", granular texture, which may indicate that it has been re-crystallized. Abundant disseminated pyrite (1-10%) occurs within the most intensely sheared. fissile rocks and "sugary" quartz. The surrounding metavolcanic rock and felsic dikes are massive, blocky, and fractured. Siliceous, clastic, interflow metasediments immediately south of the shear zone host discontinuous, bifurcating layers of magnetite. The metasediments are a few feet thick but appear to have a limited strike length. Numerous quartz veins were examined in the area surrounding the occurrence. The majority of the veins are hosted by tension fractures with variable but dominantly northwest orientations. The veins consist of white quartz • containing variable amounts of pyrite, covellite, molybdenite, and hematite. (OFR 5723, p.220)
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Covellite | Economic | Ore | ||||
| 10 | Gold | Economic | Ore | ||||
| 15 | Hematite | Economic | Ore | ||||
| 20 | Molybdenite | Economic | Ore | ||||
| 25 | Pyrite | Economic | Ore |
Apr 30, 2010 (J Bongfelt) - The author observed excellent gold pannings from the occurrence however, the highest gold assay from grab samples taken by the author was 100 ppb gold. (OFR 5723, p.220)
Mono - Geology, gold mineralization and property visits in the area investigated by the Dryden-Ignace economic geologist, 1984-1987
Publication Number: OFR5723 Page: 220 Date: 1989
Author: Parker J.R.
Publisher Name: Ontario Geological Survey
Location:
Journal - Kenora Property Visit File 52F10NW00139-Johnson
Publication Number: Date: 2010
Author:
Publisher Name:
Location: Kenora RGP office
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