Ontario Geological Survey
Permanent Link to this Record:
MDI42E03NW00014
| Record Name(s) | Dickison Lake Pyrite Occurrence - 1991, Spine Creek - 9999 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1991-Apr-01 |
| Date Last Modified | 2022-May-09 |
| Created By | |
| Revised By |
Primary Commodities: Sulphur/Pyrite
Secondary Commodities: Gold
Township or Area: Dickison Lake Area
Latitude: 49° 11' 15.22" Longitude: -87° 22' 36.06"
UTM Zone: 16 Easting: 472551.995 Northing: 5448374.629 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42E03NW
Point Location Description: Sheared outcrop
Location Method: Field Visit
Access Description: The occurrences are located about 1200 m north of the midpoint of Dickison Lake, approximately 60 km northeast of Terrace Bay. Dickison Lake is accessible by logging road from Terrace Bay or directly by aircraft from Thunder Bay or Pays Plat.
1928: Area was staked but no work was recorded. 1931: Prospecting and staking; Canada Gold ventures Syndicate. 1954: Geological investigation; M.W. Bartley for the C.P.R. 1970: Geological mapping; M. 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) - Carter (1975, p.23) described the Dickison Lake pyrite occurrence as follows: These occurrences are associated with narrow shears in granite and migmatite. The Spine Creek deposit is in a shear on the north wall of the Gravel River-Kamuck River Fault.
| Rock Type | Rank | Composition | Texture | Relationship | Granite | 1 | Sheared, Locally Mylonitized | Host |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| Chlorite | Alteration | Unknown | 1 | ||||
| Hematite | Alteration | Unknown | 2 |
Dec 07, 2005 (D McKay) - Carter (1975, p.23) described the mineralogy as follows: The pyrite is in cubes up to ? inch (1.3 cm) across in fault gouge and very fine-grained chloritized rock material in the shear. About ? mile (0.8 km) southeast of this occurrence, at either end of an unnamed lake, pyrite is on shear planes in mylonized granite reddened with hematite. The pyrite occurs as cubes ? inch (0.6 cm) across in the granite, and the pyrite content is about 2 percent. Several samples of a silicified, highly strained, mylonized granite were sampled from the Spine Lake area by OGS Resident Geologist staff. Numerous pyrite occurrences are present on Carter's map (Map 2293). Bartley (1954) also show up to 5 sulphide occurrences in this area. Low gold values have been reported 5 km to the southwest along the Kamuck River/Gravel River fault. Grab samples of highly deformed and altered granitic and metasedimentary rocks collected from the area in 1984 by OGS Resident Geologist staff returned assay results of up to <0.01 opt Au and <0.10 opt Ag. Many of these samples contained up to 5% pyrite.
Dec 07, 2005 (D McKay) - Carter (1975) states: The pyrite is in cubes up to ? inch (1.3 cm) across in fault gouge and very fine-grained chloritized rock material in the shear. About ? mile (0.8 km) southeast of this occurrence, at either end of an unnamed lake, pyrite is on shear planes in mylonized granite reddened with hematite.
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
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