Ontario Geological Survey
Permanent Link to this Record:
MDI000000001915
| Record Name(s) | Frazer Creek - 1982 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2016-Apr-20 |
| Date Last Modified | 2022-Apr-22 |
| Created By | |
| Revised By |
Primary Commodities: Uranium
Secondary Commodities: Nickel
Township or Area: Purdom
Latitude: 49° 12' 53.33" Longitude: -88° 25' 37.24"
UTM Zone: 16 Easting: 396076 Northing: 5452316.01 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52H01NW
Point Location Description: Sample 137770 in AFRO 2.38719
Location Method: Based on Assessment
1982: Uranerz Exploration and Mining Ltd. conducted linecutting, VLF-EM and magnetometer surveys, prospecting, geological mapping, stream, lake and soil geochemistry, stripping, and blasting. 2007: RPT Uranium Corp. conducted trench stripping and drilled 34 DDH totaling 2759.08 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.38719 | 20000003445 | 20000003445 |
| 2.5090 | 52H01NW9210 | 52H01NW9210 |
| 63.4151 | 52H07SW0001 | 52H07SW0001 |
Province: Superior
Subprovince: Quetico
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Terrigenous-Clastic-Unsubdivided | 1 | Host |
|---|---|---|---|---|
| Schist-Unsubdivided | 2 | Migmatititic Biotite Schist | Host | |
| Granite | 3 | Biotite Granite | Adjacent |
Apr 20, 2016 (Therese Pettigrew) - Archean lithologies on the property consist primarily of roughly east to west striking, north dipping metagreywacke, migmatitic biotite schist and lesser biotite granite. The trenches are metagreywacke rocks generally striking east to west (Assessment report 20000003445).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pitchblende | Economic | Ore | ||||
| 2 | Uranophane | Economic | Ore | ||||
| 1 | Biotite | Economic | Gangue | ||||
| 2 | Muscovite | Economic | Gangue | ||||
| 3 | Quartz | Economic | Gangue | ||||
| 4 | Feldspar | Economic | Gangue | ||||
| Hematite | Alteration | Hematization | 1 | Strong | Disseminated | ||
| Chlorite | Alteration | Chloritic | 2 | Strong | Disseminated |
Apr 20, 2016 (Therese Pettigrew) - The showing that was trenched by Uranerz on the Frazer Creek grid was made up of metasedimentary rocks, named biotite-muscovite-quartz-feldspar schist and had background radiometric readings of 200 c/s. The highest radioactive readings found on the Frazer Creek trench area was 10 000 c/s. The metasediments had a strong foliation trending east-west and no major structures were noted. However, hematization was recognized in both the metasediments and the coarse-grained granitic rocks seen to the south of the grid area. The radioactivity was associated with the hematization and was described as sporadic and the high values as being isolated portions. All radioactivity in the main 2007 trench is to the east of a north-south trending fault, which was seen to have dextral movement along it. There are a few small sheared zones to the west of the fault, none of which had any associated radioactivity. The trench samples from the 2007 program ranged from 14000-21000 cps and 252-14862 ppm U3O8 (averaging 5192 ppm U3O8). The 2007 diamond drilling program on the Frazer Creek property consisted of 34 drill holes totaling 2759.08 meters. Holes FC-07-01 to FC-07-29 tested the highest radioactive surface showings in the main trench in a tight network of holes drilled at various angles from 50 to 90 degrees. Hole FC-07-30 and FC-07-31 were drilled into the brecciated and strongly hematized NNW trending arm of the main trench and holes FC-07-32 to FC-07-34 were drilled into one of the northern trenches. Holes FC-07-01 to FC-07-29 were drilled in a tight network or crisscross pattern in the main trench to the east of the main fault mapped. All drill holes intersected metagreywake that was well foliated and fractured. Fracturing was associated with red hematite alteration and blocky core. Small dikes of pink granite and quartz veins were also common among all these drill holes. Two samples were taken from this group of holes and assayed. There were no encouraging results for uranium however sample 211952 taken from hole FC-07-27 contained 1385 ppm Ni. Holes FC-07-30 and FC-07-31 were drilled into the brecciated section of the main trench. Strong hematization was related to the brecciated sections and the fractures seen throughout the drill holes. These two drill holes had the highest radioactive, ranging from 200 to 700 counts per second. Three samples were taken from these holes all with below 10 ppm Uranium. Holes FC-07-32 to FC-07-34 were drilling into the smaller north trench intersecting all metagreywacke with intense to strong hematite altered fractures. No radioactivity found in these three holes (AFRO 2.38719).
Apr 20, 2016 (Therese Pettigrew) - Strong hematite and chlorite alteration mapped around surface radioactive showings is likely a result of fluid flow along the permeable zones created by Black Sturgeon Fault related fracture networks. Mineralization is in places truncated by faults indicating faulting and fracturing occurred both before and after the uranium deposition (Assessment report 20000003445).
Mono - Uranium occurrences of the Thunder Bay-Nipigon-Marathon area
Publication Number: OFR5634 Page: 124 Date: 1987
Author: Scott J.F.
Publisher Name: Ontario Geological Survey
Location:
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