Ontario Geological Survey
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MDI42F05SW00016
| Record Name(s) | Lovlien Sulphide Occurrence - 1991, Sverre Lovlien Showing - 9999, Claim Group 77-2 (East) - 9999, Otter Lake Property - 9999 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1997-Jan-02 |
| Date Last Modified | 2022-May-09 |
| Created By | |
| Revised By |
Primary Commodities: Sulphur/Pyrite
Township or Area: Everest Lake Area
Latitude: 49° 18' 7.6" Longitude: -85° 47' 9.8"
UTM Zone: 16 Easting: 588251.788 Northing: 5461749.739 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42F05SW
Point Location Description: Small pit
Location Method: Field Visit
Access Description: The Lovlien sulphide occurrence is located approximately 20 km north of Manitouwadge and 7.5 km east-northeast of Everest Lake. The occurrence is situated on the south shore of the west bay of Otter Lake approximately 1 km west of the Otter Lake sulphide occurrence. 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 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 10.8 km to an unnamed, poorly marked, tertiary logging road. Proceed north along this unnamed road, through a large cut-over area, for approximately 1.5 km to the south shore of Otter Lake. Proceed west along the south shore of Otter Lake for approximately 500 m to the west tip of the lake. Sulphide mineralization is exposed in a small pit located at the base of a steep-sided outcrop adjacent to the south shore of the lake.
1963-1965: Prospecting, trenching, a ground geophysical survey (MAG) and pack-sack diamond drilling; prospector S. Lovlien. The results of this work are not known. 1965: Lithogeochemical sampling; Mining Corporation of Canada Limited. Geological mapping; M.E. Coates (ODM). 1977: Line cutting, soil geochemical sampling, geological mapping, ground geophysical surveys (RADEM and MAG); Noranda Mines Limited (Geco Division). The geophysical surveys indicated that the occurrence is associated with a magnetic, conductive anomaly approximately 15 m wide and 250 m long. 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). 1991-1992: Prospecting, stripping, trenching and lithogeochemical sampling; prospectors G. Goodwin and A. Turner. Lithogeochemical sampling; D.B. McKay (OGS). Reconnaissance till sampling program; GSC. Samples collected in the vicinity of the occurrence contained anomalous amounts of base metals.
Province: Superior
Subprovince: Quetico
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: Granulite
Dec 07, 2005 (D McKay) - The Lovlien sulphide occurrence is located within the Quetico subprovince approximately 2.5 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 (080 degrees/85 degrees S). Mineral assemblages indicate the rocks have experienced upper amphibolite and locally 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 (Coates 1968, Map 2141) is located approximately 50 m north of the occurrence. A northwest-trending fault, which transects Otter Lake, lies approximately 200 m east of the occurrence (Coates 1968, Map 2141; Williams and Breaks 1990). The occurrence is underlain primarily by an east-trending sequence of migmatitic paragneiss and sulphide-rich iron formation. Intrusion of granitic, tonalitic and pegmatitic material into the paragneiss has resulted in the development of localized lit-par-lit structures. Refolded minor folds in the paragneiss indicate multiple episodes of deformation have occurred. A large (200 m wide by 3.5 km long) northeast-trending, coarse-grained, locally porphyritic, diabase dike is located approximately 1 km south of the occurrence (Williams and Breaks 1990). Several smaller northeast- and northwest-trending diabase dikes occur in the vicinity of the occurrence.
| Rock Type | Rank | Composition | Texture | Relationship | Sulphide Ironstone | 1 | Sulphide-Rich If | Host |
|---|---|---|---|---|
| Paragneiss | 2 | Opx-Gnt-Bio-Q-Fel Paragneiss | Migmatitic | Near |
| Diabase | 3 | Diabase Dike | Near |
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 are present locally. The iron formation is rusty-weathering, medium- to coarse-grained, locally sulphide-rich and locally strongly magnetic. Where exposed, the iron formation is at least 0.5 m wide. The iron formation is overlain to the east by Otter Lake and to the west by swampy overburden. Ground geophysical surveys performed by Noranda Mines Limited (Geco Division) in 1977 suggest the iron formation is at least 50 m long and may be a faulted segment of an iron formation exposed on the east side of Otter Lake (Resident Geologist's files, Schreiber-Hemlo District, Thunder Bay).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore |
Dec 07, 2005 (D McKay) - The occurrence consists of semi-massive to disseminated sulphides hosted within a moderately to strongly magnetic quartz-rich iron formation. The iron formation, as exposed in the pit, is at least 0.5 m wide, strikes easterly (085 degrees) and dips steeply south. The iron formation could not be traced along strike, as it is overlain by Otter Lake to the east and swampy overburden to the west. The sulphides consist primarily of coarse-grained, subhedral grains of pyrite and pyrrhotite. Although local concentrations of up to 25% sulphides occur, the sulphides generally constitute 5 to 10% of the of iron formation. Triple junctions in pyrite and numerous, rounded, sulphide-supported quartz clasts suggest the sulphides have undergone recrystallization and remobilization. A thick, rusty gossan has developed on the surface of the pit walls. Similar sulphide occurrences, some copper-bearing, are located in the general vicinity of the Lovlien sulphide occurrence. These include the Little Nama Lake sulphide occurrence located approximately 2 km to the west, and the Otter Lake sulphide occurrence located approximately 1 km to the east. To date, none of these occurrences have been found to contain economic amounts of gold nor base metals. Grab samples collected from the occurrence in 1991 by D.B. McKay for the OGS returned assay values of up to nil Au, nil Ag, 0.0332% Cu and 0.0100% Zn.
| Rank | Classification |
|---|---|
| 1 | Exhalative |
| Rank | Characteristic |
|---|---|
| 1 | Disseminated |
| 2 | Stratabound |
Map - Stevens-Kagiano Lake area, District of Thunder Bay
Publication Number: P0362 Scale: 1:63,360 Date: 1997
Author: Coates M.E.
Publisher Name: Ontario Dept. of Mines
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
Map - Stevens sheet, Thunder Bay District
Publication Number: M2141 Scale: 1:63,360 Date: 1967
Author: Coates M.E.
Publisher Name: Ontario Dept. of Mines
Location:
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Sverre Lovlien Showing
Publication Number: Min Dep Date: 1965
Author: Condon, F.
Publisher Name:
Location: Thunder Bay RGP
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
Location:
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:
MonoMap - Geology of Stevens-Kagiano Lake area, District of Thunder Bay
Publication Number: R068 Date: 1968
Author: Coates M.E.
Publisher Name: Ontario Dept. of Mines
Location:
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