Ontario Geological Survey
Permanent Link to this Record:
MDI52O11SE00006
| Record Name(s) | Card Lake - 1988 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1988-Feb-10 |
| Date Last Modified | 2022-Jun-07 |
| Created By | |
| Revised By |
Primary Commodities: Iron
Township or Area: Cannon Lake Area
Latitude: 51° 37' 13.11" Longitude: -91° 14' 22.4"
UTM Zone: 15 Easting: 621870.864 Northing: 5720276.906 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52O11SE
Point Location Description: General
Location Method: Conversion from MDI
1969-1970: Geophysical surveys and diamond drilling by Card Lake Copper Mines Ltd.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 52O11SW0032 | 52O11NE0004 | 52O11NE0004 |
| 52O11SW37 | 52O11SW9308 | 52O11SW9308 |
| 52O11NW0010 | 52O11NW0001 | 52O11NW0001 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Lang Lake
Geological Age: Neoarchean
Apr 02, 2007 (Mark Puumala) - Mapping by Fenwick (1970) indicates that the rocks in the immediate vicinity of Card Lake are part of an approximately 5 km wide metasedimentary sequence that consists of conglomerate, greywacke, argillite, iron formation and their metamorphosed equivalents. To the north of Card Lake, the metasedimentary sequence is underlain by mafic metavolcanic rocks mapped as amphibolite (Fenwick 1970). The Card Lake iron formation is located near the inferred contact between the metavolcanic and metasedimentary sequences. Fenwick (1970) has interpreted that the supracrustal rocks of the Lang Lake Greenstone Belt have been folded into an isoclinal syncline structure. The axis of this structure trends approximately 070 and plunges at 40 to 60 degrees to the east. The axis of the fold has been mapped between Lang and Boyes Lakes to the west, and is tentatively interpreted by Fenwick (1970) to pass through Card Lake. Bedding and foliation orientations are approximately parallel in the Card lake area, with strike generally ranging from east-west to east-northeast and near-vertical dip.
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | Is |
|---|---|---|---|---|
| Amphibolite | 2 | Amphibolite | Adjacent | |
| Sandy Conglomerate | 3 | Conglomerate, Greywacke, Argillite | Near | |
| Pegmatite | 3 | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Chalcopyrite | Economic | Ore | ||||
| 10 | Magnetite | Economic | Ore | ||||
| 15 | Molybdenite | Economic | Ore | ||||
| 20 | Pyrite | Economic | Ore | ||||
| 25 | Pyrrhotite | Economic | Ore |
Apr 02, 2007 (Mark Puumala) - Darke (1970) indicates that three diamond drill holes were advanced by Card Lake Mines at this location to test geophysical (magnetic) anomalies. The lithology responsible for the anomalies in all cases was indicated to be sequences of banded magnetite iron formation. Darke (1970) reported that no significant sulphides were encountered in the iron formation. However, pegmatite stringers mineralized with molybdenite were reported to have been encountered during the drilling. Testing of the wide (no figures are provided) iron formation unit was reported by Darke (1970) to have assayed up to 35% soluble iron.
| Rank | Classification |
|---|---|
| 1 | Sedimentary |
| Rank | Characteristic |
|---|---|
| 1 | Stratiform |
Map - Geological series, Lang-Cannon lakes area (central part), District of Kenora (Patricia Portion)
Publication Number: P0665 Scale: 1:31,680 Date: 1997
Author: Fenwick K.G.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
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