Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42D14NW00002

Record: MDI42D14NW00002

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Silver, Lead

Location

Township or Area: Pays Plat Lake Area

Latitude: 48° 59' 39.69"    Longitude: -87° 19' .62"

UTM Zone: 16    Easting: 476823   Northing: 5426877    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42D14NW, 42E03SW

Point Location Description: Map in Assessment file 42E03SE8252

Location Method: Data Compilation

Access Description: The property is located approximately 402 m east of Little Duck Lake and 804 m northeast of Bobbie Lake. The Little Duck Lake area is approximately 27 km north of Schreiber (claim map G-609). The property is accessible by aircraft to Big Duck Lake. Alternately, a diamond drill trail leads to the Big Duck Lake area from the Winston Lake Mine site.

Exploration History

1917: The occurrence was staked by W. Longworth. One-quarter interest in the property was transferred to S. Richardson and a second quarter to R. Matheson. 1918: One-quarter interest in the property was transferred to P. Longe. A total of 60 days of work was recorded. 1919: A total of 150 days of work was recorded. 1954: A HLEM survey was conducted for the Bathurst-Maritimes Group. 1960: Sampling of the property was done by the Keevil Mining Group. 1981: Noranda Exploration Company Limited performed a magnetometer survey over the property. 1982: IP, magnetometer and VLF-EM surveys, sampling and geological mapping were conducted by Noranda Exploration Company Limited. The occurrence was restaked by C. Dorvean for Corporation Falconbridge Copper. Diamond drilling, geophysical and geochemical surveys were conducted. Geochemical and airborne geophysical surveys were carried out. 1983: Geological sampling was conducted over the property.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wawa

Terrane: Wawa-Abitibi

Belt: Schreiber-Hemlo

Geological Age: Archean  

Geology Comments

Dec 07, 2005 (B Nelson) - Tanton (1920) first described the Longworth occurrence: 'on one of the Longworth claims a highly pyritiferous vein has been weathered to a depth of 12 feet and fine gold can be panned from the gossan. This is locally known as the Mud Vein though it does not occur in a fault plane. These veins range from less than a foot to about 15 feet in width and their walls are fairly distinct, though a narrower marginal zone of country rock is frequently found impregnated with quartz and pyrite. These deposits have the appearance of fissure fillings which have a minor amount of marginal replacements of country rock associated with them.'Hopkins (1922) writes that the circuitous vein which strikes northeast-southwest for 200 feet and dips from 60 to 80 degrees southeast occurs in hornblende schist and altered basic pillow lava. The vein is from one to three feet wide and consists of brown and yellow soft iron oxide carrying fragments of mica, pyrite and some galena and quartz. At depth the decomposed material will probably give way to calcite and pyrite etc. Similar decomposed material was noticed in the McQuaig, Fisher and other deposits.

Lithology

Mineralization

Mineralization Comments

Dec 07, 2005 (B Nelson) - The vein consists of brown and yellow soft iron oxide carrying fragments of mica, pyrite and some galena and quartz. Four chip samples, three at the northeast end; one near the southwest end, were taken across the exposed portion of the deposit by the Keevil Mining Group in September 1960. These samples indicate the gold content to be low. Wells (1984) reports that a grab sample (# TBS 538) taken by Corporation Falconbridge Copper returned 930 ppb Au.

Mineral Record Details

References

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:

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

Publication Number: R027 Page: 37  Date: 1997

Author: Pye E.G.

Publisher Name: Ontario Dept. of Mines

Location:

File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Thunder Bay office

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP

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:

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

Publication Number: MDC013 Page: 300  Date: 1971

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

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

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

Publication Number: OFR5951 Page: 143-145  Date: 1996

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

Publisher Name: Ontario Geological Survey

Location:

Part - Schreiber-Duck Lake area

Publication Number: ARV30-04.001 Page: 20  Date: 1998

Author: Hopkins P.E.

Publisher Name: Ontario Dept. of Mines

Location:

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