Ontario Geological Survey
Permanent Link to this Record:
MDI52N04SE00023
| Record Name(s) | Adams Lake Showing - 1956, Cordoba Mines - 1956 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-12 |
| Date Last Modified | 2022-Aug-30 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Balmer
Latitude: 51° 5' 50.7" Longitude: -93° 39' 46.5"
UTM Zone: 15 Easting: 453581 Northing: 5660867 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N04SE
Point Location Description: Pits and trenches in AMIS, DDHs at north end of Adams Lake on OGS map P1976A
Location Method: AMIS Site Visit
Pre-1954: Property held by 8 separate mining companies who performed surface work and drilled at least 70 drill holes totalling over 8400 m. 1954: C. Petersen and H. Pokholm drilled 3 holes totalling 98.8 m. 1955: Completed 8 drill holes totalling 280.6 m. 1956-1960: Cordoba Mines Ltd. performed an airborne magnetometer survey and drilled over 100 holes, no footage given. 1969-1983: Property was split up with 8 to 9 companies performing work. In this period at least 49 holes were drilled totalling over 6300 m, and several EM and magnetometer surveys were performed over various parts of the property. 1996: Adaco Resources Ltd. carried out line cutting, IP and magnetic surveys, sampling, and drilled 1 DDH totalling 157.6 m. 1999-2000: Royal Roads Corp. conducted an IP survey, and carried out prospecting and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.7616 | 52N04SE0002 | 52N04SE0002 |
| 2.17920 | 52N04NE2001 | 52N04NE2001 |
| 13 | 52N04SE0118 | 52N04SE0118 |
| 43 | 52N04SE0096 | 52N04SE0096 |
| 2.20371 | 52N04SE2007 | 52N04SE2007 |
| 2.20614 | 52N04SE2010 | 52N04SE2010 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: Amphibolite
Dec 07, 2005 (K R Kettles) - The Cordoba Property is primarily underlain by altered metavolcanic flows which strike NNW-SSE and dip steeply SW. Sulphide-bearing iron formation beds occur as interflow units. The iron formation units vary in thickness from a few metres up to a maximum of about 150 m, and some of the units have been traced for a strike length of over 3500 m. Locally, the iron formation units are contorted and brecciated, with quartz-carbonate and massive sulphide (generally pyrrhotite) veins filling fractures. Numerous mafic to felsic dikes have been observed on the property. Mineralization occurs in the highly altered mafic metavolcanics. Most of the EM and magnetometer anomalies have been recognized as iron formation units.
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | pillowed | Adjacent |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Highly Altered | Host | |
| Sulphide Ironstone | 3 | Sulphide-Carbonate Rich | Interflows | Near |
Dec 07, 2005 (K R Kettles) - The iron formation units, which are interflow units in the mafic metavolcanics, are from a few metres to 150 m thick. They are locally contorted and brecciated, with quartz-carbonate and massive sulphide veins filling fractures.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Gold | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Carbonate | Economic | Gangue |
Dec 07, 2005 (K R Kettles) - Gold mineralization occurs in narrow sulphide stringers in highly altered mafic volcanic rocks. The 'discovery trench' returned an assay of 2.76 opt Au/1.5m. The best assays obtained from drill core samples are as follows: ddh#19 - 0.08 opt Au/1.5m; 2.76 opt Au/1.5 m; ddh#22- 0.18 opt Au/1.5 m; ddh#26 - 1.04 opt Au/1.5 m; 0.20 opt Au/1.5 m; 0.05 opt Au/1.5 m; ddh#60 - 0.17 opt Au/0.75 m.
Aug 30, 2022 (Therese Pettigrew) - Samples from the main trench returned assays of up to 1450 ppb Au from massive pyrrhotite and pyrite with magnetite (Assessment report 52N04SE2010).
File - Red Lake Resident Geologists Files 1958 Balmer #42
Publication Number: AF RL 1958 Date: 1958
Author: Wolofsky, L.
Publisher Name:
Location: Red Lake RGP
Map - Geological series, Balmer Township, District of Kenora (Patricia Portion)
Publication Number: P1976A Scale: 1:12,000 Date: 1978
Author: Pirie J., Grant A.
Publisher Name: Ontario Geological Survey
Location:
File - Red Lake Resident Geologists Files 1983 Balmer #107
Publication Number: AF RL 1983 Date: 1983
Author:
Publisher Name:
Location: Red Lake RGP
Mono - Gold occurrences, prospects, and deposits of the Red Lake area, volumes 1 and 2
Publication Number: OFR5558 Page: 208-209 Date: 1987
Author: Durocher M.E., Burchell P.S., Andrews A.J.
Publisher Name: Ontario Geological Survey
Location:
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