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Ontario Geological Survey
Permanent Link to this Record:
MDI000000001760
| Record Name(s) | Swole Lake Cu-Ni - 2001 |
|---|---|
| Related Record Type | |
| Record Status | Prospect |
| Date Created | 2014-Sep-30 |
| Date Last Modified | 2021-Dec-15 |
| Created By | Therese Pettigrew |
| Revised By | Therese Pettigrew |
Primary Commodities: Copper, Nickel
Secondary Commodities: Platinum Metals
Township or Area: Junior Lake Area
Latitude: 50° 25' 24.54" Longitude: -87° 56' 21.78"
UTM Zone: 16 Easting: 433271 Northing: 5586139 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42L05NW
Point Location Description: Point located from 2001 property report
Location Method: Based on Assessment
Access Description: Approx. 30 km NE of Lake Nipigon and accessed from Armstrong by an all-weather gravel road running east for 100 km, then by logging roads and ATV trails.
Prospectors found very old blasted pits near the showings. No record of these pits was found in the assessment files. 1983: Kerr Addison Miles did reconnaissance exploration in the Summit Lake area consisting of geological mapping and soil sampling. 1999: Inco Ltd. and Ninety Nine Resources conducted initial prospecting, finding anomalous values of Ni, Cu and PGEs.1989: OGS flew airborne EM and total intensity magnetic geophysical surveys over the Tashota-Geraldton-Longlac area. 2001: Berland Resources Ltd. acquired 100% interest in the property from Ninety-Nine Resources in September and commissioned M.P. Lewis Geological Services to carry out geological mapping. Stares Contracting Corporation conducted prospecting at the same time. 2006: Landore Resources Canada Inc. optioned the property from Stares Corp. in June. 2009: Landore undertook a mapping and sampling program. 2010: Landore conducted geological mapping, prospecting and trenching during October. 2011: Landore drilled 10 DDH totalling 1,441 m, 5 of which holes (766 m) targeted the Cu-Ni-PGE deposit.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.22420 | 42L05NW2008 | 42L05NW2008 |
| 2.22389 | 42L05NW2007 | 42L05NW2007 |
| 2.49306 | 20000006844 | 20000006844 |
| 2.50898 | 20000007852 | 20000007852 |
Province: Superior
Subprovince: Wabigoon
Belt: Caribou Lake
Geological Age: Archean
Sep 30, 2014 (Therese Pettigrew) - The intrusion appears to be a small mafic-ultramafic complex, bordered to the west by banded metasediments. The core is comprised of clinopyroxenite and olivine clinopyroxenite, with an outer zone of hornblende gabbro. The olivine clinopyroxenite is strongly altered to actinolite-tremolite+ankerite and is responsible for the mag high. The clinopyroxenite phase is coarser grained and is completely altered to hornblende. The degree and distribution of actinolite alteration is much more variable, with the best Cu-Ni-PGE grades occurring gin the most intensely altered samples. Melanogabbro phases of the clinopyroxenite exhibited pegmatitic patches consisting of elongate hornblende in plagioclase matrix. The hornblende gabbro exhibited a wide range of grain size and also produced pegmatitic pods, exhibiting appinitic textures very similar to the Quetico intrusions (Pettigrew, 2001).
| Rock Type | Rank | Composition | Texture | Relationship | Pyroxenite | 1 | Melanogabbro And Pyroxenite | Host |
|---|---|---|---|---|
| Quartz Arenite | 2 | Quartzite With Minor Amphibolite | Medium-Grained, Sugary Texture | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Gangue | ||||
| 3 | Pyrite | Economic | Gangue |
Sep 30, 2014 (Therese Pettigrew) - The main Cu-Ni-PGE showing occurs in the Swole Lake Intrusion, which consists of clinopyroxenite and hornblende gabbro. Cu-Ni-PGE mineralization occurs in the centre of the intrusion and is hosted by sulphide-rich, strongly actinolite-altered clinopyroxenite, with Cu-Ni grades of up to 0.79% Cu and 0.54% Ni and PGE grades of up to 90 ppb Au, 220 ppb Pt, and 204 ppb Pd. The intrusion has a high Pt:Pd ratio of ~1.2 and a low Cu:Ni ratio of ~0.8 (Pettigrew, 2001). Grid mapping indicates that the mineralized zone is confined to an area 25 m x 110 m (McCrindle, 2001 AFRI 42L05NW2008). Mineralization of disseminated pyrrhotite and chalcopyrite varies from intense (5-10% locally) to very sparse (less than 5%). Both the melanogabbro and pyroxenite have been moderately altered to lower amphibolite grade (Tuomi, 2011 AFRI 20000006844). Five drill holes from the 2011 DDH program targeted a geophysical anomaly on the gabbro. Mineralized intersections included: DDH 0411-305: 1.2 m at 0.98% Ni, 0.70% Cu, 211 ppm Co, 295 ppb Pd, 192 ppb Pt, 192 ppb Au; DDH 0411-310: 1.0 m at 0.22% Ni (Tuomi, 2012, AFRI 20000007852).
Publication - Swole Lake Cu-Ni Property Review
Publication Number: Scale: Date: 2001
Author: Pettigrew, N.
Publisher Name:
Map - Crescent Lake area, Thunder Bay District
Publication Number: M2100 Scale: Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Map - Precambrian Geology of the Caribou Lake Greenstone Belt, Northwestern Ontario
Publication Number: P3613 Scale: 1:50,000 Date: 2009
Author: MacDonald C.A., ter Meer M., Lowe D., Isaac C., Stott G.M.
Publisher Name: Ontario Geological Survey
Map - Geology and Tectonostratigraphic Assemblages, eastern Wabigoon Subprovince, Ontario
Publication Number: P3449 Scale: 1:250,000 Date: 2002
Author: Stott G.M., Davis D.W., Parker J.R., Straub K.H., Tomlinson K.Y.
Publisher Name: Geological Survey of Canada, Ontario Geological Survey
Map - Compilation series, Mojikit Lake sheet, Thunder Bay District
Publication Number: P0267-REV Scale: 1:126,720 Date: 1984
Author: Stott G.M., McConnell C.D., Mason J.K.
Publisher Name: Ontario Geological Survey
Map - Kowkash gold area, District of Thunder Bay
Publication Number: ARM26A Scale: 1:126,720 Date: 1998
Author: Hopkins P.E., Todd E.W.
Publisher Name: Ontario Bureau of Mines
Map - Kowkash gold area, District of Thunder Bay
Publication Number: ARM26A Scale: 1:126,720 Date: 1998
Author: Hopkins P.E., Todd E.W.
Publisher Name: Ontario Bureau of Mines
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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office