Ontario Geological Survey
Permanent Link to this Record:
MDI000000001718
| Record Name(s) | Steepledge Lake - 2009 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 2014-Jun-11 |
| Date Last Modified | 2022-Apr-04 |
| Created By | |
| Revised By |
Primary Commodities: Platinum, Palladium, Copper, Nickel
Secondary Commodities: Cobalt, Rhodium, Gold, Silver
Township or Area: Greenwich Lake Area
Latitude: 48° 46' 18.69" Longitude: -88° 59' 11.09"
UTM Zone: 16 Easting: 354050 Northing: 5403998 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A15SW
Point Location Description: ddh SL10-45
Location Method: Based on Assessment
Access Description: The Steepledge Lake prospect is located approximately 50 km northeast of the city of Thunder Bay. Access is obtained by travelling along Highway 527 to the Shallownest West Road (located approximately 13km north of the Escape Lake Road), then turning south on the Kilometre Six Road, and finally turning east (left) on a branch road 2 km to the south.
2005-10: Airborne and ground geophysical surveys, geological mapping and diamond drilling (53 ddh for 10,671 m) by Magma Metals Ltd. 2011: Magma Metals conducted a ZTEM airborne survey, and drilled 9 DDH totalling 3296.5 and carried out borehole pulse EM and magnetic surveys. 2012: Magma Metals drilled 2 DDH totalling 450 m. Panoramic Resources took over Magma Metals and transferred the Thunder Bay North property into Panoramic PGMs Canada. 2013: Panoramic carried out geological mapping and a soil gas hydrocarbon survey. 2014: Panoramic carried out a cesium vapour ground magnetic survey
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.51177 | 20000007856 | 20000007856 |
| 2.44482 | 20000004558 | 20000004558 |
| 2.44967 | 20000004635 | 20000004635 |
Province: Superior
Subprovince: Quetico
Terrane: Quetico Basin
Geological Age: Archean
Apr 04, 2022 (Therese Pettigrew) - Within the Project area the main rock types are Archean-age granitoid and metasedimentary rocks of the Quetico Terrane, and Mesoproterozoic-age Keweenawan Supergroup mafic to ultramafic intrusive rocks and related intermediate to mafic hybrid intrusive rocks of the Mid-Continent Rift (MCR). The MCR-related intrusive rocks exhibit PGE-Cu-Ni mineralization to some extent. The Current, Escape, and Lone Island Lake North and South intrusions appear to be connected by the diffuse East West Complex which consists of a series of moderately-dipping hybrid sills and dykes that are confined to the Escape Lake Fault Zone which comprises the southernmost part of the Quetico Fault system. The Lone Island Lake South Intrusion is locally mineralized, whereas the Lone Island Lake North Intrusion is not. The 025 Intrusion is located 3 km north-northwest of Current Lake and is the only mineralized intrusion within the Thunder Bay North Complex that is not directly associated with the Quetico Fault Zone and is the only intrusion within the complex where peridotite is exposed in outcrop. To date significant quantities of mineralization have only been identified within the Current and Escape intrusions. The Current deposit is hosted within the Current Intrusion and the Escape HGZ, Ribbon, and Steepledge North, and Steepledge South mineralized zones are hosted by the Escape Intrusion (Kunz et al., 2021).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrrhotite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore |
Jun 11, 2014 (Mark Puumala) - The Steepledge Lake intrusive complex is a Midcontinent Rift-related conduit-type ultramafic intrusion that has a minimum strike length of 2.4 km. Diamond drilling results reported by Magma Metals (Canada) Ltd. include 36.0m of 2.51g/t Pt+Pd, 0.51% Cu, and 0.23% Ni from 34m depth in hole SL09-13.
Apr 04, 2022 (Therese Pettigrew) - The Escape Intrusion has a drill and magnetically-defined strike length of approximately 4.6 km. There are presently three mineralized zones defined within the Escape Intrusion, which are from north to south: Steepledge North; Steepledge South; and the Escape HGZ. The Steepledge North was discovered by Magma Metals (Canada) Limited in late 2008 and consists of a poorly defined, approximately 200 m long, weakly to locally moderately mineralized zone located beneath the central and southern portions of Steepledge Lake. In this area the mineralization and the conduit are similar to that observed within the Current Zone 3 km to the east; however, the grades are much lower, and the conduit is wider and thicker (50 m to 75 m wide and up to 100 m in height). Mineralization is finely disseminated, ranging from a few percent to <5% sulphides (pyrrhotite and chalcopyrite), and is interstitial to gangue minerals. The Steepledge South was discovered in 2010 and comprises a roughly approximately 300 m long, poorly drill-defined, irregular zone that is located within a geologically complex portion of the conduit where it transitions from an elongated, hourglass-shaped tube into complex tabular body. Where drill density allows, it is evident that the intrusion in this area consists of at least two, possibly more, separate conduits that have merged together. Mineralization is observed in multiple levels within the merged conduit. Mineralization is finely disseminated to locally finely stringered pyrrhotite and chalcopyrite, ranging from a few percent to 10 to 15% sulphides, and is interstitial to gangue minerals.
| Rank | Classification |
|---|---|
| 1 | Mafic-Ultramafic Intrusion |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Steepledge North | 2022 | Inferred Mineral Resource | 97464 | 2022 NI 43-101 | 1846 oz Pt, 1578 xo Pd, 169 oz Au, 1805 oz Ag, 15 t Co, 260 t Cu, 204 t Ni contained | Cobalt 149.59 g/t, Copper 0.27 %, Gold 0.05 g/t, Nickel 0.21 %, Palladium 0.5 g/t, Platinum 0.59 g/t, Silver 0.58 g/t |
| Steepledge South | 2022 | Indicated Mineral Resource | 42812 | 2022 NI 43-101 | 1448 oz Pt, 1223 ox Pd, 75 oz Au, 1581 oz Ag, 6 t Co, 119 t Cu, 72 t Ni contained | Cobalt 142.66 g/t, Copper 0.28 %, Gold 0.05 g/t, Nickel 0.17 %, Palladium 0.89 g/t, Platinum 1.05 g/t, Silver 1.15 g/t |
| Steepledge South | 2022 | Inferred Mineral Resource | 1990612 | 2022 NI 43-101 | 57,381 oz Pt, 50,208 oz Pd, 4410 oz Au, 75,364 oz Ag, 353 t Co, 6613 t Cu, 3308 t Ni contained | Cobalt 177.16 g/t, Copper 0.33 %, Gold 0.07 g/t, Nickel 0.17 %, Palladium 0.78 g/t, Platinum 0.9 g/t, Silver 1.18 g/t |
| Steepledge North | 2022 | Indicated Mineral Resource | 124611 | 2022 NI 43-101 | 3379 oz Pt, 2931 oz Pd, 250 oz Au, 5200 oz Ag, 45 oz Rh, 20 t Co, 359 t Cu, 218 t Ni contained | Cobalt 157.85 g/t, Copper 0.29 %, Gold 0.06 g/t, Nickel 0.18 %, Palladium 0.73 g/t, Platinum 0.84 g/t, Rhodium 0.01 g/t, Silver 1.3 g/t |
Publication - NI 43-101 Technical Report and Preliminary Economic Assessment for the Thunder Bay North Project
Publication Number: 2022 NI 43-101 Date: 2022
Author: Kuntz, G., Wissent, B., Boyko, K., Harkonen, H., Jones, L., Muir, W., Buss, B., Peacock, B.
Publisher Name: Nordmin for Clean Air Metals
Location: SEDAR
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office