Ontario Geological Survey
Permanent Link to this Record:
MDI31D16NE00043
| Record Name(s) | Bicroft (Centre Lake) - 1981 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Past Producing Mine With Reserves or Resources |
| Date Created | 1981-Oct-01 |
| Date Last Modified | 2022-Apr-26 |
| Created By | |
| Revised By |
Primary Commodities: Uranium
Secondary Commodities: Thorium
Township or Area: Cardiff
Latitude: 44° 59' 49.74" Longitude: -78° 2' 5.54"
UTM Zone: 17 Easting: 733709.055 Northing: 4986911.575 UTM Datum: NAD83
Resident Geologist District: Southern Ontario
NTS Grid: 31D16NE, 31E01SE
Point Location Description: Precise, shaft symbol just S of property symbol 4, WNW of Cardiff.
Location Method: Conversion from MDI
1952: G.W. Burns discovered main deposits. Work was done by Centre Lake Uranium Mines Limited, renamed Bicroft Uranium Mines Limited (1955), renamed Macassa Gold Mines Limited (1963). 1953-54: Adit, trenching, diamond drilling; Number 1 shaft (234 feet) in N1/2 lot 27, concession XI. 1955-63: Number 2 shaft (1843 feet) in lot 28, concession XI; 1000 t.p.d. mill; production as of November 12, 1956 continuous to 1963. 1963: Operations terminated. Mill capacity reached 1375 t.p.d., 104 surface holes totalling 48,363 feet. Underground development included 79,392 feet of drifts, 63,108 feet of crosscuts, and 3882 drill holes totalling 523,775 feet. September, October 1958, small pilot plant produced several commercial thorium compounds. 1975: Nine diamond-drill holes for 3606 feet by Kerr Addison Mines Limited.
| Rock Type | Rank | Composition | Texture | Relationship | Syenite | 1 | Syenite Pgmt | Contains |
|---|---|---|---|---|
| Pegmatite | 2 | Contains |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Allanite | Economic | Ore | ||||
| 2 | Betafite | Economic | Ore | ||||
| 3 | Fluorite | Economic | Ore | ||||
| 4 | Molybdenite | Economic | Ore | ||||
| 5 | Pyrochlore | Economic | Ore | ||||
| 6 | Pyrite | Economic | Ore | ||||
| 7 | Pyrrhotite | Economic | Ore | ||||
| 8 | Titanite | Economic | Ore | ||||
| 9 | Uraninite | Economic | Ore | ||||
| 10 | Uranothorite | Economic | Ore | ||||
| 11 | Zircon | Economic | Ore |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Bicroft Centre Lake | 1960 | Unclassified | 559000 | MRD 1967 DEMR Ottawa MR12 | Uranium .1 Percent |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1981 | 2600000 |
Uranium Percent |
MDI, Uranium Commodity Handout December 2006 | UNCLASSIFIED BUT EXISTING, .09% U3O8, 1.72% per ton. |
Publication - Canadian deposits of uranium and thorium; Geological Survey of Canada, Economic Geology Series 16
Publication Number: Econ Geol 16 Page: 179-182 Date: 1962
Author: Lang, A H; Griffith, J W; Steacy, H R
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102450
Publication - Catalogue of Canadian minerals; Geological Survey of Canada, Paper 80-18
Publication Number: Paper 80-18 Page: 47, 89, 102 Date: 1980
Author: Traill, R J
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/119519
Part - Radioactive mineral occurrences in the Bancroft area
Publication Number: ARV65-06 Page: 30-36 Date: 1998
Author: Satterly J., Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Geology of Cardiff and Faraday townships
Publication Number: ARV66-03 Page: 58-60 Date: 1998
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Uranium and thorium deposits of southern Ontario
Publication Number: MDC004 Page: 16-17 Date: 1967
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - A catalogue of the Ontario localities represented by the mineral collection of the Royal Ontario Museum
Publication Number: MP070 Page: 23,82,153,205 Date: 1977
Author: Satterly J.
Publisher Name: Ontario Geological Survey
Location:
Mono - Uranium and thorium deposits of southern Ontario
Publication Number: OFR5311 Page: 66-67 Date: 1981
Author: Gordon J.B., Rybak U.C., Robertson J.A.
Publisher Name: Ontario Geological Survey
Location:
Mono - Granitic pegmatites of the Bancroft area, southeastern Ontario
Publication Number: OFR5717 Page: 112 Date: 1990
Author: Goad B.E.
Publisher Name: Ontario Geological Survey
Location:
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