Ontario Geological Survey
Permanent Link to this Record:
MDI41J07NE00098
| Record Name(s) | Teasdale Lake Zone - 2013, Conecho - 1968 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 1991-Sep-01 |
| Date Last Modified | 2022-Jun-03 |
| Created By | |
| Revised By |
Primary Commodities: Uranium, Rare Earth Elements
Secondary Commodities: Lanthanum, Cerium, Praseodymium, Neodymium, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium, Ytterbium, Lutetium, Hafnium, Yttrium
Township or Area: Buckles
Latitude: 46° 29' 13.71" Longitude: -82° 31' 11.92"
UTM Zone: 17 Easting: 383342.492 Northing: 5149296.897 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 41J07NE
Point Location Description: Precise
Location Method: Conversion from MDI
Access Description: DDH on the north shore of the west end of Teasdale Lake, 200 metres south of the eastern most point of Conecho Point on Quirke Lake.
1953: Airborne mag and scintillometer survey by Technical Mine Consultants Ltd. 1954-55: 20 d.d. holes totalling 13,273 feet located on the northeast shore of Teasdale Lake by Conecho Mines Ltd. 1954-57: Roche Long Lac Gold Mines Ltd. drilled 5 DDH totalling 3246.9 m. 2006: Appia Energy Corp. conducted an airborne EM and magnetic survey. 2007-08: Appia drilled 6 DDH totalling 2650.2 m. 2012: Appia drilled 16 DDH totalling 8124.2 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| Buckles-41 | 41J08NW0100 | 41J08NW0100 |
| Buckles-11 | 41J08NW0045 | 41J08NW0045 |
| 2.54734 | 20000008085 | 20000008085 |
| 2.52626 | 20000007513 | 20000007513 |
| 2.37866 | 20000013503 | 20000013503 |
Province: Southern
Supergroup: Huronian Supergroup
Formation Group: Elliot Lake Group
Geological Age: Paleoproterozoic
Dec 07, 2005 (G Bennett) - Surface exposures show the Middle Mississagi lying on granitic basement north of Quirke Lake. A thick diabase sill intrudes Upper Mississagi quartzite between Quirke and Teasdale Lakes.
Dec 07, 2005 (P Beach) - Uraniferous conglomerate beds of the Mississagi Fm rest on granitic basement and are cut by a Nipissing diabase sill.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Brannerite | Economic | Ore | ||||
| 2 | Uraninite | Economic | Ore | ||||
| 3 | Monazite | Economic | Ore |
Jun 03, 2022 (Therese Pettigrew) - Most of the Matinenda formation is composed of quartzite with occasional interbeds of pebbly quartzite. The quartz-pebble conglomerates that are the important uranium-bearing horizons (“reefs”) are located in the lowermost part of the Matinenda. Although thin uranium-bearing conglomerate horizons may occur anywhere in the lower half of the Matinenda, two major mineralized horizons are specifically recognized as being of economic importance: the Upper Reef (“UR”) and the Lower Reef (“LR”), separated by the Intermediate Quartzite (“IQ”). Although quartzite is not the major host to mineralization, it is not unusual for grades in excess of 250 ppm U and 2,000 ppm TREEs to occur in thin, gritty to pebbly quartzite beds up to 25 cm thick in the hanging wall above the main U-bearing horizons. For example, in hole AEC12-12, a 20 cm thick pebbly-quartzite (“PQ”) bed located 1.35 m above the UR carries 413 ppm U and 6,063 ppm TREEs. Moving upwards and away from the uranium host rocks, these matrix-supported PQ beds become less common and occur farther apart resulting in a gradual lowering of overall (bulk) grades for both U and REEs. These horizons also occur in the footwall section immediately below the main uranium-bearing reefs, and have been accordingly referred to as Hanging Wall Pebbly Quartzite or Footwall Pebbly Quartzite in Appia’s logs. Some quartzite sections contain thin horizons with the pyrite occurring as fine, scattered grains or as continuous mm-scale seams along bedding laminations. In most of the Appia DDHs, the UR is poor to faint, and is a mixture of interbedded pebbly quartzite, conglomerate and minor quartzite. According to MacEachern, it was unrecognized and not assayed in most of the historical Conecho logs, and it is not shown on mine plans covering the eastern areas of the Panel Mine adjacent to the Teasdale Deposit. The assaying of drill core for REE mineralization resulted in Appia’s discovery of REE mineralization in most beds of PQ and in quartzite adjacent to the thin conglomerate beds that comprise the UR. The UR is enriched in TREEs relative to U and the average ratio of TREEs to U is 10.4 : 1. Its average thickness is 4.4 m. The IQ comprises the section immediately overlying the LR, and it is composed of 2-4 m of quartzite with minor PQ and little or no quartz-pebble conglomerate. It averages approximately 2.7 m in thickness and on rare occasions it exceeds 4 m in thickness, however in hole AEC12-13 the IQ is only 52 cm in thickness. This hole is unusual in that it is also characterized by a strongly mineralized siltstone unit underlying the lower reef. These variations may be imposed by bedding-parallel slips (faults) that are difficult to recognize in the core. Because of U and REE enrichment in the PQ horizons, the IQ typically contains between 50 and 200 ppm U (average = 99 ppm) and between 500 and 1,500 ppm TREEs (average = 938 ppm). In the IQ unit, the REE:U ratio averages 9.1 : 1 in the Appia drill holes. In general, the average grade of the IQ increases with higher PQ contents. The LR is the main carrier of uranium, and it is this reef that was exploited in the Elliot Lake uranium mines. Most of the Appia holes intersected a LR ranging in thickness from 1.4 m to 5.4 m, and the average length of the LR in the Teasdale drill holes was 2.95 m. The true thickness of the LR is approximately 2.7 m and it averages 438 ppm U and 1,512 ppm TREEs. DDH Q-07-02 returned 353 ppm U and 2957 ppm total REEs over 7.45 m. DDH AEC12-12 returned 302 ppm U and 1470 ppm TREE over 11.29 m. DDH AEC12-11 returned 267 ppm U and 1782 ppm TREE over 9.89 m. DDH AEC12-16 returned 270 ppm U and 2240 ppm TREE over 10.59 m. Electron Microprobe Analysis work showed that approximately 70% of the Y was contained in U-Th minerals with the balance in monazite (Assessment report 20000008085).
Date: Aug 23, 1999
Geologist: G Bennett
Notes: The ore occurs in a bed 10 feet thick or more, which strikes N67W, and dips 18S. The Quirke Lake thrust, having a strike of N67W, and a dip of 18S, repeats the ore over a width of 1 200 feet. The vertical separation of the thrusted ore is 130 feet on the west side, to 30 feet on the east side of the property.
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Teasdale Zone | 2013 | Inferred Mineral Resource | 38507000 | 2013 NI 43-101 | 3.14 lb/t TREE and 0.474 lb/t U3O8 for 133,175,000 contained lb TREE and 20,115,000 contained lb U3O8 | Cerium 709 ppm, Dysprosium 13.5 ppm, Erbium 5.5 ppm, Europium 1.6 ppm, Gadolinium 24.6 ppm, Hafnium 5.3 ppm, Holmium 2.1 ppm, Lanthanum 401 ppm, Lutetium 0.6 ppm, Neodymium 232 ppm, Praseodymium 69.9 ppm, Samarium 39 ppm, Terbium 3 ppm, Thulium 0.7 ppm, Uranium 215 g/t, Ytterbium 4.4 ppm, Yttrium 56.5 ppm |
| Teasdale Zone | 2013 | Indicated Mineral Resource | 13095000 | 2013 NI 43-101 | 3.30 lb/t TREE and 0.554 lb/t U3O8 for 47,689 contained lbs TREE and 7,995,000 contained lbs U3O8 | Cerium 745 ppm, Dysprosium 14.3 ppm, Erbium 5.8 ppm, Europium 1.7 ppm, Gadolinium 26.2 ppm, Hafnium 5.2 ppm, Holmium 2.3 ppm, Lanthanum 422 ppm, Lutetium 0.7 ppm, Neodymium 247 ppm, Praseodymium 73.8 ppm, Samarium 41.1 ppm, Terbium 3.2 ppm, Thulium 0.8 ppm, Uranium 251 g/t, Ytterbium 4.6 ppm, Yttrium 59.4 ppm |
| Teasdale Zone | 2011 | Indicated Mineral Resource | 3366000 | Assessment report 20000007513 | Limited to the area of influence of the 6 Appia holes drilled in 2007-08. Average thickness 9.76 m, contains 10,852,000 lb TREE and 1,878,000 lb U2O8 | Rare Earth Elements 66 g/t, Uranium 0.506 g/t |
| Teasdale Lake | 2011 | Indicated Mineral Resource | 15785000 | Assessment report 20000007513 | 1.10 lb U3O8/ton giving 19,000,000 lb contained U3O8 | Uranium 499 g/t |
| Teasdale Lake | 2011 | Inferred Mineral Resource | 43545000 | Assessment report 20000007513 | 1.10 lb U3O8/ton giving 52,700,000 lb contained U3O8 | Uranium 499 g/t |
| Teasdale Zone | 2011 | Inferred Mineral Resource | 21217000 | Assessment report 20000007513 | Limited to the area of influence of the 6 Appia holes drilled in 2007-08. Average thickness 7.22 m, contains 85,895,000 lb TREE and 14,379,000 lb U2O8 | Rare Earth Elements 82 g/t, Uranium 279 g/t |
| Conecho | 1983 | Unclassified | 1814370 | MDC025 | 2 million tons @ 1.4 lbs/t U3O8 | Uranium 635 g/t |
Map - Township 144, District of Algoma, Ontario
Publication Number: M2002 Scale: 1:15,840 Date: 1997
Author: Robertson J.A.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Update Report on the Appia Energy Corp. Uranium-Rare Earth Property, Elliot Lake District, North-Central Ontario, Canada
Publication Number: 2013 NI 43-101 Date: 2013
Author: Workman, A., Breede, K., Good, J.
Publisher Name: Watts, Griffis and McOuat for Appia Energy Corp.
Location: SEDAR
MonoMap - Geology of townships 143 and 144
Publication Number: R004 Page: 49 Date: 1997
Author: Robertson J.A.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Uranium and thorium deposits of northern Ontario
Publication Number: MDC009 Page: 33 Date: 1968
Author: Robertson J.A.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Uranium and thorium deposits of northern Ontario
Publication Number: MDC025 Page: 17 Date: 1984
Author: Robertson J.A., Gould K.L.
Publisher Name: Ontario Geological Survey
Location:
Publication - Canadian mineral deposits not being mined in 1989; Department of Energy, Mines and Resources, Canada, Mineral Bulletin MR 223
Publication Number: MR 223 Date: 1989
Author:
Publisher Name: Department of Energy, Mines and Resources
Location:
Book - Canadian deposits of uranium and thorium, Economic Geology Series 16
Publication Number: GSC EconGeol 16 Page: 281 Date: 1962
Author: Lang, A.H.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102450
Publication - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario
Publication Number: GSC OF 1087 Page: 92 Date: 1985
Author: Rose, D.G.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/129999
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