Ontario Geological Survey
Permanent Link to this Record:
MDI42E03NW00013
| 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 |
Primary Commodities: Copper, Zinc, Lead
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.
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.
Province: Superior
Geological Age: Archean
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.
| Rock Type | Rank | Composition | Texture | Relationship | Sandstone | 1 | Unspecified Metased Rock | Host |
|---|---|---|---|---|
| Granite | 2 | dykes, locally pegmatitic | Near |
Dec 07, 2005 (D McKay) - The sulphides are contained in an altered sedimentary rock composed of brown weathering carbonate, biotite, sodic feldspar and quartz.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Galena | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 4 | Sphalerite | Economic | Ore | ||||
| Carbonate | Alteration | Unknown | 1 | Unknown | Disseminated |
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.
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.
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
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office