Ministry of Energy, Northern Development and Mines
Permanent Link to this Record: MDI000000002253| Deposit Name(s) | Empire Lake - 2012 |
|---|---|
| Deposit Status | occurrence |
| Date Created | 2019-Jan-28 |
| Date Last Modified | 2019-Jan-28 |
| Created By | T Pettigrew |
| Revised By | T Pettigrew |
Primary Commodities: iron, vanadium
Secondary Commodities: titanium, platinum, palladium, gold
Township or Area: Eagle Lake Area
Latitude: 49° 41' 58.41" Longitude: -90° 13' 21.91"
UTM Zone: 15 Easting: 700262 Northing: 5508930 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52G09NE
Point Location Description: Trench 1 location from map in Assessment file 20000014769
Location Method: data compilation
Access Description: 75 m north of Highway 17 along the Graham Lake Road
1979-80: Beth Canada carried out ground magnetics and VLF surveys and drilled 2 DDH totaling 124 m. 1985: Fred Martinson drilled 6 DDH totaling 880 m. 2001: Valerie Gold Resources Ltd. carried out linecutting and a Total Field Magnetic Survey. 2012-2014: HTX Minerals (now Transition Metals) carried out mapping, prospecting, stripping, and channel sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 10 | 52G09NE0004 | Open |
| 11 | 52G09NE0001 | Open |
| 2.344 | 52G09NE0002 | Open |
| 2.22560 | 52G09NE2001 | Open |
| 52G09NE8168 | 20000005242 | Open |
| 2.55313 | 20000014769 | Open |
Province: Superior
Subprovince: Wabigoon
Intrusion: Roaring River Complex
Geological Age: Archean
01/28/2019 (T Pettigrew) - The property is part of the larger Roaring River Complex (RRC), which is 70 km long and varies from 1-15 km wide. Components of the RRC include diorite through to granodiorite of sanukitoid affinity and were derived from the shallow melting of mantle peridotite (Assessment file 20000014769).
| Rock Type | Rank | Composition | Texture | Relationship |
|---|---|---|---|---|
| mafic intrusive | 1 | gabbro to diorite | host | |
| felsic intrusive | 2 | tonalite | near |
01/28/2019 (T Pettigrew) - Preliminary mapping of the Empire Lake intrusion to be 8.5 km long and up to 3.2 km wide. The country rock is dominated by massive to gneissic tonalite. The Empire Lake Intrusion is comprised of four units: gabbro, hornblende gabbro, diorite, and mineralized ferrogabbro (Assessment file 20000014769).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Habit Description |
|---|---|---|---|---|---|---|---|
| 1 | magnetite | economic | ore | ||||
| 2 | ilmenite | economic | ore | ||||
| 3 | chalcopyrite | economic | ore | ||||
| 4 | pyrite | economic | ore |
01/28/2019 (T Pettigrew) - Transition Metals identified consistent Fe-Ti-V mineralization over a strike length of 1800 m and 50-170 m width in the Main Zone. This horizon is defined by samples containing > 0.1% V2O5 within a ferrogabbro with visible layers and/or veins of magnetite. The mineralized ferrogabbro has coarse grained, layered/banded oxide horizons. Individual oxide rich layers range from 1-10 cm in thickness, comprised of 70-90% magnetite, 10-30% green-black amphibole, 10-20% white-brown plagioclase, and 1-5% pyrrhotite+chalcopyrite. Outside of oxide bands the composition is approximately 30-40% amphibole, 30-40% plagioclase, 20-30% magnetite, 1-5% pyrrhotite+chalcopyrite, 0-5% quartz. Layering in the ferrogabbro trends NE-SW dipping to the SE between 30-70 degrees. Grab samples returned assays of up to 0.55% V2O5, 53.5% Fe2O3 and 4.29% TiO2. Disseminated chalcopyrite and pyrite occur throughout and carry elevated PGEs, up to 367 ppm Pd+Pd+Au. A channel sample in the Main zone returned values of 0.37% V2O5 over 8 m (Assessment file 20000014769).
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