Ontario Geological Survey
Permanent Link to this Record:
MDI52O06SE00028
| Record Name(s) | Powerline Zone - 1990, Kawashe Lake # 23 - 1990 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1990-Nov-28 |
| Date Last Modified | 2022-Sep-27 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Kawashe Lake Area
Latitude: 51° 21' 13.12" Longitude: -91° 6' 40.4"
UTM Zone: 15 Easting: 631519.525 Northing: 5690846.112 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52O06SE
Point Location Description: Diamond drill holes
Location Method: Conversion from MDI
Access Description: The Poweline Zone is located about 63 km west-southwest of Pickle Lake and about 2 km southeast of the Golden Patricia mine. The Powerline Zone is located near the Golden Patricia mine powerline about midway between Muskegsagagen Lake and Hour Lake (local name). Access to this occurrence is best gained through the Golden Patricia mine, which is services by an all-weather airstrip and a winter road from Pickle Lake. Appropriately equipped aircraft may land on Muskegsagagen Lake and Hour Lake (local name).
1984: St. Joe Canada Inc. commissioned an airborne magnetometer survey over an area including the occurrence. This was followed up with a ground mag survey over an area including the occurrence. 1985: St. Joe Canada Inc. did ground mag, EM and IP surveys and diamond-drilling around the occurrence. 1986: St. Joe Canada Inc. and Geocanex Ltd. did separate airborne mag and EM surveys over areas including the occurrence. 1986: St. Joe Canada Inc. continued diamond-drilling around the occurrence. 1988: St. Joe Canada Inc. / Bond Gold Canada Inc. did additional geophysical surveys around the occurrence and did the diamond-drilling which located and defined the Esker Zone. 1989 and 1990: Bond Gold Canada Inc. did additional diamond-drilling on and around the Powerline Zone.
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Meen-Dempster
Geological Age: Mesoarchean
Dec 07, 2005 (B Nelson) - Gold has 2 modes of occurrence in the Powerline Zone. The first is in a series of 6 parallel gold-bearing quartz veins. The second is in silicified, sulphide replaced iron formation. The iron formation, banded chert and magnetite, occurs with tuffaceous metasediments within a succession of mafic metavolcanic flows. The succession is cut by quartz-feldspar porphyry intrusives. The 6 gold-bearing quartz veins strike 075 degrees and dip steeply south. They occur in mafic metavolcanics and appear to occupy axial planar structures to minor drag folds in the iron formation (J. Ackert, mine geologist, Lac Minerals Ltd., written communication, 1993). The gold in the iron formation occurs where it is cut by the axial planar structures hosting the gold-bearing quartz veins. There, the principle sulphide-replacing magnetite is pyrrhotite although pyrite, chalcopyrite and sphalerite are noted in the drill logs. Visible gold is also present in the zone. Gold at the Powerline Zone is also found with a zone of light-grey, quartz carbonate veining hosted by a mafic metavolcanic flow and with a strongly brecciated and sheared zone mineralized with pyrrhotite within a mafic metavolcanic flow.
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | Iron Formation | Host |
|---|---|---|---|---|
| Vein | 2 | Quartz | Contains | |
| Mafic flow breccia | 3 | Breccia & Shear Zone | Host | |
| Granitoid-Unsubdivided | 4 | Quartz-Feldspar | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Magnetite | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 4 | Pyrrhotite | Economic | Ore | ||||
| 5 | Chalcopyrite | Economic | Ore | ||||
| 6 | Sphalerite | Economic | Ore | ||||
| Quartz | Alteration | Silicification | 1 | ||||
| Unspecified | Alteration | Sulphidation | 2 | ||||
| Carbonate | Alteration | Unknown | 3 | ||||
| Chlorite | Alteration | Unknown | 4 | ||||
| Epidote | Alteration | Unknown | 5 |
Dec 07, 2005 (B Nelson) - The following are among the better assays reported from the Powerline Zone: PL-88-07: In iron formation: 5.86 g/t Au over 7.55 m, including 60.00 g/t Au over 0.65 m. In quartz-carbonate veins: 2.74 g/t Au over 0.30 m. In brecciated and sheared mafic metavolcanic flow, 5.86 g/t Au over 0.95 m. PL-88-08: In iron formation: 7.25 g/t Au over 2.80 m and 2.41 g/t Au over 2.34 m.
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| 3 | Replacement |
| 2 | Vein |
| Rank | Characteristic |
|---|---|
| 2 | Stratabound |
| 1 | Vein |
Map - Cat River-Kawinogans Lake area, District of Kenora (Patricia Portion), Ontario
Publication Number: ARM44F Scale: 1:126,720 Date: 1997
Author: Harding W.D.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Geology of the Cat River-Kawinogans Lake area
Publication Number: ARV44-06.002 Date: 1997
Author: Harding W.D.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Cat Lake-Pickle Lake, geological compilation series, Kenora and Thunder Bay districts
Publication Number: M2218 Scale: 1:253,440 Date: 1976
Author: Sage R.P., Breaks F.W., Troup W.R.
Publisher Name: Ontario Division of Mines
Location:
MonoMap - Geology of the Cat Lake-Pickle Lake area, districts of Kenora and Thunder Bay
Publication Number: R207 Date: 1982
Author: Sage R.P., Breaks F.W.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian geology, Muskegsagagen-Bancroft lakes area, District of Kenora (Patricia Portion)
Publication Number: M2507 Scale: 1:50,000 Date: 1986
Author: Stott G.M., Wilson A.C.
Publisher Name: Ontario Geological Survey
Location:
Mono - Mineral Deposits of the Central Portion of Uchi Subprovince, Volume 1, Meen Lake to Kesagiminnis Lake Portion
Publication Number: OFR5869 Page: 238 Date: 1993
Author: Seim G.Wm.
Publisher Name: Ontario Geological Survey
Location:
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