Ontario Geological Survey
Permanent Link to this Record:
MDI41I05NE00009
| Record Name(s) | Agnew Lake Mine - 1966, Canadian Thorium Corporation Ltd. Property - 1965 |
|---|---|
| Related Record Type | Compound |
| Related Record(s) | |
| Record Status | Past Producing Mine With Reserves or Resources |
| Date Created | 1985-May-30 |
| Date Last Modified | 2023-Jun-19 |
| Created By | |
| Revised By |
Primary Commodities: Uranium
Secondary Commodities: Thorium, Yttrium
Township or Area: Hyman
Latitude: 46° 25' 57.85" Longitude: -81° 37' 29.65"
UTM Zone: 17 Easting: 451991 Northing: 5142319 UTM Datum: NAD83
Resident Geologist District: Sudbury
NTS Grid: 41I05NE
Point Location Description: shaft
Location Method: AMIS Site Visit
Access Description: Starting at Nairn Centre at highway 17, follow Spanish River Road, drive 8.2km northeastwards to level crossing at Turbine; turn west onto High Falls road, drive 2.8km northwest.
1954-55: New Thurbois Mines Ltd. carried out 90 diamond drill holes totaling 32,902 ft. 1956: Canadian Thorium Corporation Ltd. acquired the property, completed mapping and ground geophysics. 1965-67: Quebec Mattagami Minerals and Kerr Addison Mines Ltd. continued property development, mapping, DD-21,400 ft. 1967-83: Agnew Lake Mines Limited acquired the property; property development and mining took place. Between 1974 and 1975 experimental bacteria leaching of a stockpile was tested; leaching continued for period 1981-83. 1983: Mine closed. 2005-2006: Ursa Major Minerals Inc. carried out 3 diamond drill holes totaling 472m, overburden stripping, assaying and analyses. 2007: Nyah Resources Inc. carried out 7 diamond drill holes totaling 1,432m, assaying and analyses. 2016-2017: Skead Holdings Ltd. carried out drill core resamping from Nyah Resources Inc. drill program in 2007, assaying and analyses. 2017: Skead Holdings Inc. carried out a ground geophysical survey (magnetometer, VLFEM). 2018: Skead Holdings Inc. carried out drill core relogging, resampling, assaying and analyses.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| Hyman-0033-A1 | 41I05NE0058 | 41I05NE0058 |
| Hyman-0031-C1 | 41I05NE0060 | 41I05NE0060 |
| Hyman-0034-A1 | 41I05NE0067 | 41I05NE0067 |
| Hyman-0032-A1 | 41I05NE0072 | 41I05NE0072 |
| Hyman-SP015 / 2.33980 | 20000001904 | 20000001904 |
| Hyman-SP032 / 2.58057 | 20000015438 | 20000015438 |
| Hyman-SP028 / 2.58050 | 20000015023 | 20000015023 |
| Hyman-0015 | 41I05NE0050 | 41I05NE0050 |
Province: Southern
Geological Age: Paleoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Quartz Arenite | 1 | Adjacent |
|---|---|---|---|---|
| Conglomerate | 2 | Mississaugi Formation | Host |
Oct 22, 2010 (A Wilson) - Mineralization is hosted in the Mississagi quartz-pebble conglomerate interbedded with sericitic argillite and quartzite. These rocks unconformably overlie Archean granite basement. The sedimentary rocks are east-trending and have a steep dip to the south.
Sep 30, 2020 (Sheree Hinz) - In the immediate mine area three main rocks facies include the northern granitic rocks, the southern sediments and local gabbroic intrusions. The granite rocks adjacent to the uraniferous quartzites to the south are part of the Birch Lake Batholith. They are typically a pinkish colored medium to coarse grained textured rock. The rocks of this area lie on the northern limb of a major isoclinal syncline. The axis of this structure is situated approximately 800 meters south of the granite contact. Small scale folding encountered during mine work indicates and shallow 15 degree plunge on drag folds. Faulting is common as steeply inclined and can be normal or reverse in nature and a main fault called the 900 fault dips 45 degrees north and offsets in a thrust movement.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Uranothorite | Economic | Ore | ||||
| 2 | Monazite | Economic | Ore | ||||
| 3 | Uraninite | Economic | Ore | ||||
| 5 | Pyrrhotite | Economic | Ore | ||||
| 4 | Pyrite | Economic | Gangue |
Oct 22, 2010 (A Wilson) - Four ore zones were identified. The average true width of the ore zones is 9.2 feet.
Sep 30, 2020 (Sheree Hinz) - The pebble beds are composed principally of quartzite pebbles in a quartz-sericite matrix with varying amounts of pyrite and pyrrhotite. Uranothorite, monazite, and uraninite have been identified as at least some of the uranium- and thorium-bearing minerals. In 1977, the mine produced 70,000 lbs of U3O8 from bioleaching using Acidithiobacillus ferrooxidans (A. ferrooxidans). The leach solution contained, in addition to uranium, substantial amounts of thorium, lanthanum, yttrium, cerium, gladolinium, dysprosium, erbium, ytterbium; but none of the Agnew Lake rare earths were being recovered in 1977.
| Rank | Classification |
|---|---|
| 1 | Paleoplacer |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Agnew Lake | 1980 | Unclassified | 5264393 | MRC025 p. 106 | Proven and probable | Uranium 16 oz/T |
| Agnew Lake | 1967 | Unclassified | 9463751 | Quebec Mattagami Minerals annual report 1967 (drill indicated) | 10,432,000 tons averaging 1.54 lb/t U3O8 for a total of 16,022,000 pounds U3O8. | Uranium 24.64 oz/T |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1985 | 646 |
Uranium 1424924 Pounds |
AMIS report 05308 | A total of 1,424,924 lbs U was reportedly recovered from the mine between 1977-80 |
Map - Hyman and Drury townships, Sudbury District
Publication Number: M2055 Scale: 1:31,680 Date: 1997
Author: Card K.D.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Canadian Minerals Yearbook 1977, Canada, Mineral Report 27E
Publication Number: CMR 27E Page: 374 Date: 1979
Author:
Publisher Name: Energy, Mines and Resources Canada
Location: https://doi.org/10.4095/247706
Map - Hyman Township, District of Sudbury
Publication Number: P0133 Scale: 1:15,840 Date: 1997
Author: Card K.D.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario
Publication Number: GSC OF 1087 Date: 1985
Author: Rose, D.G
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
Mono - Uranium and thorium deposits at the base of the Huronian system in the District of Sudbury
Publication Number: R001 Page: 22-24 Date: 1997
Author: Thomson J.E.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Uranium and thorium deposits of northern Ontario
Publication Number: MDC009 Page: 74-75 Date: 1968
Author: Robertson J.A.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the Sudbury-Manitoulin area, districts of Sudbury and Manitoulin
Publication Number: R166 Page: 210-11 Date: 1978
Author: Card K.D.
Publisher Name: Ontario Geological Survey
Location:
Mono - Uranium and thorium deposits of northern Ontario
Publication Number: MDC025 Page: 106 Date: 1984
Author: Robertson J.A., Gould K.L.
Publisher Name: Ontario Geological Survey
Location:
Folio - Hyman Township, District of Sudbury
Publication Number: GDIF282 Date: 1997
Author: Sudbury RGO
Publisher Name: Ontario Geological Survey
Location: OGS
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