Ministry of Energy, Northern Development and Mines
Permanent Link to this Record: MDI000000002481| Deposit Name(s) | Mud Lake No. 2 - 1998 |
|---|---|
| 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: Elmhirst
Latitude: 49° 46' 27.6" Longitude: -87° 39' 38.79"
UTM Zone: 16 Easting: 452423 Northing: 5513750 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E13SE
Point Location Description: 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, geological mapping, and sampling. 2007: Alto Ventures carried out prospecting, stripping, and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.38536 | 20000003447 | Open |
| 2.21037 | 42E13SE2015 | Open |
| 2.19405 | 42E13SE2008 | Open |
| 2.13156 | 42E13SE0110 | Open |
| W9540-00143 | 42E13SE0033 | 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 | granodiorite | ||
| vein | 2 | quartz | host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Habit Description |
|---|---|---|---|---|---|---|---|
| 1 | pyrite | economic | ore | ||||
| 2 | chalcopyrite | economic | ore |
12/18/2020 (T Pettigrew) - Samples taken in 2005 retuned 1.21 g/t from quartz with 2-10% pyrite as disseminations in bands along a contact with the granite, and 5.30 g/t Au from heavily brecciated quartz veining with 20-25% pyrite and trace chalcopyrite (Assessment report 20000001185).
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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