Ontario Geological Survey
Permanent Link to this Record:
MDI41J07NE00007
| Record Name(s) | Lacnor Mine - 1956 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Past Producing Mine With Reserves or Resources |
| Date Created | 1991-Sep-01 |
| Date Last Modified | 2022-May-26 |
| Created By | |
| Revised By |
Primary Commodities: Uranium
Township or Area: Gunterman
Latitude: 46° 23' 44.07" Longitude: -82° 36' 30.06"
UTM Zone: 17 Easting: 376353 Northing: 5139257 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 41J07NE
Point Location Description: No 1 Shaft
Location Method: AMIS Site Visit
Access Description: No. 1 Shaft is 1 kilometre south of Sheriff Lake and 500 metres west of northern most narrow section of Dumbell Lake.
1954-56: 19 diamond drill holes totalling 44,179 feet. Up to 1960 closing, total diamond drilling consisted of 123 holes from underground totalling 6112 feeet and 50, 993 feet of test hole drilling from underground.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| GUNTERMAN 0025 | 41J07NE9314 | 41J07NE9314 |
Province: Southern
Subprovince: Cobalt Basin
Supergroup: Huronian Supergroup
Geological Age: Paleoproterozoic
Dec 07, 2012 (P Beach) - The ore bed consists of uraniferous quartz-pebble conglomerate. Two principle beds of conglomerate ore were found. The average thickness of the upper bed is 11 feet and the lower bed 12 feet. They are separated by a 14 foot bed of pebbly quartzite that is radioactive but not of ore grade. The strata strike about N70E and dips 18N. The east west ore width indicated by drilling is approx. 3300 feet. The conglomerate consists of quartz pebbles in a matrix of feldspathic quartzite well mineralized with pyrite (5 - 15 %) and frequently containing a little chalcopyrite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Brannerite | Economic | Ore | ||||
| 2 | Uraninite | Economic | Ore |
Dec 07, 2012 (A Pace) - Production started in 1957, No. 1 (main) 4-compartment shaft to 3,663 feet, No. 2 (service) 4-compartment shaft to 3,380 feet with both shafts joined by haulageway at 2,550 feet horizon, Up to it’s 1960 closing the mine had been developed on 16 levels. During 1963 and 1964 mine waters from the abandeoned Lacnor workings were bled off through Milliken Mine and the dissolved uranium was extracted in the leaching circuit. In 1964 prior to closing the Milliken mine, a raise was driven into the Lacnor workings above the water level
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Lacnor Mine | 1960 | Unclassified | 4719224 | CMH 1960 pg. 187 | Uranium 2.22 Pounds per Ton | |
| Lacnor Mine | 1960 | Probable | 1000000 | CMH 1960 p. 187 | Uranium 2.11 Pounds per Ton |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 1960 | 3113458 |
Uranium 6309000 Pounds |
MDC025 P 25, CMH 1960, pg.187, R057 | 1958 to 1960: 3,432,000 tons milled |
Map - Township 149, Algoma District
Publication Number: M2113 Scale: 1:15,840 Date: 1967
Author: Abraham E.M., Robertson J.A.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Township 149 [Gunterman Township], District of Algoma
Publication Number: P0193 Scale: 1:15,840 Date: 1997
Author: Robertson J.A., Abraham E.M.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Geological compilation series, Blind River-Elliot Lake sheet, districts of Algoma and Sudbury
Publication Number: P0304 Scale: 1:126,720 Date: 1997
Author: Giblin P.E., Leahy E.J., Robertson J.A.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of Township 149 and Township 150, District of Algoma
Publication Number: R057 Page: 87,89,94,113-116 Date: 1968
Author: Robertson J.A.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Sault Ste. Marie-Elliot Lake sheet, geological compilation series, Algoma, Manitoulin and Sudbury districts
Publication Number: M2108 Date: 1967
Author: Giblin P.E., Leahy E.J.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Uranium and thorium deposits of northern Ontario
Publication Number: MDC009 Page: 36-37 Date: 1968
Author: Robertson J.A.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Sault Ste. Marie-Elliot Lake, geological compilation series, Algoma, Manitoulin and Sudbury districts
Publication Number: M2419 Scale: 1:253,440 Date: 1979
Author: Giblin P.E., Leahy E.J.
Publisher Name: Ontario Geological Survey
Location:
Mono - Uranium and thorium deposits of northern Ontario
Publication Number: MDC025 Page: 25 Date: 1984
Author: Robertson J.A., Gould K.L.
Publisher Name: Ontario Geological Survey
Location:
Map - Sault Ste. Marie-Elliot Lake, geological compilation series, Algoma, Manitoulin and Sudbury districts
Publication Number: M2419 Scale: 1:253,440 Date: 1979
Author: Giblin P.E., Leahy E.J.
Publisher Name: Ontario Geological Survey
Location:
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 Sault Ste. Marie Resident Geologist District Office