Ontario Geological Survey
Permanent Link to this Record:
MDI42D16SW00019
| Record Name(s) | Gustafson Occurrence - 1949, Tb 1985 - 1985, TB 1986 Port Munroe Occurrence - 1986, Potvin Occurrence - 9999, Johnson Property - 9999 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1985-Jun-05 |
| Date Last Modified | 2023-Aug-16 |
| Created By | |
| Revised By |
Primary Commodities: Niobium, Cerium, Thorium, Uranium, Rare Earth Elements
Secondary Commodities: Zinc, Gallium
Township or Area: McCoy
Latitude: 48° 46' 45.18" Longitude: -86° 26' 14.85"
UTM Zone: 16 Easting: 541327.14 Northing: 5403065.4 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D16SW
Point Location Description: SHOWINGS (OCCURRENCE)
Location Method: Conversion from MDI
Access Description: Seeley Lake area, 20 km north of Port Munro, McCoy Township approximately 1.5 km west of Highway 17. Access is via Highway 17 and the showings are along the Canadian Pacific Railway tracks near Port Munro .
1949: Occurrence was discovered by T. Gustafson. Stripping, trenching and sampling were completed. 1954: T. Gustafson reacquired the claims and all interest was transferred to H. E. Martin. Further trenching and sampling was completed. 1959 to 1967: Restaked by numerous people. 1976: O. Hicks staked the occurrence and optioned it to Gulf Minerals Canada Ltd. No work was reported. 1987: P. Moses restaked the claims. 2011: Rare Earth Metals Inc. flew high-resolution helicopter-borne aeromagnetic and spectrometric surveys and conducted prospecting in the area.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.52211 | 20000007299 | 20000007299 |
| 2.52277 | 20000007578 | 20000007578 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Geological Age: Archean
Dec 07, 2005 (R Degagne) - Pye (1954) gave the following account of this occurrence: The columbium deposits are columbium bearing syenite dikes cutting basic intrusives intimately associated with the laurvikite and red syenites. These dikes are found in numerous localities. They are generally fine-grained, five feet or less in average width, and are radioactive in that they give readings of 2 to 3 times background on the geiger-counter. In general, such radioactivity indicates the presence of small amounts of columbium, and assays giving up to 1% combined U3O8 and Cb2O5 have been reported from numerous occurrences by several prospectors who have staked ground in the area. The best showing was staked by Thor Gustafson in 1949, and work on this occurrence led to the rush this year. The showing occurs on claims TB 49939 and 52039 along the railway just west of Port Munro. It is a syenite dike, from 5 to 20 feet in width, in a fine-grained basic intrusive, and has been traced 1500 feet in an eastwest direction. The dip varies from 85 degreesN to vertical. The dike rock is pink and fine-grained, and contains numerous irregular cracks which are filled by a coarse-grained green pyroxene, and where this pyroxene is most abundant the best grade material has been found. This radio-activity is such as to give readings anywhere from 30 to 60 times background throughout the length of the dike. Assays of grab samples indicate up to 1.35% Cb2O5, 0.08% U3O8, 3.00% ThO2, and 12% cerium. It is also reported that gallium (Ga) may also be present.
| Rock Type | Rank | Composition | Texture | Relationship | Syenite | 1 | Syenite | Host |
|---|
Dec 07, 2005 (R Degagne) - Pye (1954) gave the following account of this occurrence: The columbium deposits are columbium bearing syenite dikes cutting basic intrusives intimately associated with the laurvikite and red syenites. These dikes are found in numerous localities. They are generally fine-grained, five feet or less in average width, and are radioactive in that they give readings of 2 to 3 times background on the geiger-counter. In general, such radioactivity indicates the presence of small amounts of columbium, and assays giving up to 1% combined U3O8 and Cb2O5 have been reported from numerous occurrences by several prospectors who have staked ground in the area. The best showing was staked by Thor Gustafson in 1949, and work on this occurrence led to the rush this year. The showing occurs on claims TB 49939 and 52039 along the railway just west of Port Munro. It is a syenite dike, from 5 to 20 feet in width, in a fine-grained basic intrusive, and has been traced 1500 feet in an eastwest direction. The dip varies from 85 degreesN to vertical. The dike rock is pink and fine-grained, and contains numerous irregular cracks which are filled by a coarse-grained green pyroxene, and where this pyroxene is most abundant the best grade material has been found. This radio-activity is such as to give readings anywhere from 30 to 60 times background throughout the length of the dike. Assays of grab samples indicate up to 1.35% Cb2O5, 0.08% U3O8, 3.00% ThO2, and 12% cerium. It is also reported that gallium (Ga) may also be present.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyroxene | Economic | Ore |
Dec 07, 2005 (R Degagne) - CHEMICAL ANALYSIS: Analyses of two grab samples collected by the Resident Geologist's office personnel in 1977 and reported in Fenwick and Scott (1977) were as follows: 0.42 and 1.0 pound U3O8; 0.92 and 1.27% Cb2O5; and 0.45% and 0.5% Ce, respectively. The first sample also assayed 0.45% zinc. The following results are SAMPLE NUMBERS at location on picket line, width (feet) and percent (Cb205). Sample 1 at 0 + 00, 4.0 feet 1.56 Percent (Cb2O5). Sample 2 at 2 + 25E, 5.0 feet 1.27 Percent (Cb2O5). Sample 3 at 5 + 00E, 6.5 feet 1.17 Percent (Cb2O5). Sample 4 at 5 + 30E, 3.0 feet 1.13 Percent (Cb2O5). Sample 5 at 9 + 00E, grab 0.29 Percent (Cb2O5). Samples taken by T. Gustafson, results reported by Eric Nelson, Port Arthur. (Resident Geologist's Files, Schreiber-Hemlo District, Thunder Bay) The dike rock is pink and fine-grained, and contains numerous irregular cracks which are filled by a coarse-grained green pyroxene, and where this pyroxene is most abundant the best grade material has been found. This radio-activity is such as to give readings anywhere from 30 to 60 times background throughout the length of the dike. Assays of grab samples indicate up to 1.35% Cb2O5, 0.08% U3O8, 3.00% ThO2, and 12% cerium. It is also reported that gallium (Ga) may also be present.
| Rank | Classification |
|---|---|
| 1 | Magmatic |
| Rank | Characteristic |
|---|---|
| 1 | Discordant |
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Irregular | 457 | 4 |
Date: Dec 18, 1996
Geologist: R Degagne
Notes: Visited in August 1991 by P. Hinz and R.M. Landry (OGS OFR 5889, 1994)
Book - Canadian deposits of uranium and thorium; Geological Survey of Canada, Economic Geology Series 16
Publication Number: GSC EconGeol 16 Page: 120 Date: 1952
Author: Lang, A.H.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102450
Map - Manitouwadge-Wawa sheet, geological compilation series, Algoma, Cochrane, Sudbury and Thunder Bay districts
Publication Number: M2220 Scale: 1:253,440 Date: 1972
Author: Milne V.G., Giblin P.E., Bennett G., Thurston P.C., Wolfe W.J., Giguere J.F., Leahy E.J., Rupert R.J.
Publisher Name: Ontario Division of Mines
Location:
Publication - Niobium (Columbium) Deposits of Canada; Geological Survey of Canada, Economic Geology Series 18
Publication Number: EconGeol 18 Page: 96 Date: 1958
Author: Rowe, R.B.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102452
Mono - Uranium and thorium deposits of northern Ontario
Publication Number: MDC009 Page: 90 Date: 1968
Author: Robertson J.A.
Publisher Name: Ontario Dept. of Mines
Location:
Article - 1977 report of North Central Regional Geologist
Publication Number: MP078.004 Page: 41 Date: 1997
Author: Fenwick K.G., Scott J.F.
Publisher Name: Ontario Geological Survey
Location:
Mono - Uranium and thorium deposits of northern Ontario
Publication Number: MDC025 Page: 131 Date: 1984
Author: Robertson J.A., Gould K.L.
Publisher Name: Ontario Geological Survey
Location:
Mono - Industrial Mineral Occurrences and Deposits in Northwest Ontario
Publication Number: OFR5889 Page: 71-74 Date: 1994
Author: Hinz P., Landry R.M.
Publisher Name: Ontario Geological Survey
Location:
Book - Property Visit Report, Port Munroe Area (unpublished)
Publication Number: Date: 1954
Author: Pye, E. G.
Publisher Name:
Location: Thunder Bay RGP
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