Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52O07SE00005

Record: MDI52O07SE00005

General

Mineral Record Identification
Record Name(s) Ben Lake Zone #3 - 1984, Caley Lake #4 - 1993
Related Record Type Simple
Record Status Occurrence
Date Created 1990-Nov-29
Date Last Modified 2021-Dec-13
Created By Q Unknown
Revised By Therese Pettigrew

Commodities

Primary Commodities: Gold



Location

Township or Area: Caley Lake Area

Latitude: 51° 15' 24.19"    Longitude: -90° 31' 45.31"

UTM Zone: 15    Easting: 672401.21   Northing: 5681273.77    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 52O07SE

Point Location Description: Trenches and diamond-drill holes.

Location Method: Conversion from MDI

Access Description: This occurrence is located about 31 km southwest of Pickle Lake and 900 m southwest of the creek mouth at the west end of Bancroft Lake (aka Ben Lake) on the south side of the creek. Access to this occurrence is by appropriately equipped aircraft to Bancroft Lake and then a traverse to the occurrence area. Bancroft Lake is very shallow with a soft bottom. It is not recommended that large aircraft land on it.



Exploration History

1959: Hasaga Gold Mines Ltd. optioned a claim block covering this occurrence from B. Ohman and K. Koval. Hasaga performed prospecting, geological mapping, trenching and diamond-drilling on the optioned claim block. 1963: Pickle Crow Gold Mines Ltd. sampled 5 trenches on this occurrence and reported significant gold values. 1982: 493217 Ontario Ltd. did ground mag and EM surveys which covered this occurrence. 1983-84: Moss Resources Ltd. conducted geological mapping, mag, EM, IP, trenching, rock and soil geochemistry surveys which covered this occurrence. This included trenching and sampling and was followed up by a 20 hole, 1522.78 m, diamond-drill program, including 3 DDH totalling 215.8 m on this zone. 1986: Power Explorations Inc. completed a 16 hole, 1430.43 m, diamond-drilling program on a claim block including 2 DDH totalling 76.22 m on this zone.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
52O07SE-021 52O07SE0009 52O07SE0009
52O07SE-20 52O07SE0012 52O07SE0012
2.56297 20000014671 20000014671
52O07SE-15 52O07SE0015 52O07SE0015
2.56234 20000014672 20000014672
2.6405 52O07SE9401 52O07SE9401
52O07SE-14 20000005371 20000005371

Geology

Province: Superior

Subprovince: Uchi

Terrane: North Caribou

Domain: Uchi

Belt: Meen-Dempster

Geological Age: Neoarchean  



Geology Comments

Dec 07, 2005 (B Nelson) - This occurrence is exposed in a series of trenches along an east-trending strike length of about 180 m. The occurrence is hosted in a succession of mafic metavolcanics containing interlayers of iron formation. Quartz porphyry intrusives intrude the area. The gold mineralization is most commonly associated with sulphide-rich quartz stringers and fractures and with sulphide-poor iron formation and the surrounding mafic metavolcanics. Pyrrhotite and pyrite are observed in the trenches.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Vein 1 Quartz Contains
Mafic lava flow-unsubdivided 2 Host
Ironstone-unsubdivided 3 Host
Quartz-Feldspar Porphyry 4 Quartz-Feldspar Porphyry Near

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1PyrrhotiteEconomicOre
2PyriteEconomicOre
3MagnetiteEconomicOre
4LimoniteEconomicOre

Mineralization Comments

Dec 07, 2005 (B Nelson) - The best assay reported from this occurrence was 0.295 oz/ton Au over 46 cm.


May 29, 2020 (Therese Pettigrew) - Gold mineralization occurs in and near the main southern Iron formation band. A series of 11 trenches between lines 8+00W and 2+00W expose a 600-foot long gold-bearing zone. Gold mineralization occurs dominantly in altered banded iron formation but is also associated with altered biotite schist, limonitic quartz veins and mafic tuff. Considerable pyrrhotite and pyrite occur in several of the trenches. Gold mineralization appears to be most commonly associated with iron sulphides in quartz stringers and fractures although in some instances gold occurs in apparently unaltered, sulphide poor Iron formation and the enclosing mafic flows and tuffs. The best gold value of 0.295 oz/ton over 1.5 feet was obtained in the westernmost trench (#3-1). Trenches 3-4 and 3-5 located between lines 6+00W and 7+00W yielded 0.16 oz/ton over 5 feet and 0.102 oz/ton over 1.5 feet respectively. Values In other trenches averaged between 0.01 and 0.04 oz/ton gold (Assessment report 52O07SE0012). DDH BL-86-11 returned up to 0.021 oz/t Au over 1 foot from a mafic flow with 60-70% pyrite. BL-86-2 retuned up to 0.083 oz/t over 4 feet (2.85 g/t Au over 1.22 m) from Zone 3 banded iron formation (Assessment report 52O07SE0009).



Alteration Comments

Dec 07, 2005 (B Nelson) - Not known.




Mineral Record Details

Classification
RankClassification            
1 Lode (Gold)
Characteristics
Rank Characteristic            
1 Vein

References

Map - Cat Lake-Pickle Lake, geological compilation series, Kenora and Thunder Bay districts

Publication Number: M2218 Scale: 1:253,440    Date: 1976

Author: Sage R.P., Breaks F.W., Troup W.R.

Publisher Name: Ontario Division of Mines


MonoMap - Geology of the Cat Lake-Pickle Lake area, districts of Kenora and Thunder Bay

Publication Number: R207 Scale:     Date: 1982

Author: Sage R.P., Breaks F.W.

Publisher Name: Ontario Geological Survey


Map - Precambrian geology, Muskegsagagen-Bancroft lakes area, District of Kenora (Patricia Portion)

Publication Number: M2507 Scale: 1:50,000    Date: 1986

Author: Stott G.M., Wilson A.C.

Publisher Name: Ontario Geological Survey


Mono - Mineral Deposits of the Central Portion of Uchi Subprovince, Volume 1, Meen Lake to Kesagiminnis Lake Portion

Publication Number: OFR5869 Scale:     Date: 1993

Author: Seim G.Wm.

Publisher Name: Ontario Geological Survey


Report an Error

We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.


Terms of Use

Please review our Terms of Use agreement for this data product.


Ministry Contact Information

For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office