Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E03SW00024

Record: MDI42E03SW00024

General

Commodities

Primary Commodities: Zinc, Gold

Secondary Commodities: Silver, Copper, Lead

Location

Township or Area: Pays Plat Lake Area, Rope Lake Area

Latitude: 48° 59' 58.8"    Longitude: -87° 19' .1"

UTM Zone: 16    Easting: 476836   Northing: 5427467    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42E03SW

Point Location Description: Trench

Location Method: Data Compilation

Access Description: The occurrence is located about 1220 m east of the northern most bay of Little Duck Lake, and approximately 2 km west of Big Duck Lake. It comprises the western extension of the Coco-Estelle deposit, east of a north-northwesterly trending fault (claim TB 534408, claim maps G-606 and G-609, Pays Plat Lake and Rope Lake, respectively). The Church showing is located on line 19+50W between 8+50S and 9+25S of the Corporation Falconbridge grid. The occurrence is accessible by a drill road which extends from a secondary road that connects the Winston Lake Mine site to Highway 17 at a point 8 km west of Schreiber. The occurrence is also accessible by float plane to Big Duck lake or by helicopter.

Exploration History

1916: Showing was discovered. 1917: Staked by W. Longworth. 1923: Staked by J. Amm. 1928: Staked by E. Stafford. 1935: Staked by T. Armstrong. 1950: Staked by M. Levine, who transferred all interest to Magnet Consolidated Mines.1954: Unspecified geophysical survey; D. Keith. 1957: Diamond drilling (3 x-ray holes totalling 67.2 m); Kinasco Exploration and Mining Limited. The drilling tested the 'B Anomaly'. 1960: Diamond drilling (10 holes totalling 824.8 m); KRNO Mines Limited. The drilling tested the 'Coco West Zone'. Geological mapping; Keevil Mining Group. 1975: Mid-North Engineering Services Ltd. drilled 1 DDH totalling 63.4 m on the Church showing. 1980-1984: Geological, geophysical and geochemical surveys; Noranda Exploration Company Limited. 1984: Geological, geophysical and geochemical surveys and diamond drilling (4 holes totalling 624 m); Corporation Falconbridge Copper. The drilling tested extensions of the Church Zone and proximal geophysical (HEM) anomalies. 1990: Geophysical survey (IP) and thesis work; D. Ritcey. 1993: Diamond drilling (10 holes totalling 2163 m); Metall Mining Corporation and Rusty Lake Resources Ltd. The drilling was done in the Big Duck Lake area, with 3 holes on the Coco-Estelle zone, 4 Holes on the West Nelson Pit, and 3 holes on IP anomalies. 2003: Tri-Alpha Investments carried out trenching. 2013: Clear Gold Resources carried out prospecting and sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (D McKay) - Pye (1964, p.25) described the Church deposits: The Church deposits, three in number, are found about 4,000 feet east of the northernmost bay of Little Duck Lake, on ground originally staked in 1916 by William Longworth and in 1960 held by KRNO Mines Limited. The first of the deposits, exposed in a north-south trench about 60 feet long, is made up of disseminated to massive pyrite and subordinate magnetic pyrrhotite, which have replaced the schist where it is bordered on the south by a 10 foot band of quartz porphyry. There is, however, some doubt that the contact was instrumental in localizing the deposit, because detailed mapping by Keevil Mining Group in October 1960, indicated that the sulphides may occur along a sheared zone striking N 20 degrees W and dipping 60 degrees E. The second of the deposits lies about 50 feet south of the first and is exposed in a north-south trench, 30 feet long, and in a pit 25 feet west of this trench. It is similar to the first in character, and is made up of disseminated, and in places massive sulphides in hornblende schist, along a sheared zone striking N 85 degrees E, and dipping 65 -75 degrees N. As before, the principal sulphides are pyrite and pyrrhotite, but here a little sphalerite is also present. A third deposit was indicated by diamond- drillhole CH-18 which, at a depth in the hole of 191.0 feet, cut 8 feet of mineralized schist and quartz. This was found on assaying to average 0.38 ounces of gold per ton. To the author's knowledge, this deposit is not exposed in outcrops, and its dimension, attitude, and potential value have not been ascertained.

Lithology

Lithology Comments

Dec 07, 2005 (D McKay) - Wells (1984, assessment files) notes: The mafic pillow and pillow breccia unit exposed in the southern part of the clearing is very rusty.

Mineralization

Mineralization Comments

Dec 07, 2005 (D McKay) - Drilling by Corporation Falconbridge Copper indicated the presence of sulphide mineralization, sometimes associated with quartz-carbonate zones and veins. Pyrite predominates and other sulphides such as pyrrhotite, chalcopyrite and sphalerite occur as well as trace disseminations or in concentrations of up to 10%. Ferguson et al (1971, p.291) described the three sulphide zones: The first of these [zones] strikes N20 degrees W, dips 60 degrees E, assayed 0.02 ounces of gold and 0.40 ounces of silver per ton (over 1.4 feet in drill core), and appears to occupy a shear zone along the contact. Another [zone] to the south strikes N85 degrees E, dips 65-75 degrees N, assayed up to 0.25 ounces of gold per ton and 5.49 percent zinc (over 4 feet in drill core). A third zone, apparently unexposed at the surface assayed 0.38 ounces of gold per ton (over 8 feet in drill core). Wells (1984, assessment files) reported: One thin zone (20 cm) of massive pyrite-pyrrhotite within this unit resembles a vein and yielded up to 6.94% Zn and 6.4 g/T (0.2048 oz./ton) gold.

May 28, 2019 (Therese Pettigrew) - Samples collected by Clear Gold in 2013 assayed up to 20.37 ppm Au, 2891 ppm Cu, 1410 ppm Pb, and 16740 ppm Zn (Assessment file 20000008066). Samples collected from Trench #8 by Tri-Alpha in 2003 assayed 3.52 g/t Au and 9.67 g/t Au. Samples from the north part of Trench #7 include 0.76 g/t Au, 20.0 g/t Ag, 0.06% Cu, and 10.70% Zn from semi-massive sulphides over a sample length of 1.0 m, and a weighted average of 3.96 g/t Au, 11.5 g/t Ag, 0.12% Cu, 0.34% Zn over 2.0 m (Assessment file 42E03SW2002).

Mineral Record Details

References

Map - Big Duck Lake area, District of Thunder Bay

Publication Number: M2023 Scale: 1:15,840    Date: 1997

Author: Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:

MonoMap - Mineral deposits of the Big Duck Lake area, District of Thunder Bay

Publication Number: R027 Page: 25  Date: 1997

Author: Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:

File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

Map - Big Duck-Aguasabon lakes area, District of Thunder Bay, Ontario

Publication Number: ARM49K Scale: 1:31,680    Date: 1997

Author: Bartley M.W.

Publisher Name: Ontario Dept. of Mines

Location:

Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay

Publication Number: MDC013 Page: 290-291  Date: 1971

Author: Ferguson S.A., Groen H.A., Haynes R.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

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

Location:

Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.

Publication Number: OFR5951 Page: 810-814  Date: 1996

Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.

Publisher Name: Ontario Geological Survey

Location:

Report an Error

We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.

Terms of Use

Please review our Terms of Use agreement for this data product.

Ministry Contact Information

For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office