Ontario Geological Survey
Permanent Link to this Record:
MDI42F05SW00014
| Record Name(s) | Olson Road No.1 Sulphide Occurrence - 9999 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1997-Jan-02 |
| Date Last Modified | 2023-Jun-08 |
| Created By | |
| Revised By |
Primary Commodities: Sulphur/Pyrite
Township or Area: Everest Lake Area
Latitude: 49° 19' 31.57" Longitude: -85° 48' 5.21"
UTM Zone: 16 Easting: 587091.764 Northing: 5464324.759 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42F05SW
Point Location Description: Road side outcrop
Location Method: Data Compilation
Access Description: The Olson Road No. 1 sulphide occurrence is located approximately 23.2 km north of Manitouwadge and 7.7 km northeast of Everest Lake. The occurrence is accessible via motor vehicle. From Manitouwadge, travel east and then north along the Camp 70 logging road for approximately 31.5 km to the Jim Lake road. Proceed north along the Jim Lake road for approximately 7.85 km to the Husak road. Proceed west along the Husak road for approximately 13.8 km to the Olson road. Proceed north along the Olson road for approximately 5.2 km. Sulphide mineralization occurs within a flat-lying outcrop adjacent to the road along its west side (Williams and Breaks 1990, Open File Map 142).
1954-1964: The area surrounding and including the occurrence was staked several times by various parties, but no work was recorded for assessment credit. 1965: Geological mapping; M.E. Coates (ODM). 1978-1979: Regional lake sediment and water geochemical survey; GSC-MNR. Samples collected from lakes in the vicinity of the occurrence contained slightly anomalous amounts of base metals. 1989: Geological mapping; H. Williams and F. Breaks (OGS). Dighem airborne geophysical survey (EM, MAG, VLF-EM); Noranda Exploration Company, Limited and Noranda Minerals Inc. (Geco Division). Lithogeochemical sampling; M. Smyk (OGS). 1991-1992: Reconnaissance till sampling survey; GSC. Samples collected in the vicinity of the occurrence contained slightly anomalous amounts of Au and base metals.
Province: Superior
Subprovince: Quetico
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: Amphibolite
Dec 07, 2005 (D McKay) - The Olson Road No. 1 sulphide occurrence is located within the Quetico Subprovince approximately 5.5 km north of the Quetico-Wawa subprovince boundary (Williams and Breaks 1990). The rocks in the vicinity of the occurrence are moderately to locally strongly foliated (090 degrees/subvertical). Mineral assemblages indicate the rocks have experienced granulite facies-grade regional metamorphism (Williams and Breaks 1990). An east-trending, regional scale, linear topographic feature, referred to as the Little Nama Lake lineament, lies approximately 2.5 km south of the occurrence (Coates 1968, Map 2141). A northwest-trending fault lies approximately 1.25 km west of the occurrence (Coates 1968, Map 2141; Williams and Breaks 1990). The occurrence is underlain primarily by an east-trending sequence of migmatitic paragneiss (Coates 1968, Map 2141; Williams and Breaks 1990; Resident Geologist's files, Schreiber-Hemlo District, Thunder Bay). Intrusion of granitic, tonalitic and pegmatitic material into the paragneiss has resulted in the development of localized lit-par-lit and agmatitic structures. Refolded minor folds in the paragneiss indicate multiple episodes of deformation have occurred. The paragneiss is generally light tan- to rusty-weathering, speckled black and white, medium- to coarse-grained, moderately foliated, non-magnetic and crudely laminated. The paragneiss is composed primarily of biotite, quartz and feldspar. Coarse-grained porphyroblasts of purple garnet and rare, dark brown orthopyroxene occur locally. Sulphide mineralization occurs locally within the paragneiss.
| Rock Type | Rank | Composition | Texture | Relationship | Paragneiss | 1 | Opx-Gnt-Bio-Q-Fel Paragneiss | Migmatitic | Host |
|---|
Dec 07, 2005 (D McKay) - The paragneiss is generally light tan- to rusty-weathering, speckled black and white, medium- to coarse-grained, moderately foliated, non-magnetic and crudely laminated. The paragneiss is composed primarily of biotite, quartz and feldspar. Coarse-grained porphyroblasts of purple garnet and rare, dark brown orthopyroxene occur locally.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore |
Dec 07, 2005 (D McKay) - In his report for the area, Smyk (Schnieders et al. 1990, p.150) stated: Within migmatitic and gneissic rocks of the Quetico Subprovince, immediately north of the Manitouwadge synform and the Quetico-Wabigoon boundary, several pyrite occurrences have been investigated. They are apparently widely distributed in the area accessed by the Husak and Olson roads between Everest and Pearly lakes. The mineralization consists of fine-grained, disseminated to Coarse-grained euhedral pyrite +/- quartz in biotitic metasedimentary migmatite, regionally striking at 095 degrees. Migmatitic tonalites and diorites, and pegmatite are intercalated with the metasediments, commonly developing a lit-par-lit structure. The mineralized zones, developing 15 to 30 cm wide gossans, are parallel to local schistosity and/or gneissosity and are persistent on an outcrop scale. A grab sample of gossanous, coarse-grained, biotite-rich schist collected from the occurrence by M. Smyk in 1989 returned assay values of nil Au, nil Ag, 530 ppm Cu and 26 ppm Zn (Schnieders et al. 1990, p.150; Resident Geologist's files, Schreiber-Hemlo District, Thunder Bay). Several similar sulphide occurrences are located in the surrounding area. The economic potential of these occurrences is limited by their small size, erratic distribution and low metal content.
| Rank | Classification |
|---|---|
| 1 | Unknown |
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
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 Date: 1994
Author: McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Article - Schreiber-Hemlo Resident Geologist's District - 1989
Publication Number: MP147.007 Page: 139-159 Date: 1997
Author: Schnieders B.R., Smyk M.C.
Publisher Name: Ontario Geological Survey
Location:
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office