Mineral Deposit Inventory for Ontario

Ministry of Energy, Northern Development and Mines

Permanent Link to this Record: MDI000000002478

Deposit: MDI000000002478

General

Mineral Deposit Identification
Deposit Name(s) Clarke Showing - 1999
Deposit Status occurrence
Date Created 2020-Dec-18
Date Last Modified 2020-Dec-18
Created By T Pettigrew
Revised By T Pettigrew

Commodities

Primary Commodities: gold

Location

Township or Area: Elmhirst, Walters

Latitude: 49° 45' 12.36"    Longitude: -87° 42' 52.58"

UTM Zone: 16    Easting: 448525   Northing: 5511462    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 42E13SE

Point Location Description: Showing location from Assessment report 20000001185

Location Method: data compilation

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.

Exploration and Mining History

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, sampling, and drilled 5 DDH totaling 355 m. 2008: Alto Ventures carried out stripping, mapping, and sampling, and drilled 5 DDH totaling 426 m. 2009: Alto Ventures carried out prospecting and sampling.

Assessment Work on File

Assessment Work on File
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

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Onaman

Intrusion: Coyle Lake Stock

Geological Age: Archean   

Geology Comments

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).

Mineral Deposit Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
intermediate intrusive 1 quartz diorite
vein 2 quartz-carbonate host

Mineralization

Deposit Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Habit Description
1 pyrite economic ore
2 chalcopyrite economic ore

Mineralization Comments

12/18/2020 (T Pettigrew) - The Clarke showing is 700 m southwest of the Mud Lake No. 6 showing. Samples collected in 2005 returned up to 4.861, 6.764, 8.058 ppm Au from strongly sheared and rusty outcrop with 25-30% pyrite (Assessment report 20000001185). DDH MUD07-22 returned 2.11 g/t Au over 2 m from the Clarke South Zone and 2.35 g/t Au over 1.7 m from the Clarke North Zone. DDH MUD07-12 returned 0.9 g/t Au over 8 m including 1.96 g/t Au over 2 m from the Clark North Zone. DDH MUD08-24 returned 1.13 g/t Au over 2 m from the Clarke North Zone. DDH MUD08-25 returned 2.85 g/t Au over 1 m from the Clarke North Zone (Assessment report 20000003447).

References

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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Ministry Contact Information

For detailed information regarding this mineral deposit please contact the Thunder Bay North Resident Geologist District Office