Ontario Geological Survey
Permanent Link to this Record:
MDI42F03SE00002
| Record Name(s) | Olivier Occurrence - 1968 |
|---|---|
| Related Record Type | Simple |
| Record Status | Occurrence |
| Date Created | 1996-Dec-18 |
| Date Last Modified | 2022-Jan-05 |
| Created By | D McKay |
| Revised By | P Bousquet |
Primary Commodities: Gold
Secondary Commodities: Silver, Copper, Zinc
Township or Area: Matthews
Latitude: 49° 2' 16.07" Longitude: -85° 5' 53.21"
UTM Zone: 16 Easting: 639000 Northing: 5433400 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42F03SE
Point Location Description: Cliff side outcrop
Location Method: Field Visit with GPS
Access Description: The Olivier sulphide occurrence is located in Matthews Township approximately 55 km east-southeast of Manitouwadge and 2.25 km southeast of the eastern end of Tocheri Lake. The occurrence is situated along the base of 50 m high, northeast-trending ridge. The occurrence is accessible via motor vehicle to Tocheri Lake followed by travel in boat and then on foot. Alternatively, the occurrence can be accessed via helicopter, although suitable landing areas proximal to the occurrence are scarce.
Pre-1967: M. Olivier - Stripping and blasting.
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: Amphibolite
Apr 30, 2014 (D McKay) - The occurrence is located in the Wawa Subprovince and is situated near the northern tip of a northeast-trending belt (12 km long by 4 km wide) of metamorphosed and strongly deformed mafic meta-volcanic and minor metasedimentary rocks which are surrounded and locally intruded by granitic gneisses of the Black-Pic batholithic complex.
| Rock Type | Rank | Composition | Texture | Relationship | Gneiss-Unsubdivided | 1 | Quartz-Feldsapar-Biotite | Host |
|---|
Apr 30, 2014 (D McKay) - Mineral assemblages suggest the metavolcanic rocks have experienced upper amphibolite facies-grade regional metamorphism. A regional-scale, northwest-trending diabase dike is located approximately 2 km southwest of the occurrence. The occurrence is underlain primarily by strongly foliated (210º/subvertical), locally migmatitic quartz-feldspar-hornblende gneiss and schist and is located along the base of a very steep-sided, possibly fault bounded, northeast-trending ridge.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Ore |
Dec 03, 2018 (D McKay) - The sulphides occur as disseminated grains, narrow (1 to 3 mm wide), foliation-parallel laminae and fracture fillings usually in association with quartz. A grab sample collected from the occurrence by J.F. Giguere in 1968 for the ODM returned assay values of 0.01 oz/t Au, 0.31oz/t Ag and trace Cu. Grab samples collected from the occurrence in 1992 by D.B. McKay for the OGS returned assay values which varied from 69 to 916 ppm Cu, 22 to 48 ppm Ni, 33 to 195 ppm Zn, <10 ppm Pb, nil Ag and nil Au. Grab samples of sulphide-bearing amphibolitic gneiss collected from the occurrence in 1993 by prospector P. Moses, and submitted to the Ministry of Northern Development and Mines for analysis, returned assay values of up to 625 ppm Cu and 125 ppm Zn (Resident Geologist's files, Schreiber-Hemlo District, Thunder Bay). No gold nor silver were detected in these samples. The economic potential of the occurrence is limited by its small size, the erratic distribution of the sulphides and the lack of significant gold or base metals (OFR5906).
| Rank | Classification |
|---|---|
| 1 | Hydrothermal |
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
| 2 | Vein |
Map - Granitehill Lake area, districts of Thunder Bay and Algoma
Publication Number: P0473 Scale: 1:63,360 Date: 1997
Author: Giguere J.F.
Publisher Name: Ontario Dept. of Mines
MonoMap - Geology of the Granitehill Lake area, districts of Algoma and Thunder Bay
Publication Number: R095 Scale: Date: 1972
Author: Giguere J.F.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Map - Manitouwadge sheet, districts of Thunder Bay and Algoma, geological compilation series
Publication Number: P0494 Scale: 1:126,720 Date: 1997
Author: Milne V.G.
Publisher Name: Ontario Dept. of Mines
Mono - Mineral Occurrences in the Manitouwadge Area, Volumes 1, 2 and 3
Publication Number: OFR5906 Scale: Date: 1994
Author: McKay D.B.
Publisher Name: Ontario Geological Survey
Map - Manitouwadge-Wawa sheet, geological compilation series, Algoma, Cochrane, Sudbury and Thunder Bay districts
Publication Number: M2220 Scale: 1:253,440 Date: 1972
Author: Milne V.G., Giblin P.E., Bennett G., Thurston P.C., Wolfe W.J., Giguere J.F., Leahy E.J., Rupert R.J.
Publisher Name: Ontario Division of Mines
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
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
Map - Hornepayne sheet, districts of Algoma and Cochrane, Sault Ste. Marie and Sudbury mining divisions, geological compilation series
Publication Number: P0476 Scale: 1:126,720 Date: 1997
Author: Giblin P.E.
Publisher Name: Ontario Dept. of Mines
Map - Precambrian Geology, Dayohessarah Area (North)
Publication Number: P3309 Scale: 1:20,000 Date: 1995
Author: Stott G.M., Mahoney K.L., Zwiers W.G.
Publisher Name: Ontario Geological Survey
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