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Ontario Geological Survey
Permanent Link to this Record:
MDI52O11SE00007
| Record Name(s) | Wettlaufer Lake - 1979, Heinz Lake - 1979, Boland, C.L. - 1979 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1979-Sep-21 |
| Date Last Modified | 2022-Jun-07 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Nickel, Gold
Secondary Commodities: Silver, Molybdenum
Township or Area: Cannon Lake Area
Latitude: 51° 33' 11.13" Longitude: -91° 0' 28.37"
UTM Zone: 15 Easting: 638111.48 Northing: 5713214.553 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52O11SE
Point Location Description: Precise
Location Method: Conversion from MDI
1969-1971: Trenching, geophysical surveys and diamond drilling by Card Lake Copper Mines Ltd.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 10 | 52O11SE8949 | 52O11SE8949 |
| 52O10SW0011 | 52O10SW0002 | 52O10SW0002 |
| 52O11SW37 | 52O11SW9308 | 52O11SW9308 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Lang Lake
Geological Age: Neoarchean
Apr 02, 2007 (Mark Puumala) - The Wettlaufer/Heinz Lakes area is located in the southeastern corner of the Lang Lake Greenstone Belt. Fenwick and Srivastava (1971) indicate that the supracrustal rocks in this area are dominantly mafic metavolcanics (mostly massive and pillowed flows with some tuffaceous units). The supracrustal rocks are bounded to the south and east by granitic intrusive rocks. Fenwick and Srivastava (1971) have 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 the supracrustal rocks in the Wettlaufer Lake area are interpreted to be located on the southern limb of this syncline. Foliation orientations measured in this area have strike orientations ranging from west-northwest to east-northeast with near-vertical dip.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Flows And Tuffs | Contains |
|---|---|---|---|---|
| Pegmatite | 2 | Contains |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Chalcopyrite | Economic | Ore | ||||
| 10 | Molybdenite | Economic | Ore | ||||
| 15 | Pyrite | Economic | Ore | ||||
| 20 | Pyrrhotite | Economic | Ore |
Apr 02, 2007 (Mark Puumala) - Darke (1970) indicates that this occurrence has been exposed in surface trenches that contain anomalous concentrations of pyrite and pyrrhotite. However, no description of the host lithology is provided. Diamond drill hole logs for five boreholes advanced by Card Lake Copper Mines in 1970 (Drill hole numbers 1, 2, 3, 6 and 7) indicate that anomalous copper mineralization generally occurs in units logged as andesitic tuff (AFRI# 52O11SE8949). Numerous felsic intrusive units generally described as pegmatite have been logged in close proximity to the mineralized sections. Mineralization in the andesite tuff is generally indicated to consist of pyrrhotite and chalcopyrite. The sulphide concentration is indicated to be as high as 5%, with mineralization generally occuring in seams and as fracture fillings. In addition, narrow pegmatitic stringers and veins mineralized with chalcopyrite, pyrite, pyrrhotite and molybdenite were logged in drill hole No. 7. The most notable assays reported from the surface showing were 6.5% Cu and 0.18% Ni (Darke 1970). Significant copper mineralization was reported from a number of diamond drill intersections in ddh numbers 1, 2, 3 and 7 (AFRI# 52O11SE8949). The most significant reported result was a 3.05 m section of ddh 7 which graded 1.46% Cu. Another 0.9 m long section from this borehole assayed 1.87% Cu. Anomalous silver and gold assays (up to 0.23 oz/ton Ag and 0.05 oz/ton Au) were also reported from ddh 7. Other notable assay results included a 3.6 m long section of anomalous mineralization in ddh 1 that averaged 0.22% Cu (including 0.54% over 0.6 m), a separate 0.6 m interval from ddh 1 containing 0.44% Cu and 0.27% Ni, a 0.6 m section of ddh 2 that assayed 1.10% Cu and 0.17% Ni, and a 2.4 m section of ddh 3 that averaged 0.35% Cu.
| Rank | Classification |
|---|---|
| 1 | Porphyry |
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
Book - AF SL 1973 52O11SW-0037
Publication Number: N/A Date: 1996
Author:
Publisher Name:
Location:
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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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office