Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52F10NW00025

Record: MDI52F10NW00025

General

Mineral Record Identification
Record Name(s) S.V. 372 - 1913, Larson - 1986
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1986-Aug-22
Date Last Modified 2023-Aug-16
Created By
Revised By

Commodities

Primary Commodities: Gold



Location

Township or Area: Contact Bay Area

Latitude: 49° 42' 47.52"    Longitude: -92° 52' 23.94"

UTM Zone: 15    Easting: 509132.865   Northing: 5506751.406    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52F10NW

Point Location Description: Precise

Location Method: Conversion from MDI

Access Description: The property is accessible by an overgrown trail which branches west and then south from a north-south bush road. The property is immediately south of the Van Horne Township line.



Exploration History

1913: Shaft was sunk to 40 ft. Vein reported to be mineralized with pyrite, chalcopyrite, galena, and sphalerite. 1917: Shaft was sunk to 60 ft. and two mill tests of the ore were made in 1913 and 1914. 1980: Acquired by H. Hodge. 1981-1983: Van Horne Gold Exploration Incorporated conducted geological mapping, sampling, and geophysical surveys over the property. 1987: Van Horne Gold Exploration Incorporated diamond drilled one 296 ft. hole beneath the shaft.


Geology

Province: Superior

Geological Age: Precambrian  



Geology Comments

Jun 25, 2010 (J Bongfelt) - The occurrence is situated within intercalated mafic to intermediate north-facing metavolcanic flows and pyroclastics of the Lower Wabigoon Volcanics. (OFR5723, p.288)




Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Intermediate lava flow-unsubdivided 1 Contains
Vein 2 quartz-iron carbonate Host

Lithology Comments

Jun 25, 2010 (J Bongfelt) - The S.V. 372 Occurrence consists of a deep shaft and 5 trenches (west of the shaft) sunk on a 0.3-0.9 m wide, linear shear zone striking 080º and hosting narrow discontinuous quartz-iron carbonate veins containing <1-2% pyrite and minor hematite. The host rock consists of medium- to fine-grained, gray-green, chloritic, massive, intermediate metavolcanic flows. The sheared wall rock is intensely sericitic, variably pyritic (1-5%), rusty, chloritic, and carbonatized (calcite) with minor iron carbonate. (OFR5723, p.288)




Mineralization

Mineralization and Alteration
Rank Mineral Name Class Economic Mineral Type Alteration Mineral Type Alteration Ranking Alteration Intensity Alteration Style
5ChalcopyriteEconomicOre
10GalenaEconomicOre
15HematiteEconomicOre
20PyriteEconomicOre
25SphaleriteEconomicOre

Mineralization Comments

Jun 25, 2010 (J Bongfelt) - Two grab samples of the sericitic wall rock, taken by the author, that carried 1-2% pyrite assayed 460 ppb gold and 1820 ppb gold. Grab samples from the trenches and dump taken by Van Horne Gold Exploration Incorporated assayed 0.04, 0.18, and 0.02 ounce gold per ton. Van Horne Gold Exploration also diamond drilled one hole beneath the shaft, but intersected minimal amounts of quartz veins with no gold assays. (OFR5723, p.288) Grab sample, taken by J.R. Parker, found in centre of shear in largest of trenches (east end of trench), west of shaft. Assayed 1820 ppb Au (Kenora Property Visit File 52F/10NW00025)



Mineral Record Details

References

Mono - Geology, gold mineralization and property visits in the area investigated by the Dryden-Ignace economic geologist, 1984-1987

Publication Number: OFR5723 Page: 288  Date: 1989

Author: Parker J.R.

Publisher Name: Ontario Geological Survey

Location:


Part - The pre-Cambrian geology of southeastern Ontario

Publication Number: ARV22-02 Page: 228  Date: 1998

Author: Miller W.G., Knight C.W.

Publisher Name: Ontario Bureau of Mines

Location:


Part - Dryden gold area

Publication Number: ARV26.005 Page: 183  Date: 1998

Author: Thomson E.

Publisher Name: Ontario Bureau of Mines

Location:


Compend - Report of activities, 1985, Regional and Resident Geologists

Publication Number: MP128 Page: 37-38  Date: 1986

Author: Kustra C.R.

Publisher Name: Ontario Geological Survey

Location:


Journal - Kenora Property Visit File 52F/10NW00025, Larson / S.V.372 Occurrence, 1985

Publication Number: Date: 2010

Author:

Publisher Name:

Location: Kenora RGP office


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For detailed information regarding this mineral record please contact the Kenora Resident Geologist District Office