Ontario Geological Survey
Permanent Link to this Record:
MDI42F06SW00002
| Record Name(s) | Sperle Sulphide Occurrence - 1977, Snakepit Sulphide Occurrence - 1991, Foche River Project - 1984 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1997-Jan-02 |
| Date Last Modified | 2022-May-06 |
| Created By | |
| Revised By |
Primary Commodities: Gold, Copper
Secondary Commodities: Sulphur/Pyrite
Township or Area: Flanders Lake Area
Latitude: 49° 17' 16.18" Longitude: -85° 28' 22.32"
UTM Zone: 16 Easting: 611051.36 Northing: 5460575.09 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42F06SW
Point Location Description: Small pit
Location Method: Field Visit with GPS
Access Description: The Sperle sulphide occurrence is located approximately 31.5 km northeast of Manitouwadge and 2.5 km northeast of Mooseskull Lake. The occurrence is situated on level ground approximately 150 m northeast of a small unnamed lake. The occurrence is accessible via motor vehicle followed by travel on foot. From Manitouwadge, travel east and then north along the Camp 70 logging road for approximately 23 km to the Mooseskull road. Proceed northeast along the Mooseskull road for approximately 9.5 km to the Osawin East road. Proceed northeast along the Osawin East road for approximately 2.5 km to the intersection with an unnamed tertiary logging road. Proceed east along this unnamed road for approximately 1.9 km to the intersection with a partially grown-in quaternary logging road. Proceed south along this road for approximately 810 m to the vicinity of the occurrence. Sulphide mineralization is exposed in a small pit located approximately 17 m west of the road.
1977: Mattagami Lake Mines Limited : Lithogeochemical sampling.1983: Golden Harvest Resources Limited - property examination .1983-84: North American Mining Exploration Val D-Or Ltd.- Airborne geophysical survey (HLEM, VLF-EM, MAG).
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.4561 | 42F07SW0003 | 42F07SW0003 |
| 2.7961 | 42F06SW0005 | 42F06SW0005 |
| 2.6757 | 42F07SW0002 | 42F07SW0002 |
Province: Superior
Subprovince: Quetico
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: Granulite
Apr 30, 2014 (D McKay) - The Sperle sulphide occurrence is located within the Quetico Subprovince approximately 4.5 km north of the Quetico-Wawa subprovince boundary.
| Rock Type | Rank | Composition | Texture | Relationship | Paragneiss | 1 | Biotite-Quartz-Feldspar Paragneiss | Migmatitic | Near |
|---|---|---|---|---|
| Ironstone-unsubdivided | 2 | Quartz-Rich | Host | |
| Pegmatite | 3 | Near |
Apr 30, 2014 (D McKay) - The occurrence consists of sulphides hosted primarily within moderately magnetic, locally very quartz-rich, banded (on a cm scale) iron formation. The iron formation can be traced along strike for approximately 3 m and is at least 1 m wide. The iron formation strikes approximately 290ºand dips 60º to the north. The occurrence is underlain primarily by an east-trending sequence of locally schistose, migmatitic paragneiss. The paragneiss is typically light tan- to rusty-weathering, speckled black and white, coarse-grained, moderately foliated, and crudely laminated. The paragneiss is composed primarily of varying amounts of biotite, quartz and feldspar. Intrusion of granitic, tonalitic and pegmatitic material into the paragneiss has resulted in the development of localized lit-par-lit structures. In the vicinity of the occurrence, several small, isolated, amphibole- and biotite-rich 'lenses' of relatively mafic rock occur within the paragneiss. These 'lenses' probably represent a highly deformed and metamorphosed iron formation. The Sperle sulphide occurrence is hosted in one of these 'lenses'.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrrhotite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Ore |
Dec 07, 2005 (D McKay) - The sulphides appear to be confined to a 50 cm wide, quartz-rich zone within the iron formation. The predominant sulphide present is pyrrhotite. Pyrite and chalcopyrite occur locally in trace amounts. The sulphides occur as medium- to coarse-grained, disseminated subhedral grains and as variably sized (up to 2 cm across), irregularly shaped, often platy, angular to subangular aggregates localized within fractures and along silicate mineral grain boundaries. Examination of polished slabs indicate the sulphides locally replace the silicates within the iron formation. The sulphides generally constitute 3 to 5% of the iron formation but local concentrations of up to 25% occur. Grab samples collected from the occurrence by prospector K. Sperle in 1977 returned assay values of up to 0.002 ounce Au/ton, 1.5 ppm Ag, 405 ppm Cu, 1750 ppm Zn and 211 ppm Ni. Grab samples collected from the occurrence in 1977 by J. Hinzer for Mattagami Lake Mines Limited returned assay values of up to 0.02% Zn and 0.08% Cu. Grab samples collected from the occurrence in 1991 by D.B. McKay for the OGS returned assay values which varied from nil to 0.028 ounce Au/ton, nil to trace Ag, 108 to 850 ppm Cu, 19 to 58 ppm Zn, 68 to 167 ppm Ni, 12 to 104 ppm Cr, <10 ppb Pt and Pd and <10 ppm Pb.
| Rank | Classification |
|---|---|
| 1 | Exhalative |
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
| 2 | Stratabound |
Map - Geology of the Manitouwadge-Hornepayne area
Publication Number: OFM0142 Scale: 1:50,000 Date: 1990
Author: Williams H.R., Breaks F.W.
Publisher Name: Ontario Geological Survey
Location:
Mono - Mineral Occurrences in the Manitouwadge Area, Volumes 1, 2 and 3
Publication Number: OFR5906 Page: 501-507 Date: 1994
Author: McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Thunder Bay office
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGO
Map - Granitehill Lake area, Thunder Bay and Algoma districts
Publication Number: M2219 Scale: 1:63,360 Date: 1972
Author: Giguere J.F.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Property Submission
Publication Number: Min Dep Date: 1977
Author: J. Hinzer
Publisher Name:
Location: Thunder Bay RGO
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Property Submission, Fields Lake Area
Publication Number: Min Dep Date: 1977
Author: J. Hinzer
Publisher Name:
Location: Thunder Bay RGO
MonoMap - Geology of the Granitehill Lake area, districts of Algoma and Thunder Bay
Publication Number: R095 Date: 1972
Author: Giguere J.F.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
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