Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42E03NW00013

Record: MDI42E03NW00013

General

Mineral Record Identification
Record Name(s) Dickison Lake Island Occurrence - 1991, Spine Creek - 1991
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1991-Apr-01
Date Last Modified 2022-May-09
Created By
Revised By

Commodities

Primary Commodities: Copper, Zinc, Lead



Location

Township or Area: Dickison Lake Area

Latitude: 49° 9' 53.96"    Longitude: -87° 24' 3.35"

UTM Zone: 16    Easting: 470771.984   Northing: 5445874.627    UTM Datum: NAD83

Resident Geologist District: Thunder Bay South

NTS Grid: 42E03NW

Point Location Description: Outcrop on island

Location Method: Field Visit

Access Description: The occurrence is located on a small island in the southwest end of Dickison Lake approximately 60 km northeast of Terrace Bay (claim map G-31). Access is gained by float plane to Dickison Lake or by logging road from Terrace Bay to the east end of Dickison Lake.



Exploration History

1928: The area was staked, but no work recorded. 1931: Prospecting and staking; Canada Gold Ventures Syndicate. 1954: Geological investigation; M.W. Bartley for the C.P.R. 1970: Geological mapping; M.W. Carter (ODM). 1983-1987: Prospecting; N. Hibbart, J. Marcella, D. McCullough and others. 1984: Property examination and lithogeochemical sampling; OGS Resident Geologist staff.


Geology

Province: Superior

Geological Age: Archean  



Geology Comments

Dec 07, 2005 (D McKay) - Schnieders et al. (1996) describe the occurrence as follows: When visited by the authors in 1984 the water level in Dickison Lake was very high. A carbonate rich shear zone was observed on the small island and on the mainland to the east-northeast. Carter (1975) shows this area as very close to the contact between the metasedimentary rocks and the granitic and migmatitic rocks. Granitic and pegmatitic dikes were observed in the area. A splay fault off the Kamuck River/Gravel River Fault transects the area. Minor chalcopyrite, malachite staining and pyrite were observed in altered metasedimentary rocks. Bartley (1954) states: A promising occurrence of galena, sphalerite and minor chalcopyrite and pyrite outcrops at the water's edge on a small island in the southwest end of Dickison Lake. The showing appears to strike N60 degrees E.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Sandstone 1 Unspecified Metased Rock Host
Granite 2 dykes, locally pegmatitic Near

Lithology Comments

Dec 07, 2005 (D McKay) - The sulphides are contained in an altered sedimentary rock composed of brown weathering carbonate, biotite, sodic feldspar and quartz.




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1ChalcopyriteEconomicOre
2GalenaEconomicOre
3PyriteEconomicOre
4SphaleriteEconomicOre
CarbonateAlterationUnknown1UnknownDisseminated

Mineralization Comments

Dec 07, 2005 (D McKay) - Bartley (1954) described the occurrence as follows: A promising occurrence of galena, sphalerite and minor chalcopyrite and pyrite outcrops at the water's edge on a small island in the southwest end of Dickison Lake. The showing appears to strike N60 degrees E. Masses of galena with intermixed sphalerite occur in blebs up to two inches in diameter, and are associated with minor chalcopyrite and pyrite. These sulphides are contained in an altered sedimentary rock composed of brown weathering carbonate, biotite, sodic feldspar and quartz. Grab samples collected from the occurrence in 1984 by OGS Resident geologist staff returned assay values of up to nil Au, nil Ag and 775 ppm Cu.



Alteration Comments

Dec 07, 2005 (D McKay) - Schnieders et al. (1996) state: A carbonate rich shear zone was observed on the small island and on the mainland to the east-northeast.




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 - Geology of the Dickison Lake area, District of Thunder Bay

Publication Number: R123 Date: 1975

Author: Carter M.W.

Publisher Name: Ontario Division of Mines

Location:


File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files

Publication Number: Min Dep Date:

Author:

Publisher Name:

Location: Thunder Bay RGP


Map - Dickison Lake, Thunder Bay District

Publication Number: M2293 Scale: 1:63,360    Date: 1974

Author: Carter M.W.

Publisher Name: Ontario Division of Mines

Location:


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

Publication Number: OFR5951 Date: 1996

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

Publisher Name: Ontario Geological Survey

Location:


Book - DICKISON LAKE AREA, UNPUBLISHED RPT, C.P.R. DEVELOPMENT SECTION, 10P

Publication Number: CPR RPT Date: 1955

Author: Bartley, M.W.

Publisher Name:

Location: Thunder Bay RGP


Book - ASSESSMENT FILES, SH RES GEOL DIST

Publication Number: AF Date:

Author:

Publisher Name:

Location: Thunder Bay RGP


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