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Ontario Geological Survey
Permanent Link to this Record:
MDI42D14SE00075
| Record Name(s) | Beaver Lake Occurrence - 1992 |
|---|---|
| Related Record Type | Simple |
| Record Status | Discretionary Occurrence |
| Date Created | 1997-Feb-20 |
| Date Last Modified | 2021-Dec-15 |
| Created By | B Nelson |
| Revised By | Therese Pettigrew |
Primary Commodities: Copper, Lead
Secondary Commodities: Gold
Township or Area: Priske
Latitude: 48° 50' 47.15" Longitude: -87° 15' 3.76"
UTM Zone: 16 Easting: 481581.66 Northing: 5410414.73 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D14SE
Point Location Description: Unknown
Location Method: Other Literature
Access Description: The Beaver Lake occurrence is located in Priske Township approximately 4 km north-northeast of Schreiber. Access to the Beaver Lake occurrence is gained by travelling up the Cook Lake Road to where the Big Duck Creek-Maude Lake walking/fishing trail leads off to the north from Beaver Lake (map 47J). The occurrence is located approximatley 250 m north of the north end of Beaver Lake, along a dried-up swamp or creek bed.
1992: The occurrence was discovered by B.R. Schnieders and M.C. Smyk while conducting reconnaissance investigations in the Big Duck Creek area. 2001: S. Kravchik conducted prospecting. 2008: R. Renner conducted prospecting and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.12994 | 42D14SE0054 | 42D14SE0054 |
| 2.41139 | 20000004086 | 20000004086 |
| 2.24963 | 42D14SE2012 | 42D14SE2012 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
Dec 07, 2005 (B Nelson) - The area is dominated by mafic metavolcanic rocks; namely massive and pillowed flows, however, the showing is near the contact of a granitic/syenitic intrusion known as the Longworth Lake Stock. East and northeast trending faults are present in the area. Quartz float was discovered on the trail and contained pyrite, galena and chalcopyrite. Prospecting discovered a vein up to 15 cm wide at the top of a hill near the powerline. The quartz vein strikes 290 degrees and dips 50 degrees NE. Additional veinlets up to 5 cm wide were observed hosted by metavolcanic rocks along the powerline. The quartz veins display a crack seal texture and contain pyrite, malachite, galena and chalcopyrite. Abundant quartz float was discovered in the area. Further prospecting is warranted, especially towards the northwest and the granite/syenite contact.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Massive And Pillowed Flows | Host |
|---|---|---|---|---|
| Granite | 2 | Near | ||
| Syenite | 5 | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Malachite | Economic | Ore | ||||
| 3 | Galena | Economic | Ore | ||||
| 4 | Chalcopyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Quartz | Alteration | Silicification | 1 | Unknown | Disseminated |
Dec 07, 2005 (B Nelson) - The quartz veins display a crack seal texture and contain pyrite, malachite, galena and chalcopyrite. Four grab samples (92 BBD 01 to 04) were collected from the Beaver Lake area and along the Big Duck trail. Only gold and silver were assayed for. Assays indicated up to 0.005 ounce per ton Au and trace silver. Further prospecting and sampling in this area is recommended (Schnieders et al.).
Date: Feb 20, 1997
Geologist: B Nelson
Notes: Resident Geologist personnel visited the occurrence June 25, 1992.
Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District
Publication Number: M2232 Scale: 1:253,440 Date: 1973
Author: Carter M.W., McIlwaine W.H., Wisbey P.A.
Publisher Name: Ontario Division of Mines
Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.
Publication Number: OFR5951 Scale: Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Map - Schreiber area, District of Thunder Bay, Ontario
Publication Number: ARM47J Scale: 1:31,680 Date: 1997
Author: Bartley M.W., Harcourt G.A.
Publisher Name: Ontario Dept. of Mines
Mono - Geology of Schreiber-Terrace Bay area, District of Thunder Bay
Publication Number: OFR5692 Scale: Date: 1988
Author: Carter M.W.
Publisher Name: Ontario Geological Survey
Map - Geological series, Precambrian geology of the Terrace Bay area, west sheet, Thunder Bay District
Publication Number: P2417 Scale: 1:15,840 Date: 1981
Author: Carter M.W.
Publisher Name: Ontario Geological Survey
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office