Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52O09SE00006

Record: MDI52O09SE00006

General

Mineral Record Identification
Record Name(s) Crowshore Patricia - 1984, Tarp Lake D - 1984
Related Record Type Simple
Related Record(s)
Record Status Developed Prospect Without Reported Reserves or Resources
Date Created 1984-Jul-23
Date Last Modified 2022-Mar-02
Created By
Revised By

Commodities

Primary Commodities: Gold



Location

Township or Area: McCullagh

Latitude: 51° 31' 25.73"    Longitude: -90° 1' 7.96"

UTM Zone: 15    Easting: 706799   Northing: 5712291    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 52O09SE

Point Location Description: Shaft

Location Method: Field Visit with GPS



Exploration History

1937-1938: Surface exploration and diamond drilling by Crowshore Gold Mines. 1944: Surface exploration by Crowshore Patricia Gold Mines. 1945-1947: Exploration shaft sunk and underground exploration carried out by Crowshore Patricia Gold Mines. 1979-1980: Geophysical surveys by Prospecting Geophysics Ltd. 1981: Diamond drilling by Gallant Gold Mines.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
52O09SE0036A1 52O09SE0141 52O09SE0141
52O09SE0037 52O09SE0128 52O09SE0128

Geology

Province: Superior

Subprovince: Uchi

Terrane: North Caribou

Domain: Uchi

Belt: Pickle Lake

Geological Age: Mesoarchean  



Geology Comments

Dec 21, 2006 (Mark Puumala) - The geololgy of the Pickle Crow area is described in MDI52O09SE00007.




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Mafic lava flow-unsubdivided 1 Basalt Adjacent
Ironstone-unsubdivided 2 Host
Mylonite/Fault Gouge/Pseudotachylite 3 Shear Zone Contains

Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
1TourmalineEconomic And AlterationGangueTourmalinization1
1PyriteEconomicOre
2ChalcopyriteEconomicOre
3PyrrhotiteEconomicOre
4GoldEconomicOre

Mineralization Comments

Dec 21, 2006 (Mark Puumala) - This prospect includes three areas of significant gold mineralization referred to as the A, B, and C Zones by Pye (1976). The mineralized structures are reported by Pye (1976) to generally strike 030, while dipping steeply to the northwest. Lower values of gold mineralization were reported in three other structures on the property referred to as the D, E and G-Zones (Pye 1976). Although no production has been reported from this prospect, an exploration shaft was sunk on the property by Crowshore Patricia Gold Mines in 1945. The A-Zone mineralization is shown on ODM Map P.1009 to be located approximately 250 m southwest of the Crowshore Patricia Shaft. This zone is reported by Pye (1976) to be associated with sulphidized iron formation (pyrite and pyrrhotite) and mineralized quartz stringers that fill transverse fractures. Pye (1976) reports that gold is erratically distributed in the A-Zone, with portions of the structure containing high-grade material (up to 0.74 oz/ton Au over 0.45 m), and others barren of gold. The B-Zone (located approximately 200 m southeast of the shaft on Map P.1009) is a narrow, approximately 730 m long mineralized structure that is indicated by Pye (1976) to be characterized by intense shearing of mafic metavolcanic rocks. This shear is immediately adjacent and parallel to an iron formation unit that hosts the gold mineralization. Mineralization in the B-Zone is reported to include iron formation sulphide replacement (pyrrhotite), and quartz veins in fractured iron formation. Numerous anomalous assay values are reported by Pye (1976) for diamond drilling carried out by Crowshore Patricia Gold Mines in 1947, with the most favourable result being 0.22 oz/ton over 0.97 m in ddh 17. A narrow mineralized shear in mafic metavolcanics approximately 30 m north of the B-Zone was reported by Pye (1976) to contain irregular gold mineralized quartz lenses (up to 0.14 oz/ton over 0.3 m). The C-Zone is located immediately southwest of the shaft, and is reported by Pye (1976) to consist of highly-contorted quartz veins and stringers up to 60 cm wide. The quartz veins are hosted within a shear zone hosted within mafic metavolcanics. The shear zone varies in width from 0.9 to 8.2 m, averaging approximately 2.1 m (Pye 1976). The veins are reported to be mineralized with trace quantities of pyrite, pyrrhotite, chalcopyrite, carbonate and tourmaline, with occasional visible gold. Assay values of up to 2.93 oz/ton Au over 0.9 m were reported from channel samples collected from this zone by Crowshore Patricia Gold Mines in 1944 (Pye 1976).



Mineral Record Details

Classification
RankClassification            
1 Lode (Gold)
2 Replacement
3 Vein
Characteristics
Rank Characteristic            
1 Sheared

References

Map - Geological series, Crow River area, District of Kenora (Patricia Portion)

Publication Number: P1009 Scale: 1:12,000    Date: 1997

Author: Pye E.G.

Publisher Name: Ontario Division of Mines

Location:


Part - The Crow River area

Publication Number: ARV47-03.001 Page: 50-51  Date: 1997

Author: Thomson J.E.

Publisher Name: Ontario Dept. of Mines

Location:


Part - Mines of Ontario in 1946

Publication Number: ARV56-02 Page: 26-27  Date: 1997

Author: Tower W.O., Smith R.L., Bawden W.E., Cooper D.F., Walkom L.K., Little E.S., Kirk A.T., Weir E.B., Douglass D.P., Ward J.L., Barrett C.M.

Publisher Name: Ontario Dept. of Mines

Location:


Mono - Gold deposits of Ontario, part 1, districts of Algoma, Cochrane, Kenora, Rainy River, and Thunder Bay

Publication Number: MDC013 Page: 226  Date: 1971

Author: Ferguson S.A., Groen H.A., Haynes R.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:


Mono - Geology of the Crow River area, District of Kenora (Patricia Portion)

Publication Number: OFR5152 Date: 1976

Author: Pye E.G.

Publisher Name: Ontario Division of Mines

Location:


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