Ministry of Energy, Northern Development and Mines
Permanent Link to this Record: MDI000000002479Deposit Name(s) | South Trench - 1999, Beaver Pond - 1999, Offset Trench - 2009 |
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Deposit Status | occurrence |
Date Created | 2020-Dec-18 |
Date Last Modified | 2020-Dec-18 |
Created By | T Pettigrew |
Revised By | T Pettigrew |
Primary Commodities: gold
Township or Area: Walters
Latitude: 49° 44' 47.91" Longitude: -87° 43' 24.56"
UTM Zone: 16 Easting: 447878 Northing: 5510713 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E12NE
Point Location Description: Showing location from Assessment report 20000001185
Location Method: based on assessment
Access Description: The property is accessible by travelling north along Highway 801 (Paint Lake Road) from Highway 11 for 13.6 km to the Namewaminikan (Sturgeon) River Bridge, then proceeding east on the Sturgeon River Road for 8.2 km. At this point, a tractor road traverses south for 1 km to the main stripped area comprising the occurrence.
1998: F. Houghton, P. Houghton, and L. Clarke carried out prospecting, stripping, trenching, and VLF-EM surveys. 2005: Alto Ventures conducted an IP survey, prospecting, geological mapping, and sampling. 2007: Alto Ventures carried out prospecting, stripping, and sampling. 2008: Alto Ventures carried out stripping, mapping, and sampling. 2009: Alto Ventures carried out prospecting and sampling.
Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
---|---|---|
2.38536 | 20000003447 | Open |
10 | 42E13SE0151 | Open |
2.21037 | 42E13SE2015 | Open |
W9540-00143 | 42E13SE0033 | Open |
2.13156 | 42E13SE0110 | Open |
2.47671 | 20000006225 | Open |
2.44116 | 20000004542 | Open |
2.31724 | 20000001185 | Open |
Province: Superior
Subprovince: Wabigoon
Belt: Onaman
Intrusion: Coyle Lake Stock
Geological Age: Archean
12/18/2020 (T Pettigrew) - The property is located within the south-central portion of the Onaman-Tashota metavolcanic belt, which is part of the eastern Wabigoon Subprovince. This region of Elmhirst Township is underlain by a thick succession of intermediate to felsic metavolcanic rocks, mainly of pyroclastic origin, which have been intruded by a medium-grained granodiorite to diorite body known as the Coyle Lake stock. The Coyle Lake stock is one of a group of three early-Precambrian intrusive bodies occupying a 20 km area immediately north of the Paint Lake fault. A major structural feature, first identified by Mackasey and Wallace (1972) and here named the Coyle Lake fault traverses the southeast portion of the Coyle Lake stock. The fault mimics the regional northeast structural trend and offsets the contact of the Coyle Lake stock in the Mud Lake area (Mason et al., 1999).
Rock Type | Rank | Composition | Texture | Relationship |
---|---|---|---|---|
intermediate intrusive | 1 | diorite | contains | |
vein | 2 | quartz-carbonate | host |
Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Habit Description |
---|---|---|---|---|---|---|---|
1 | pyrite | economic | ore | ||||
1 | quartz | economic | gangue |
12/18/2020 (T Pettigrew) - The South Trench area is 900 m southwest of the Clarke Extension and at the southwestern end of the presently outlined shear zone. In the South Trench area, a flat outcrop consists of sheared rocks with millimeter-thick quartz banding and 1-5% disseminated pyrite. Sampling in 2005 returned assays values ranging from 3.174 to 6.68 g/t Au (Assessment report 20000001185). The Beaver Pond trench is located 200 m to the east of the Main-South-Offset showings. The geology there is the same granodiorite-diorite stock, with a large 10-30 cm, mineralized quartz vein continuous over more than 40 m, trending north-northeast with a vertical dip, similar to the veins found in the Main Extension, Offset and South trenches. This vein contains 10-30% carbonate, with 3-5% blebby to stringers of pyrite, with trace chalcopyrite. The vein becomes discontinuous in the northern portion of the trench, but still shows anomalous gold values (sample 755108; 1056 ppb over 0.5 m). This vein is not as auriferous as the southern veins, but still contains the potential for higher numbers, due to the nugget style of the mineralization. Samples collected in 2009 returned values of up to 4.293 ppm Au (Assessment report 20000006225).
Publication - Thunder Bay North (Beardmore-Geraldton) District – 1998; In: Report of Activities, 1998, Resident Geologist Program, Thunder Bay North Regional Resident Geologist Report, p. 14-16
Publication Number: OFR5988 Date: 1999
Author: Mason, J.K., White, G.D., O’Brien, M.S., Walden, A., Komar, C.
Publisher Name: OGS
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